Journal articles on the topic 'Carbon Negative Construction'
To see the other types of publications on this topic, follow the link: Carbon Negative Construction.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Carbon Negative Construction.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Jami, Tarun, Deepak Rawtani, and Yadendra K. Agrawal. "Hemp concrete: carbon-negative construction." Emerging Materials Research 5, no. 2 (December 2016): 240–47. http://dx.doi.org/10.1680/jemmr.16.00122.
Full text
2
Wang, Fei, Tian Ming Ding, and Wei Hua Song. "Research on Electrical Radiation of Marine Functional Materials Based on Negative Feedback Control System." Applied Mechanics and Materials 513-517 (February 2014): 3170–74. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.3170.
Full textAbstract:
In marine organisms the carbon sink function of shellfish moves in circles. It not only has a great influence on the marine environment, also has the very important significance for the construction of marine ranching to realize the benefits of recycling economy. If the carbon consumption exceeds marine soil and Photosynthesis Carbon input, the marine environment will be subject to different degrees damage, and affect the marine farming production process. Based on this, this paper analyses and studies the shellfish and algae carbon sink function. The first part of this paper introduces shellfish and algae carbon sink regulation function, gives the schematic diagram of carbon cycle, and establishes a column chart through using the preliminary statistical data. The second part establishes the shellfish and algae carbon sink ecological economic system mathematical model in the construction of marine ranching, and gives the adjustment function diagram of ecosystems two coordination function. The third part uses the professional statistical analysis software SAS to draw the shellfish and algae carbon curve of marine ranching construction, which provides theoretical reference for considering the carbon sink function of marine ranching construction.
3
Xu, Ning, He Zhang, Tixin Li, Xiao Ling, and Qian Shen. "How Big Data Affect Urban Low-Carbon Transformation—A Quasi-Natural Experiment from China." International Journal of Environmental Research and Public Health 19, no. 23 (December 6, 2022): 16351. http://dx.doi.org/10.3390/ijerph192316351.
Full textAbstract:
As a new factor of production, data play a key role in driving low-carbon and sustainable development relying on the digital economy. However, previous studies have ignored this point. Based on the panel data of 283 cities in China from 2007 to 2019, we investigated the construction of national big data comprehensive pilot zones (NBDCPZs) in China as a quasi-natural experiment, using the difference-in-differences (DID) model to empirically test the impact of NBDCPZ policies on urban low-carbon transformation. The following conclusions can be drawn: NBDCPZ construction significantly promotes urban low-carbon transformation, and a series of robustness analysis supports this conclusion. NBDCPZ constructions mainly promotes urban low-carbon transformation by stimulating urban green innovation and optimizing the allocation of urban resource elements. Compared with eastern cities, small and medium-sized cities, and resource-based cities, the construction of NBDCPZs can promote the low-carbon transformation of cities in central and western China, large cities, and non-resource-based cities. Further analysis shows that the construction of NBDCPZs can only improve the low-carbon transformation of local cities, with negative spatial spillover effects on the low-carbon transformation of surrounding cities. Therefore, in the future, it is vital to consider the promotion effect of the construction of NBDCPZs on the low-carbon transformation of local cities and prevent its negative impact on the low-carbon transformation of surrounding cities.
4
Du, Qiang, Yanan Dong, Jingtao Li, Yuelin Zhao, and Libiao Bai. "Assessing the Impacts of Carbon Tax and Improved Energy Efficiency on the Construction Industry: Based on CGE Model." Buildings 12, no. 12 (December 17, 2022): 2252. http://dx.doi.org/10.3390/buildings12122252.
Full textAbstract:
The rapid development of energy consumption and carbon emissions in the construction industry poses an enormous and negative challenge for China’s energy and environment. While maintaining moderate economic growth, it is particularly important to realize energy conservation and carbon reduction. Carbon tax policy, a direct tool to reduce carbon emissions, can effectively alleviate the environmental issues caused by construction activities. However, relying solely on a single method is insufficient to handle the complicated circumstances of China’s construction industry. This study explores the influence of carbon tax on the construction industry through adjustments to tax rates via developing a Computable General Equilibrium (CGE) model. Then, it analyzes how the carbon tax affects the economic and environmental variables by designing scenarios for recycling tax revenue and improved energy efficiency. The results indicate that the carbon tax rate of 40 RMB/t-CO2 is the most appropriate. At this tax level, the negative impacts of energy demand and emissions reduction on macroeconomy and construction industry are minimized. It was also determined that carbon tax revenue recycling to households and sectoral investment will realize the “weak double dividend” effect on the construction industry. Furthermore, improving energy efficiency in the construction industry will demonstrate the additional advantages of carbon tax. This study serves as a theoretical foundation for the Chinese government to develop various energy strategies to achieve low-carbon development in the construction industry.
5
Flores, Laura, Gabriela López de Lara, Salvador García-Esparza, Ricardo Flores Lira, and Marcelo V. Videa. "Construction and Characterization of Lead Acid Negative Active Material+Carbon Paste Electrodes." ECS Transactions 36, no. 1 (December 16, 2019): 29–35. http://dx.doi.org/10.1149/1.3660596.
Full text
6
Kuzman, Manja Kitek, Srečko Vratuša, and Petra Grošelj. "Comparison of Different Construction Types for Public Buildings Applying the Analytic Hierarchy Process." Advanced Materials Research 875-877 (February 2014): 910–16. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.910.
Full textAbstract:
Considering the growing importance of energy-efficient building methods, timber construction will play an increasingly important role in the future. In order to determine advantages and disadvantages of using wood as a leading constructional material, different construction types were compared: solid wood, wood-frame, concrete, and brick construction. To quantify the comparisons the analytic hierarchy process (AHP) was applied. AHP enables the inclusion of various parameters, including descriptive ones, in a mathematical model through which the importance of each construction criterion forming part of the system can be calculated in order to provide objective decisions for construction. Analysis revealed that the top ranked criteria in decision-making include embodied energy, construction cost and design. On comparing different construction types the wood-frame construction, which can have very low or negative carbon footprint, was considered as the most suitable option for public building.
7
Klemm, Agnieszka J., and Fernando C. R. Almeida. "Towards more sustainable construction–application of superabsorbent polymers in cementitious matrices with reduced carbon footprint." MATEC Web of Conferences 149 (2018): 01019. http://dx.doi.org/10.1051/matecconf/201814901019.
Full textAbstract:
Construction industry is constantly searching for sustainable innovations to mitigate negative environmental impacts. Ground granulated blast-furnace slag (GGBS) is a well-known supplementary cementitious material which contributes to reduction of energy and CO2 emissions from cement industry. However, its use in cementitious systems leads to materials with high cracking susceptibility due to their greater autogenous shrinkage triggered by self-desiccation processes. This problem is even more pronounced when concrete is exposed to severe dry-hot weather conditions, such as in North Africa. In order to mitigate this negative effect of cracking, internal curing agents in the form of Superabsorbent polymers (SAP) can be successfully used. This approach leads to more durable cement based materials and in turn more sustainable constructions.
8
Li, Mengcheng, Haimeng Liu, Shangkun Yu, Jianshi Wang, Yi Miao, and Chengxin Wang. "Estimating the Decoupling between Net Carbon Emissions and Construction Land and Its Driving Factors: Evidence from Shandong Province, China." International Journal of Environmental Research and Public Health 19, no. 15 (July 22, 2022): 8910. http://dx.doi.org/10.3390/ijerph19158910.
Full textAbstract:
Human activities and land transformation are important factors in the growth of carbon emissions. In recent years, construction land for urban use in China has expanded rapidly. At the same time, carbon emissions in China are among the highest in the world. However, little is known about the relationship between the two factors. This study seeks to estimate the carbon emissions and carbon sequestrations of various types of land based on the land cover data of 137 county-level administrative regions in Shandong Province, China, from 2000 to 2020.The study estimated the carbon emissions for energy consumption using energy consumption data and night-time light images, hence, net carbon emissions. The Tapio decoupling coefficient was used to analyze the decoupling between the net carbon emissions and construction land, and where the model for the decoupling effort was constructed to explore the driving factors of decoupling. The results showed that net carbon emissions in Shandong Province continued to increase, and the areas with high carbon emissions were concentrated primarily in specific districts of the province. The relationship between net carbon emissions and construction land evolved from an expansive negative decoupling type to a strong negative decoupling type. Spatially, most areas in the province featured an expansive negative decoupling, but the areas with a strong negative decoupling have gradually increased. The intensive rate of land use and efficiencies in technological innovation have restrained carbon emissions, and they have contributed to an ideal decoupling situation. Although the intensity of carbon emission and the size of the population have restrained carbon emissions, efforts towards decoupling have faded. The degree of land use has facilitated carbon emissions, and in recent years, efforts have been made to achieve an ideal decoupling. The method of estimation of net carbon emissions devised in this research can lend itself to studies on other regions, and the conclusions provide a reference for China, going forward, to balance urbanization and carbon emissions.
9
Gugutsidze, G., and F. Draškovič. "Reinforcement of timber beams with carbon fibers reinforced plastics." Slovak Journal of Civil Engineering 18, no. 2 (June 1, 2010): 13–18. http://dx.doi.org/10.2478/v10189-010-0006-4.
Full textAbstract:
Reinforcement of timber beams with carbon fibers reinforced plasticsWood is a polymeric material with many valuable features and which also lacks some negative features. In order to keep up with high construction rates and the minimization of negative effects, wood has become one of the most valuable materials in modern engineering. But the use of timber material economically is also an actual problem in order to protect the environment and improve natural surroundings. A panel of scientists is interested in solving these problems and in creating rational structures, where timber can be used efficiently. These constructions are as follows: glue-laminated (gluelam), composed and reinforced wooden constructions. Composed and reinforced wooden constructions are examined less, but according to researches already carried out, it is clear that significant work can be accomplished in creating rational, highly effective and economic timber constructions. The paper deals with research on the formation of composed fiber-reinforced beams (CFRP) made of timber and provide evidence of their effectiveness. The aim of the paper is to investigate cross-bending of CFRP-reinforced gluelaminated timber beams. According to the results we were able to determine the additional effectiveness of reinforcement with CFRP (which depends on the CFRP material's quality, quantity and module of elasticity) on the mechanical features of timber and a whole beam.
10
Waghmare, Ankit, Amisha Tembhare, Akshay Gulhane, and Mrudul Gotmare. "Use of Hemp in Fly Ash Brick." International Journal for Research in Applied Science and Engineering Technology 10, no. 6 (June 30, 2022): 1605–7. http://dx.doi.org/10.22214/ijraset.2022.43817.
Full textAbstract:
Abstract: The construction sector is one of the primary energy consuming sectors and contributes substantial atmospheric emissions. The building and construction sector is responsible for 30% of global energy use and 17% of greenhouse gas emissions. In the past decade the construction community has been looking at sustainability of construction method. The requirement for improved construction method also leads to the search for new construction materials. One feasible material with suitable technical properties based on renewable is hemp fibre concrete or also known as hempcrete..Hempcrete is a Carbon Negative, non toxic, breathable and biodegradable building material made from hemp fibre, lime, fly ash, sand and water. This bio composite material has excellent thermal and acoustic insulation properties. Using renewable plant based biomaterials such as hemp in building material removes carbon dioxide from the atmosphere, hence reducing the carbon footprint of building infrastructure
11
Zhu, Sining, Zhou Zhou, Ran Li, and Wenxing Li. "Impact of High-Speed Rail Construction on the Environmental Sustainability of China’s Three Major Urban Agglomerations." Sustainability 14, no. 5 (February 23, 2022): 2567. http://dx.doi.org/10.3390/su14052567.
Full textAbstract:
Under the background of global warming, it is of great significance to explore how to realize environmentally sustainable development. This paper takes China’s three major urban agglomerations as the research objects: Yangtze River Delta, Beijing–Tianjin–Hebei, and Pearl River Delta. Generally, we use carbon emission efficiency to represent the sustainable development of the environment. Then we use the city-level panel data of the three urban agglomerations from 2006 to 2019 to construct the slacks-based measure integrating data envelopment (SBM-DEA) model for calculating each city’s carbon dioxide emission efficiency. Finally, we construct the spatial difference-in-differences (SDID) model to explore the impact of high-speed rail construction on each urban agglomeration’s carbon dioxide emission efficiency and its internal mechanism. The findings are as follows: (1) On the whole, high-speed rail construction improves urban agglomerations’ carbon dioxide emission efficiency. Meanwhile, it has a positive spatial spillover effect on surrounding areas. (2) In terms of urban agglomerations, high-speed rail construction has significantly promoted carbon emission efficiency in the Beijing–Tianjin–Hebei region. However, it has had negative external effects on the surrounding areas. (3) From the perspective of mechanism analysis, the construction of high-speed rail has promoted manufacturing agglomeration in the Pearl River Delta region and, at the same time, has had a negative impact on the local carbon dioxide emission efficiency. This study has strong policy implications for promoting the sustainable development of the three major urban agglomerations.
12
Sanchez, Daniel L., and Duncan S. Callaway. "Optimal scale of carbon-negative energy facilities." Applied Energy 170 (May 2016): 437–44. http://dx.doi.org/10.1016/j.apenergy.2016.02.134.
Full text
13
Qu, Yongchao, Jian Zhang, Chongyuan Xu, Yichao Gao, Shanwen Zheng, and Meiling Xia. "Analysis of Spatial Carbon Metabolism by ENA: A Case Study of Tongzhou District, Beijing." Land 11, no. 9 (September 15, 2022): 1573. http://dx.doi.org/10.3390/land11091573.
Full textAbstract:
Carbon metabolism research has attracted worldwide attention as an important way to cope with climate change, promote carbon emission reduction, increase carbon sequestration, and support low-carbon city construction. Ecological network analysis (ENA) plays an important role in network analysis and simulation of carbon metabolism. However, current studies largely focus on single elements or local processes while rarely analyzing the spatial coupling between land use and carbon metabolism. Therefore, taking Tongzhou District as an example, based on the data of land use change and energy consumption, this study constructed an analysis framework based on ENA to explore the comprehensive impact of land use changes on carbon metabolism. The results show the following: (1) From 2014 to 2020, the total carbon emissions increased year by year. Carbon emissions of other construction land (OCL) were dominant, while the carbon sequestration capacity of forest land (FL) increased by 236%. The positive carbon metabolic density remained relatively stable, while the negative carbon metabolic density decreased year by year. (2) The negative carbon flow was concentrated in the transfer of other land to OCL, accounting for 40.2% of the total negative “carbon flow.” The positive carbon flow was primarily from the transfer of other land to FL. (3) From 2014 to 2016, the spatial ecological relationships of carbon flow were dominated by exploitation and control. From 2016 to 2018, competition relationships intensified due to the expansion of the field; from 2016 to 2018, exploitation and control relationships, competition relationships, and mutualism relationships increased significantly and were evenly distributed. This study provides decision-making guidance for the subsequent formulation of government carbon emission reduction policies.
14
Mo, Shu, and Ting Wang. "Synergistic Effects of International Oil Price Fluctuations and Carbon Tax Policies on the Energy–Economy–Environment System in China." International Journal of Environmental Research and Public Health 19, no. 21 (October 30, 2022): 14177. http://dx.doi.org/10.3390/ijerph192114177.
Full textAbstract:
Catalyzed by COVID-19 and the Russia–Ukraine conflict, oil prices fluctuate dramatically on the worldwide market. Both international oil price changes and carbon tax policies have a direct impact on energy costs, thus influencing energy security and emission reduction impacts. Therefore, assessing the interaction effects of international oil price variations and carbon tax policies can assist in resolving the competing challenges of energy security and carbon emission reduction. The impact of international oil price fluctuations on China’s energy–economic–environment system under the baseline scenario and carbon taxation scenario is analyzed by constructing a computable general equilibrium model comprising six modules: production, trade, institutions, price, environment, and equilibrium. The findings indicate that, in addition to reducing high-carbon energy consumption and increasing demand for clean electricity, rising international oil prices have a negative effect on real GDP, resulting in lower output in sectors other than construction, and a positive effect on the environmental system by driving carbon emission reductions. In contrast, decreasing international oil prices have the opposite effect. Nevertheless, the impact of rising and decreasing international oil prices is asymmetrical, with the positive shock effect being smaller than the negative. The carbon tax policy can effectively offset the increase in carbon emissions caused by the decline in international oil prices, which is conducive to promoting the development of clean energy, while simultaneously causing an increase in product prices and arousing a contraction in consumer demand, which has a limited negative impact on the macroeconomy.
15
Lu, Na, Shuyi Feng, Ziming Liu, Weidong Wang, Hualiang Lu, and Miao Wang. "The Determinants of Carbon Emissions in the Chinese Construction Industry: A Spatial Analysis." Sustainability 12, no. 4 (February 14, 2020): 1428. http://dx.doi.org/10.3390/su12041428.
Full textAbstract:
As the largest carbon emitter in the world, China is confronted with great challenges of mitigating carbon emissions, especially from its construction industry. Yet, the understanding of carbon emissions in the construction industry remains limited. As one of the first few attempts, this paper contributes to the literature by identifying the determinants of carbon emissions in the Chinese construction industry from the perspective of spatial spillover effects. A panel dataset of 30 provinces or municipalities from 2005 to 2015 was used for the analysis. We found that there is a significant and positive spatial autocorrelation of carbon emissions. The local Moran’s I showed local agglomeration characteristics of H-H (high-high) and L-L (low-low). The indicators of population density, economic growth, energy structure, and industrial structure had either direct or indirect effects on carbon emissions. In particular, we found that low-carbon technology innovation significantly reduces carbon emissions, both in local and neighboring regions. We also found that the industry agglomeration significantly increases carbon emissions in the local regions. Our results imply that the Chinese government can reduce carbon emissions by encouraging low-carbon technology innovations. Meanwhile, our results also highlight the negative environmental impacts of the current policies to promote industry agglomeration.
16
Tsai, Wen-Tien. "Carbon-Negative Policies by Reusing Waste Wood as Material and Energy Resources for Mitigating Greenhouse Gas Emissions in Taiwan." Atmosphere 12, no. 9 (September 17, 2021): 1220. http://dx.doi.org/10.3390/atmos12091220.
Full textAbstract:
Carbon-negative policies for mitigating the emissions of greenhouse gas (GHG) from the energy sector are becoming more urgent and important. Therefore, the environmental policies and regulatory promotion for reusing waste wood as a carbon-negative resource in Taiwan were discussed in this work, which focused on mitigating the emissions of GHG from the energy industries and the manufacturing and construction industries. Considering the official GHG inventory report, the trend analysis of GHG emissions from the energy and the manufacturing and construction industries was addressed first. In addition, this study placed emphasis on the environmental policies and regulatory measures for the material and energy resources from waste wood according to the promulgation of the relevant acts. It was found that the total GHG emissions from the energy and the manufacturing and construction industries accounted for over 80% of net GHG emissions in 2018. In review of the resource recycling and circular economy, lignocellulose-based (or bamboo-based) char, ecological building material, and wood-to-biofuel pathways (e.g., solid recovered fuel) were discussed in this work because they have been promoted by the central competent authorities of the Council of Agriculture (COA), the Ministry of Interior (MOI), and the Environmental Protection Administration (EPA), respectively. In order to achieve the sustainable development goals (SDGs) in Taiwan, carbon-negative policies for reusing waste wood as material and energy resources will play an important role in the mitigation of GHG emissions.
17
Zheng, Kun, Hongbing Deng, Kangni Lyu, Shuang Yang, and Yu Cao. "Market Integration, Industrial Structure, and Carbon Emissions: Evidence from China." Energies 15, no. 24 (December 11, 2022): 9371. http://dx.doi.org/10.3390/en15249371.
Full textAbstract:
Against the backdrop of China’s carbon emission reduction targets and the promotion of the construction of a unified domestic market, what kind of carbon emission effect has market integration had in weakening regional barriers and optimizing resource allocation? This paper adopts a two-way fixed effects analysis based on China’s provincial panel data from 2003 to 2019. It uses a mediation model to explore the relationship between market integration and carbon emissions. Furthermore, industrial rationalization and upgrade are the basis for examining whether a competitive or cooperative relationship exists between the carbon emission effects generated and promoting market integration between regions. The study finds a negative relationship between market integration and carbon emissions. In addition, there is significant heterogeneity in the effect of market integration on carbon emissions, and the influence effect is mainly in central China; industrial rationalization can play an enhanced role in the process of the negative impact of market integration on carbon emissions, further enhancing the negative contribution of market integration to carbon emissions. However, market integration can weaken its negative impact on carbon emissions with the industrial upgrade, and there may still be invisible barriers between regions in promoting market integration barriers.
18
Roy, Dibyendu, Samiran Samanta, Sumit Roy, Andrew Smallbone, and Anthony Paul Roskilly. "Fuel cell integrated carbon negative power generation from biomass." Applied Energy 331 (February 2023): 120449. http://dx.doi.org/10.1016/j.apenergy.2022.120449.
Full text
19
Zeng, Tianyi, Hong Jin, Xu Gang, Zihang Kang, and Jiayi Luan. "County Economy, Population, Construction Land, and Carbon Intensity in a Shrinkage Scenario." Sustainability 14, no. 17 (August 24, 2022): 10523. http://dx.doi.org/10.3390/su141710523.
Full textAbstract:
As the largest ecological background system and basic economic unit in China, counties are of great significance to China’s carbon emission reduction targets. This article conducts theoretical model construction and empirical test research from a contraction perspective, using population and built-up area change as variables and combining indicators of county scale structure in an attempt to find key scale structure elements and representative indicators that affect the carbon emission intensity of counties. By using data from 140 counties in Northeast China during the period of 2015–2020, an empirical study was conducted on population shrinkage clustering, county size structure, and carbon emission intensity. The results show that: (1) population shrinkage significantly increases the carbon intensity of counties, but the contribution of population shrinkage to carbon intensity is scale-heterogeneous, the contribution effect decreases with population size, and the effect on large counties is minimal; (2) population size and industrial structure are the main factors influencing carbon intensity in counties, both have a negative linear elasticity relationship, and GDP per capita is not included in the overall model and is only significant in large counties; (3) the relationship between total construction land and carbon intensity is an inverted U-shaped Kuznets curve, with a critical value of 30 km2, and the total construction land in most counties is below or close to the critical value.
20
Wang, Jie, Xin Hou, Xujie Deng, Huichao Han, and Liuliu Zhang. "Application of BIM in Tunnel Design with Compaction Pile Reinforced Foundation Carrying Carbon Assessment Based on Advanced Dynamo Visual Programming: A Case Study in China." Sustainability 14, no. 23 (December 5, 2022): 16222. http://dx.doi.org/10.3390/su142316222.
Full textAbstract:
Carbon emission assessment in civil engineering has gained worldwide attention due to the negative effects of greenhouse gases on the environment. Significant amounts of building materials and electric power are consumed during the construction of tunnels, causing the release of greenhouse gases into the atmosphere. In addition, building information modeling (BIM) can be utilized to realize the computerized design of tunnels, and improve construction efficiency. However, the traditional BIM software (Autodesk Revit) lacks tunnel components and is unable to directly create a three-dimensional tunnel axis. This paper adopted BIM to build a three-dimensional model of the tunnel components for tunnel and carried out batch parameterization and component lofting based on Dynamo visual programming. The BIM of the tunnel guided the construction procedures and improved the construction efficiency. Based on the emission coefficient method, we calculated the carbon emissions from each component and loaded them into the BIM during the parameterization process. After the tunnel modeling design was completed, a bill of quantities was obtained. Then, the carbon emissions from the whole tunnel construction were calculated according to the bill. Thus, the combination of BIM technology and tunnel engineering was realized; this has practical significance for reductions in emissions, and cleaner construction in relation to tunnel engineering.
21
Wei, Qi, Yuanyuan Bian, and Xuejuan Yang. "Influencing factors of price fluctuation in China’s carbon market." E3S Web of Conferences 218 (2020): 01044. http://dx.doi.org/10.1051/e3sconf/202021801044.
Full textAbstract:
Carbon emission trading is an important countermeasure for countries around the world to cope with the challenge of climate change. Price signals in the carbon market play an important stabilizing role. Therefore, research on the factors affecting carbon price fluctuations is of great significance. Based on this, an empirical study on the fluctuation factors of carbon price in China’s pilot carbon market showed that: gross industrial output, coal consumption and the number of extreme weather have a positive impact on carbon prices, while the technology innovation index has a negative impact on carbon prices. This article puts forward suggestions on the construction of the carbon market, stabilizes carbon prices, and promotes the development of China’s carbon market.
22
Li, Deli, Yingjie Zhai, Gang Tian, and Richard K. Mendako. "Tourism Eco-Efficiency and Influence Factors of Chinese Forest Parks under Carbon Peaking and Carbon Neutrality Target." Sustainability 14, no. 21 (October 27, 2022): 13979. http://dx.doi.org/10.3390/su142113979.
Full textAbstract:
(1) This study aims to solve the problems of sustainable development in the forestry tertiary industry, to address the imbalanced state of natural environmental resources and the forestry industry, to improve ecological and environmental management, and to prepare for carbon peak and carbon neutral goals. (2) Using panel data from forest park tourism in 30 provinces and cities in China from 2010 to 2019, the DEA game cross-efficiency model is adapted to evaluate its tourism eco-efficiency, and the primary factors affecting forestry tourism eco-efficiency are selected; additionally, a panel tobit regression model is established for analysis to find policy entry points for enhancing forestry tourism eco-efficiency through empirical analysis. (3) The results show that transportation network construction and tourism input have a negative impact on the eco-efficiency of forestry tourism in China, while ecological construction, economic level, and environmental regulations are positively correlated with the eco-efficiency of forestry tourism. (4) Therefore, suggestions are made to optimize the allocation of tourism resource inputs and adopt appropriate development models, and to promote the interactive development of forestry industries.
23
Auld, Douglas, and Jeremy Wright. "Carbon Sequestering and Green Roof Technology: A Benefit Cost Analysis." Environmental Management and Sustainable Development 7, no. 1 (January 2, 2018): 85. http://dx.doi.org/10.5296/emsd.v7i1.12396.
Full textAbstract:
The installation of a green roof on residential buildings affords the opportunity to sequester carbon from the atmosphere. The cost of incorporating green roofs in the construction of a family home or modifying an existing home is significant and the private benefits are rather small. Carbon reduction does have a value recognized by all levels of government in Canada. In this paper we calculate the cost of installing a green roof on a two vehicle garage in the Province of Ontario using current building costs. Utilizing data on the private costs and private benefits, the estimated NPV of a green roof over a 35 year period is negative. Once the value of carbon sequestering is introduced in the model, the NPV is positive, suggesting that subsidizing green roof construction is an efficient method in any government’s question to encourage a reduction in GHG emission.
24
Ma, Chunyan, Nan Wang, Yifeng Chen, Santosh Govind Khokarale, Thai Q. Bui, Fredrik Weiland, Torbjörn A. Lestander, Magnus Rudolfsson, Jyri-Pekka Mikkola, and Xiaoyan Ji. "Towards negative carbon emissions: Carbon capture in bio-syngas from gasification by aqueous pentaethylenehexamine." Applied Energy 279 (December 2020): 115877. http://dx.doi.org/10.1016/j.apenergy.2020.115877.
Full text
25
Zod, Nada, Alfonso Mucci, Olivier Bahn, Richard Provençal, and Yixin Shao. "Steel slag-bonded strand board as a carbon-negative building product." Construction and Building Materials 340 (July 2022): 127695. http://dx.doi.org/10.1016/j.conbuildmat.2022.127695.
Full text
26
Sahabuddin, Mohd Firrdhaus Mohd, and Stirling Howieson. "Improving indoor air quality using dynamic insulation and activated carbon in an air permeable ceiling." Building Services Engineering Research and Technology 41, no. 4 (August 21, 2019): 441–53. http://dx.doi.org/10.1177/0143624419872390.
Full textAbstract:
Indoor air pollution has proven negative impacts on the urban population in many developing countries. In Kuala Lumpur, high-rise housing programmes are not addressing IAQ and thermal comfort. As household incomes rise, residents are resorting to retro-fitting wall mounted split, air conditioning units; a strategy that is neither cost nor carbon effective. This paper reports on the results of computer modelling in conjunction with scale model trials (1:5) of a ‘Dynamic-Hybrid Air Permeable Ceiling’ (DHAPC) designed to filter, cool and dehumidify, the incoming air mass. This filter membrane, when combined with activated charcoal, reduced carbon monoxide, sulphur dioxide, benzene and particulate levels by up to 90%. These techniques now require to be replicated at 1:1 scale; however, the initial data suggest that such an approach, could make a major contribution to improving indoor air quality and thermal comfort with a much reduced carbon penalty. Practical application: Air pollution is now being recognised as having major negative impacts on public health. The use of insulation, as a large area and volume air filter, would appear to be a highly effective technique to reduce particulate matter, and when combined with activated charcoal that absorbs/adsorbs toxic gasses, can significantly improve indoor air quality in cities across the world that are presently exceeding WHO air quality guidelines.
27
Ahmeti, Muhamet, and Mimoza Sylejmani. "Negative Impacts (SBS) in residential buildings case studies from Kosovo." International Journal of Business & Technology 6, no. 3 (May 1, 2018): 1–10. http://dx.doi.org/10.33107/ijbte.2018.6.3.18.
Full textAbstract:
This paper presents the negative impacts on residential buildings in Kosovo, - as well as the main factors of the occurrence of sick building syndrome (SBS) in residential buildings in the case of Kosovo. It also examines the impact of different materials on this phenomenon and how many constructions in Kosovo are protected from this phenomenon. For the assessment of the impact of materials on health and the environment, it is necessary to consider all the phases. Starting from the phase of construction, selection of materials, application from the beginning of the use of the building, including all the materials processing from the beginning until their application, the use of natural resources for the production of various construction products, the necessary energy for the production and processing of the materials used, and the amount of release and imitation of CO2 (carbon dioxide). This paper also discusses the question of what sick building syndrome SBS is, how materials are affected by this phenomenon, what are the main materials affecting the residential buildings in SBS phenomenon in Kosovo, what buildings are affected by this phenomenon and how does this phenomenon affect human health. Furthermore, this paper provides a deep analysis on factors influencing the phenomenon of SBS in different municipalities and several companies. It also discusses the influence of Asbestos and its impact on SBS, through a survey conducted in different municipalities and institutions and other companies. Through this discussion the paper attempts to provide information on the current knowledge about asbestos, as well as the manner of its assembling and dismantling, storage and all other information related to this material which has a great impact on the appearance on phenomena of SBS. A special emphasis has been put on the impact of materials on our health, recent research on the materials used and impact on the appearance of SBS case, including the diseases that occur as a consequence of the occurrence of diseased buildings.
28
Ahmed, Kaiser, Hatef Hajian, Tero Hasu, and Jarek Kurnitski. "Kouvola Housing fair NZEB houses energy, cost and carbon analyses." E3S Web of Conferences 172 (2020): 13001. http://dx.doi.org/10.1051/e3sconf/202017213001.
Full textAbstract:
Building energy efficiency, construction cost, life cycle cost, and carbon emission are the best interests of users, owners and different vendors. This study assessed the energy performance (EP) related investment and operational energy cost of Kouvola housing fair NZEB. Data from 12 new detached houses were collected, which fulfilled the energy certificate class of B according to the Finnish nearly zero energy building (NZEB) regulation. Besides, emission from building materials, construction and energy use during 50 years of one model building were estimated, aiming to compare the life cycle emission from wooden building, insulated concrete building, blockhouse and log house. The results showed that the total construction cost was independent to EP-value and even had a slightly negative correlation to the EP-value. The average EP-value of 12 buildings was slightly higher than that of buildings in Tampere housing fair 2012, which showed no improvement of nearly zero energy building (NZEB) guidelines since 2012. Energy performance related cost dependency in specific cost categories was shown so that EP-value improvement by 40 units increased less than 2% of construction cost. Electricity had a significant contribution to CO2 emission while local district heating was based on renewables. Material emissions contribution was 32-48% of total emissions, and wooden buildings showed lower carbon footprint compared to other building structures.
29
Ngieng, Hui Yee, Tony Hadibarata, and Rubiyatno. "Utilization Of Construction And Demolition Waster And Environmental Management Practice In South East Asian Countries." Tropical Aquatic and Soil Pollution 1, no. 1 (June 30, 2021): 46–61. http://dx.doi.org/10.53623/tasp.v1i1.13.
Full textAbstract:
The ASEAN population will increase to 724.8 million by the year 2030 and the urbanization rate increases with years. This leads to the development of the construction industry to fulfil the fundamental social and physical requirements. Construction activities create an adverse negative impact on the environment, such as pollution and damage to the environment. This article will study more about the construction and demolition waste (C&D waste) and it can be founded in various construction stages. Therefore, the government and authorities introduce environmental management practices to mitigate the negative impact on construction on the environment and minimize the pollution at the source. What, why and where are terms required to consider before the implementation of environmental management practice. The government policies of Malaysia, Singapore and Thailand are summarized. Approximately 10% of total synthetic carbon dioxide (CO2) sourced from concrete production. The content more emphasizes the green materials generated from agricultural waste to replace the silica in concrete. The bamboo is used as interior decoration and material for building construction. Green materials technology is solar panel, solar thermal collector, geothermal technology, hydropower technology and cooling roof system.
30
Kryvomaz, Тetiana I., and Antonina M. Savchenko. "The reducing of construction industry influence on climate change by implementation of green building principles." Environmental safety and natural resources 37, no. 1 (April 2, 2021): 55–68. http://dx.doi.org/10.32347/2411-4049.2021.1.55-68.
Full textAbstract:
The construction industry has a significant impact on climate change due to the urbanization increase, as cities consume 75% of the world's natural resources and contribute 80% of global greenhouse gas emissions. At the same time, the construction and the built environment directly depend on a number of climatic factors. Climatic information is used at all stages of the construction project: concept development, technical design, organization and conduct of construction works, operation of buildings and structures, repair and reconstruction, destruction, utilization and recycling. The role of the construction industry in achieving the UN’s Sustainable Development Goals and reducing the impact on climate change through the implementation of green building principles is analyzed. Green building aims to minimize the negative impact on the environment, and innovative green technologies reduce carbon emissions.
31
Li, Li, Zhichao Chen, and Shidong Wang. "Optimization of Spatial Land Use Patterns with Low Carbon Target: A Case Study of Sanmenxia, China." International Journal of Environmental Research and Public Health 19, no. 21 (October 30, 2022): 14178. http://dx.doi.org/10.3390/ijerph192114178.
Full textAbstract:
Land use change is an important factor in atmospheric carbon emissions. Most of the existing studies focus on modeling the land use pattern for a certain period of time in the future and calculating and analyzing carbon emissions. However, few studies have optimized the spatial pattern of land use from the perspective of the impact of carbon emission constraints on land use structure. Therefore, in this study, the effects of land use change on carbon emissions from 1990 to 2020 were modeled using a carbon flow model for Sanmenxia, Henan, China, as an example. Then, the land use carbon emission function under the low carbon target was constructed, and the differential evolution (DE) algorithm was used to obtain the optimized land use quantity structure. Finally, the PLUS model was used to predict the optimal spatial configuration of land use patterns to minimize carbon emissions. The study produced three major results. (1) From 1990 to 2020, the structural change of land use in Sanmenxia mainly occurred between cultivated land, forest land, grassland and construction land. During this period of land use change, the carbon emissions from construction land first increased and then decreased, but despite the decrease, carbon emissions still exceeded carbon sinks, and the carbon metabolism of land use was still far from equilibrium. (2) Between 2010 and 2020, the area of cultivated land began to decrease, and the area of forest land rapidly increased, and land-use-related carbon emissions showed negative growth. This showed that the structural adjustment of energy consumption in Sanmenxia during the period decreased carbon emissions in comparison with the previous period. (3) A comparison of predicted optimized land use patterns with land use patterns in an as-is development scenario showed a decrease in construction land area of 23.05 km2 in 2030 with a steady increase in forest land area and a decrease in total carbon emission of 20.43 t. The newly converted construction land in the optimized land use pattern was concentrated in the ribbon-clustered towns built during urban expansion along the Shaanling basin of the Yellow River and the Mianchi–Yima industrial development area.
32
Roswag-Klinge, E., E. Neumann, and A. Klinge. "Climate impacts of wood/ timber as a building material – investigated on three urban quarters in Germany (CIW)." IOP Conference Series: Earth and Environmental Science 1078, no. 1 (September 1, 2022): 012029. http://dx.doi.org/10.1088/1755-1315/1078/1/012029.
Full textAbstract:
Abstract Due to the current discussion about the shortage of resources and the excess of greenhouse gas emissions, timber construction is experiencing a renaissance in Germany. As a renewable resource, wood can replace emission-intensive building materials and, if left long-term in the construction, lead to negative balances, i.e. carbon sinks at the construction phase (LCA phase A1-A3). This means that more carbon could be stored in the construction than is emitted during production. This study analyses different buildings ranging from row houses to high-rise buildings that are envisioned as envisioned as envisioned as envisioned as envisioned as timber construction of three so called timber-quarters (Holzbauquartiere). For all buildings, the current design/ construction, a conventional as well as a timber+ construction (maximum possible timber use in construction) variant have been evaluated. The calculations were conducted with eLCA the LCA tool of the Bewertungssystem Nachhaltiges Bauen (BNB) (German Green Building System) and the data sets of the German ÖKOBAUDAT[11]. The results are given per m2 gross floor area per user, per building and per neighbourhood. The investigations show the importance of the material choice regarding the climate gas emissions of the buildings and how large the proportion of wood must be in order to design the building envelope (KG 300 (cost group for architectural elements) in a climate gas neutral way. Planning parameters for a climate gas neutral design and construction of buildings are derived from the analysis.
33
Gurvich, Alex, and Germán G. Creamer. "Overallocation and Correction of Carbon Emissions in the Evaluation of Carbon Footprint." Sustainability 13, no. 24 (December 9, 2021): 13613. http://dx.doi.org/10.3390/su132413613.
Full textAbstract:
This paper points to several carbon footprint data distortions that overallocate carbon footprints to individual companies, and to several carbon data intricacies that lead to improved data integrity. Data distortion due to the same company being listed in multiple geographical jurisdictions or through different share classes overstates Emissions Scope 1 by 4.6%, Emissions Scope 2 by 5.5%, Emissions Scope 3 by 10.6% and Reserves by 6.0%. Data distortion due to index construction by having different market capitalization in representative indices overallocates Emissions Scope 1 by 33.9%, Emissions Scope 2 by 27.6%, Emissions Scope 3 by 21.3% and Reserves by 57.2%. A significant amount of carbon data is not precise but is estimated by third-party providers through proprietary techniques. The estimated data for Scope 1 Emissions is 46.4% for the companies in the index. In addition, carbon data is stale, resulting in 94.5% of data being two years old or more. Usage of carbon data in a present format may incorrectly remove some companies from portfolios (negative screen, complete removal) or incorrectly reduce some companies’ weight in a portfolio (partial screen, fractional removal).
34
Fu, Li, Qingmei Chen, and Li Jia. "Carbon dots and gold nanoclusters assisted construction of a ratiometric fluorescent biosensor for detection of Gram-negative bacteria." Food Chemistry 374 (April 2022): 131750. http://dx.doi.org/10.1016/j.foodchem.2021.131750.
Full text
35
Jin, Li, Sun, Zhang, and Zheng. "Factors Controlling Urban and Rural Indirect Carbon Dioxide Emissions in Household Consumption: A Case Study in Beijing." Sustainability 11, no. 23 (November 20, 2019): 6563. http://dx.doi.org/10.3390/su11236563.
Full textAbstract:
Residential carbon dioxide emissions can be divided into a direct component caused by consumers via direct energy usage and an indirect component caused by consumers buying and using products to meet their needs, with a higher proportion caused by the latter. Based on Beijing panel data for 1993–2012, an economic boom period in China, indirect carbon dioxide emissions were separately calculated for urban and rural households using the consumer lifestyle approach (CLA) model. Then, an extended stochastic impact by regression on population, affluence, and technology (STIRPAT) model was used to analyze the influence from two aspects, social economy, and land use, with high precision. Results indicate that indirect CO2 emissions in Beijing households display a rising trend in urban areas but a slight decrease in rural areas. Technology influences and forest land are, respectively, the most important aspects of the social economy and land use. Higher population and urbanization resulted in enhanced emissions in both urban and rural areas. The Engel coefficient presented a negative correlation with indirect CO2 emissions for both rural and urban areas. Compared with urban areas, the per capita net income of rural areas restrained consumption. The consumption structure of urban residents was more biased toward the tertiary industry than that of rural residents. Although technical progress has proceeded, it cannot offset urban residents’ indirect CO2 emissions caused by the large amount and rapid growth of consumption. Regarding land use, urban construction land net primary productivity (NPP) was high and not an important factor contributing to indirect CO2 emissions. Forest and lawn primarily served a recreational function and exhibited a positive impact. Water and cultivated land offered insufficient production and thus had a negative influence. For rural residents, lawn and cultivated land production is self-sufficient. Forests offer a carbon sequence effect, and construction land expansion increased the proportion of developed area, offering a scale effect that resulted in reduced carbon emissions. Based on the results, alternative carbon emission reduction policies have been proposed for each tested influence aspect to reduce emissions, including policies for optimizing industrialization quality, constructing a medium-density city, increasing space efficiency, encouraging sustainable consumption behavior, and increasing the efficiency of energy utilization.
36
ÖZTÜRK KARDOĞAN, Pınar, and Ahmet ERDAĞ. "THE EFFECTS OF CONSTRUCTION WASTE ON CLIMATE CHANGE: IS A MORE GREEN CONSTRUCTION INDUSTRY POSSIBLE?" Mühendislik Bilimleri ve Tasarım Dergisi 10, no. 4 (December 30, 2022): 1222–31. http://dx.doi.org/10.21923/jesd.1058358.
Full textAbstract:
Due to the increasing population, the rapid consumption of natural resources has revealed the necessity of protecting nature from people. Increasing building stock due to population growth has triggered climate change. The energy and natural resources consumed during production in the construction sector have created important environmental problems such as global warming and climate change in the sector. Greenhouse gas emissions caused by construction materials can be considered as one of the main causes of climate change problems and emphasizes the necessity of considering environmental effects. Greenhouse gas is one of the most important factors affecting the ecological environment and climate change, as it is one of the gases with the highest carbon dioxide emission rate. Concrete and steel used in the construction industry are among the materials that have a negative impact on climate change. This study revealed the effects of waste materials used in the construction industry on the problem of climate change and the importance of promoting the efficient use of energy resources for the management of this problem. In addition, this study emphasized the importance of focusing on sustainable structures in order to leave a cleaner and healthier environment for future generations, and that priority should be given to developing environmentally friendly materials.
37
Yang, Zeyu, Zao Li, and Yitian Wang. "Carbon Footprint Analysis of Buildings Based on LCA Theory Under Carbon Neutrality Goals: Taking the 3rd China International Solar Decathlon Competition as an Example." Journal of Architectural Research and Development 7, no. 1 (January 17, 2023): 25–32. http://dx.doi.org/10.26689/jard.v7i1.4697.
Full textAbstract:
This paper focuses on the design of residential buildings oriented to the efficient use of solar energy, and selects the entries HUI HOUSE of Hefei University of Technology and Lille I University of France in the 3rd China International Solar Decathlon China Competition, based on the theory of the life cycle assessment (LCA) of buildings, and analyzes the carbon footprint from four aspects: building materials production and transportation stage, building construction stage, building operation stage, and building demolition stage. Through the calculation of the carbon footprint of buildings, the socio-economic benefits of HUI HOUSE in carbon reduction were analyzed; the result of the calculation was that HUI HOUSE achieved carbon neutrality in the ninth year, and continued carbon reduction after that, contributing a cumulative total of 947.54 tons of carbon negative in the life cycle of buildings.
38
Jiang, Long, Haibing Zheng, Jianbo Xiong, Zhihong Fan, Ting Shen, Hui Xie, Mengzhu Chen, et al. "Fabrication of negative carbon superhydrophobic self-cleaning concrete coating: High added-value utilization of recycled powders." Cement and Concrete Composites 136 (February 2023): 104882. http://dx.doi.org/10.1016/j.cemconcomp.2022.104882.
Full text
39
Taylor, Benjamin, Ning Xiao, Janusz Sikorski, Minloon Yong, Tom Harris, Tim Helme, Andrew Smallbone, Amit Bhave, and Markus Kraft. "Techno-economic assessment of carbon-negative algal biodiesel for transport solutions." Applied Energy 106 (June 2013): 262–74. http://dx.doi.org/10.1016/j.apenergy.2013.01.065.
Full text
40
Jančárik, Vladimír, and Jozef Pal’a. "Influence of lift off on Barkhausen noise parameters of construction steel." Journal of Electrical Engineering 69, no. 6 (December 1, 2018): 474–76. http://dx.doi.org/10.2478/jee-2018-0079.
Full textAbstract:
Abstract The magnetic Barkhausen noise (MBN) measurement technique is a popular magnetic method used for non destructive detection of microstructural changes in ferromagnetic materials. The MBN parameters depend on the gap between the excitation yoke and measured object. To suppress the negative influence of lift off, we tried to find a parameter of the MBN, which could be independent of lift off changing in a practical range. The lift off effect was analysed experimentally on construction steel samples with various levels of carbon content. We found that the amplitude distribution is a promising parameter of MBN in this regard. Measurement results showed that the slope of amplitude distribution was roughly independent of lift off.
41
Kozlova, V. K., V. A. Lotov, Yu S. Sarkisov, V. V. Logvinenko, I. A. Rakhmanova, and E. V. Bozhok. "PROCESSES OF CARBONIZING SHRINKAGE OF CONSTRUCTION MATERIALS." Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture, no. 3 (June 27, 2019): 178–94. http://dx.doi.org/10.31675/1607-1859-2019-21-3-178-194.
Full textAbstract:
Relevance: This paper studies the durability of structures made of various building materials and the effect of carbon dioxide on building materials with a view to reduce its aggressive and destructive effects. Purpose: The aim of the paper is to identify and eliminate the causes of the building material destruction during their carbonization. Materials/Methods: Silicate brick, cement stone and concrete. Research findings: Research is carried out into the destruction of wall structures made of calcium silicate brick and carbon dioxide corrosion of hydration products in calcium silicate brick and cement brick in concrete. It is found that carbonization in hydration products results in their transfer to a denser state which is accompanied by the reduction in the volume of shrinking deformations which cause sometimes the breach and fracture of material. When considering the water/cement system, it is shown that more credible and visible results on shrinkage processes can be obtained through parameters of its volume phase composition which allow controlling the parameters of the structure rearrangement from the initial to final states of the system, i.e. from cement paste to cement brick hardened at different time intervals. It is shown that after 28 days of hardening, the degree of filling the initial pore space with hydration products reaches 67%, while the porosity of cement brick in the final state is 16.5% at the initial composition of the solid phase Fs1 = 0.5; 13.5% at Fs1 = 0.55; 12.8% at Fs1 = 0.6; 11.2% at Fs1 = 0.65 and 0.7-9.0% at Fs1 = 0.7. It follows that shrinkage processes intensify in cement paste with the initial porosity over 40-50 %. It is possible to reduce the negative effect from shrinkage processes via the addition of carbonate-containing mineral additives such as lime rock or dolomite to the cement or lime and sand composition.
42
Borodin, Stanislav L., and Denis S. Belskikh. "Mathematical modeling of the equilibrium complete replacement of methane by carbon dioxide in a gas hydrate reservoir at negative temperatures." Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 6, no. 2 (2020): 63–80. http://dx.doi.org/10.21684/2411-7978-2020-6-2-63-80.
Full textAbstract:
Gas hydrates, which contain the largest amount of methane on our planet, are a promising source of natural gas after the depletion of traditional gas fields, the reserves of which are estimated to last about 50 years. Therefore, it is necessary to study the methods for extracting gas from gas hydrates in order to select the best of them and make reasoned technological and engineering decisions in the future. One of these methods is the replacement of methane in its hydrate with carbon dioxide. This work studies the construction of a mathematical model to observe this method. The following process is considered in this article: on one side of a porous reservoir, initially saturated with methane and its hydrate, carbon dioxide is injected; on the opposite side of this reservoir, methane and/or carbon dioxide are extracted. In this case, both the decomposition of methane hydrate and the formation of carbon dioxide hydrate can occur. This problem is stated in a one-dimensional linear formulation for the case of negative temperatures and gaseous carbon dioxide, which means that methane, carbon dioxide, ice, methane, and carbon dioxide hydrates may be present in the reservoir. A mathematical model is built based on the following: the laws of conservation of masses of methane, carbon dioxide, and ice; Darcy’s law for the gas phase motion; equation of state of real gas; energy equation taking into account thermal conductivity, convection, adiabatic cooling, the Joule — Thomson effect, and the release or absorption of latent heat of hydrate formation. The modelling assumes that phase transitions occur in an equilibrium mode and that methane can be completely replaced by carbon dioxide. The results of numerical experiments are presented.
43
Oral, N. Gözde, and Mesut B. Özdeniz. "Embodied Energy Assessment of Building Materials Used : Case Study Northern Cyprus." Open House International 43, no. 3 (September 1, 2018): 22–32. http://dx.doi.org/10.1108/ohi-03-2018-b0004.
Full textAbstract:
It is a well-known fact that global warming is the extraordinary threat facing the world. The main reasons of these are human activities. Human beings have been contributing to the global warming in different ways for many years. Right material and product selection are some of the most important factors in the process of eliminating the negative effects of constructions on the natural environment and users. The life cycle of building materials involves the processes in which the products are extracted from the source. These processes are the stages of production, transportation, construction, use, demolition and destruction. Making wrong decisions in the selection and use of building materials may cause negative effects in the environment. The major purpose of this study is to to examine the embodied energy of of the traditional and comtemporary building materials according to the characteristics of the local climate. It will answer the question of; “What the embodied energy of a house was in the past and now” in Northern Cyprus. It will help to find out building materials with low embodied energy. There is no published database prepared for or in Northern Cyprus. In order to measure and evaluate the embodied energy of buildings and construction products in the world, there are no integrated systems in the Northern Cyprus at this point, while different countries have unique systems depending on the environmental, economic and social conditions of those countries. Measuring and controlling the environmental performance of environmental development is essential for the sustainable development of the Northern Cyprus. By using the The Inventory of Carbon & Energy (ICE) program the embodied carbon statuses, embodied energy and transport energy and manufacture energy were discussed for each building material. As a result of this research it was found that locally produced or locally existing materials do not always give the best result in terms of embodied energy all the time. The energy consumption of building materials used in buildings and their associated carbon emissions will assist in the selection of environmentally friendly materials.
44
Al-Najar, Ammar Kareem, and Labeeb S. AL-Yassri. "Numerical Analysis of One-Way Continuous Slab with Partial Corrosion Strengthened with Deferent Material." Al-Qadisiyah Journal for Engineering Sciences 14, no. 1 (April 30, 2021): 006–13. http://dx.doi.org/10.30772/qjes.v14i1.713.
Full textAbstract:
This paper investigates numerically the combined effects of a construction joint and reduction in the cross-section area of negative reinforcement in one-way continuous slab on the structural behavior and the efficiency of three types of strengthens techniques. In this paper, the modles were greated by ABAQUS (software) is used to numericaly represent the specimens and simulate the applied loading. This numerical study's models represent six one-way continuous slabs, as a part of a expermentail study. The specimen's dimensions were (2200 mm in length, 500 mm width ,and 100 mm thickness). Five of the six models had a vertical construction joint and reduced the negative reinforcement steel bars' cross-sectional area. The sixth specimen used as refreance. The proposed strengthening technique were: Carbon fiber Reinforced Polymers strips, 6 mm Carbon fiber Reinforced Polymers bars Near Surface Moutain technique and steel plates. All the proposed strengthening's applied to the tension side on the top face at the internal support. The program outcomes are represented visually as stresses distribution diagrams,load-deflection curves, and cracks pattern. The results from the numerical analysis compared to the experiment results. In the experiment, the reduction in the cross-section area resulting from partial corrosion happened in one span due to the outdoor atmosphere's exposure because of the stoppage in the concrete pouring, which also resulted in forming the construction joint. The results highlighted the construction joint's effect and the steel cross-sectional area reduction on the ultimate load and the deflection. The proposed strengthening methods improved the member's overall responses, and There was a good convergence between the numerical and experimental works that verify the specimens' observed behavior.
45
Wang, Qing, and Yuhang Xiao. "Has Urban Construction Land Achieved Low-Carbon Sustainable Development? A Case Study of North China Plain, China." Sustainability 14, no. 15 (August 1, 2022): 9434. http://dx.doi.org/10.3390/su14159434.
Full textAbstract:
The rapid expansion of urban construction land (UCL) provides a guarantee to support rapid economic development and meet the social needs of urban residents. However, urban construction land is also an important source of carbon dioxide emissions. Therefore, it is of great research value to investigate the relationship between UCL and carbon emissions in depth. Based on this, using panel data of 57 cities in the North China Plain from 2007 to 2018, the study found that there is a strong positive correlation between UCL and CO2 emissions. It can be seen that the expansion of UCL is an important source of CO2 emissions. On the basis of this research conclusion, first, this paper uses the Tapio decoupling model to analyze the decoupling relationship between UCL and carbon emissions in the North China Plain. Then, the spatial autocorrelation analysis was applied to explore the spatial correlation characteristics of the carbon emission intensity of UCL in cities in the North China Plain. Finally, using the GTWR model to analyze the influencing factors of the carbon emission intensity of UCL, the following conclusions were drawn. In 2007–2015, the decoupling relationship performed well, but it deteriorated significantly from 2015 to 2018; in addition, there was a significant positive spatial correlation of carbon emission intensity of UCL. Various influencing factors have a significant impact on the carbon emission intensity of UCL, for example, the urbanization rate, industrial structure, economic development level, and population density have a positive impact, and environmental regulations, foreign investment intensity, land use efficiency and greenery coverage have a negative impact. The research results of this paper provide a scientific basis for making decisions and optimizing pathways to achieve carbon emission reduction from UCL in the North China Plain, as well as certain reference values for other regions to achieve low-carbon development of UCL. This is significant for exploring the optimal solution of land and carbon emissions and building a harmonious human–land relationship.
46
Vanova, Rozalia, Patrik Stompf, Jozef Stefko, and Jaroslava Stefkova. "Environmental Impact of a Mass Timber Building—A Case Study." Forests 12, no. 11 (November 15, 2021): 1571. http://dx.doi.org/10.3390/f12111571.
Full textAbstract:
The study focuses on a life cycle assessment of a wood-based residential building and evaluates the magnitude of individual construction components—foundations, flooring, peripheral wall, inner walls, ceiling, roof, windows, and doors—in terms of climate change; acidification; eutrophication; photochemical oxidation; depletion of abiotic elements and fossil fuels; and water scarcity categories within the system boundaries of the Product stage of the life cycle. The assessment was done using the SimaPro software and the ecoinvent database. The results pointed at the advantages of mass timber as a construction material and highlighted the significance in the type of insulation used. Foundations were found to bear the highest share of impact on photochemical oxidation reaching nearly 30% and depletion of fossil fuels accounting for about 25% of that impact. Peripheral wall was ranked the worst in terms of impact on acidification and eutrophication (more than 25% of both), depletion of elements (responsible for 50% of that impact), and had about 60% impact on water scarcity. After adding up carbon emissions and removals, the embodied impact of the whole construction on climate change was detected to be 8185.19 kg CO2 eq emissions which corresponded with 57.08 kg CO2 eq/m2 of gross internal area. A negative carbon composition of the construction was also set.
47
Chaaruchandra, Korde, Ashok Gupta, and P. Sudhakar. "Experimental Study of Twin Bamboo Concrete Composite Column under Laterally Restrained Pure Axial Loading." Key Engineering Materials 517 (June 2012): 203–7. http://dx.doi.org/10.4028/www.scientific.net/kem.517.203.
Full textAbstract:
Bamboo has a huge potential to be used under affordable housing. The beauty about bamboo is that it has an inherent negative carbon foot print in its natural round form. This ability can aid in developing a nearly zero carbon foot print construction using round bamboo. Also, it has been observed in India that the traditional constructions of houses are with bamboo used as a load distributor and not as a main load bearing element. The key to achieve higher bending strength, required for main load bearing elements, is through enhancing the second moment of area to achieve desired bending strength. This is achieved using a new innovative jointing technology i.e. Haritha IITD Bamcrete Technology (HIB) for developing twin bamboo columns as main load bearing elements to develop bamcrete columns (bamboo concrete composite columns). The present study reports the performance of a twin bamboo column developed using HIB technology & tested to 32 kN load under pure axial loading, with lateral restrains, developing compressive stress of 14 MPa in bamboo (Dendrocalamus strictus).
48
Wang, Chongmei, Chu Jiayu, and Chonghong Wang. "Study on the inverted N relation and the greenhouse effect impact mechanism between Foreign Direct Investment and carbon emissions." Thermal Science 23, no. 5 Part A (2019): 2775–82. http://dx.doi.org/10.2298/tsci181218191w.
Full textAbstract:
The greenhouse effect was focused by more learners with the global warming. It has become a very serious issue the relationship between foreign direct investment (FDI) and carbon emissions in the process of sustainable economic development in Shandong. This paper studied the relationship trend in middle of FDI, carbon emissions, and greenhouse effect impact mechanism in Shandong Province based on the data from 2000 to 2016 in Shandong Province by simultaneous equation model from qualitative and quantitative analysis. There is an inverted environmental Kuznets curve correlation between FDI and carbon emissions. The mechanism of FDI?s impact on Shandong?s ecological environment in three aspects: scale effect, structure effect, and technology effect. The results show that FDI has negative scale effect, structure effect and positive technology effect on carbon emissions in Shandong Province, and the overall effect is negative. Accordingly, taking the transformation of new and old kinetic energy in Shandong Province as the goal, this paper puts forward the optimization strategy, provides policy suggestions for the government in the implementation of the transformation of new and old kinetic energy, in order to better promote economic development, industrial restructuring and upgrading, and realize the construction of regional ecological civilization.
49
Zhao, Kuokuo, Xuezhu Cui, Zhanhang Zhou, Peixuan Huang, and Dongliang Li. "Exploring the Dependence and Influencing Factors of Carbon Emissions from the Perspective of Population Development." International Journal of Environmental Research and Public Health 18, no. 21 (October 20, 2021): 11024. http://dx.doi.org/10.3390/ijerph182111024.
Full textAbstract:
Working towards sustainable population development is an important part of carbon mitigation efforts, and decoupling carbon emissions from population development has great significance for carbon mitigation. Based on the construction of a comprehensive population development index (PDI), this study adopts a decoupling model to explore the dependence between carbon emissions and PDI across 30 Chinese provinces from 2001 to 2017. Then, the stochastic impacts by regression on population, affluence and technology (STIRPAT) model is used to investigate the impact of population factors on carbon emissions. The results show that the decoupling relationship between carbon emissions and PDI has experienced a transformation from expansive negative coupling to expansive coupling and then to weak decoupling at the national level, while some provinces have experienced the same evolutionary process, but the decoupling state in most provinces is not ideal. Sending talent to western provinces and developing low-carbon supporting industries will accelerate carbon decoupling. At the national level, incorporating environmental protection into the existing education system as part of classroom teaching could contribute to carbon decoupling.
50
Beber, Raniero, Patrick Becker, and Alessandro Tarantino. "Suction as an untapped natural soil reinforcement to reduce embodied carbon in geotechnical structures: the case study of flood embankments in Hamburg area." E3S Web of Conferences 205 (2020): 12001. http://dx.doi.org/10.1051/e3sconf/202020512001.
Full textAbstract:
The commitment to cut CO2 emissions is now becoming a matter of legal obligations in several countries worldwide and the construction industry, one of the main sectors contributing to carbon emissions, is required to develop new approaches for carbon-efficient design. A study was undertaken to examine whether the inclusion of negative pore-water pressures (or ‘suction’) in the design of a flood embankment could reduce the embodied carbon associate with the construction of a new embankment or the retrofitting of an existing one. The case considered here are the embankments of the tidal Elbe area in Germany that require to be raised because of the new projection of extreme river levels due to climate change. Simple uncoupled water flow and stability analyses were considered to examine the performance of given embankment geometry. The purpose of the study is to examine whether incorporating suction into the design could allow for steeper landside slopes of the flood embankment. This would allow raising the embankment by saving considerable material and, hence, reducing the embodied carbon. At the same time, this would reduce the footprint of the raised embankment, which is a design requirement when flood embankments are embedded in the built environment as it happens in Hamburg.