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Artykuły w czasopismach na temat "Carbonation in air"
Khan, Mohammad Iqbal. "Carbonation of High Strength Concrete". Applied Mechanics and Materials 117-119 (październik 2011): 186–91. http://dx.doi.org/10.4028/www.scientific.net/amm.117-119.186.
Pełny tekst źródłaZhao, Wei Xia, Juan Hong Liu, Ping Yang, Xiao Ning Yuan i Min Chen. "Effect of Aggregate Pre-Wetting and Air-Entraining Agent on Durability of Lightweight Aggregate Concrete". Advanced Materials Research 335-336 (wrzesień 2011): 1163–67. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.1163.
Pełny tekst źródłaDheilly, Rose-Marie, Yahya Sebaibi, Joseph Tudo i Michèle Queneudec. "Importance de la présence de magnésie dans le stockage de la chaux: carbonatation de l'oxyde et de l'hydroxyde de magnésium". Canadian Journal of Chemistry 76, nr 8 (1.08.1998): 1188–96. http://dx.doi.org/10.1139/v98-126.
Pełny tekst źródłaFAUSTINO, Pedro, Fábio GONÇALVES, Ana BRÁS i Ângela NUNES. "LIFETIME PREDICTION OF REINFORCED CONCRETE STRUCTURES IN CARBONATION ENVIRONMENTS CARBONATION MODELLING VS AIR PERMEABILITY MODELLING". JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 23, nr 2 (6.02.2017): 283–91. http://dx.doi.org/10.3846/13923730.2015.1068849.
Pełny tekst źródłaTassos, Christos, Kosmas Sideris, Alexandros Chatzopoulos, Nikolaos Pistofidis i Emmanouil Chaniotakis. "Influence of cement type on carbonation of concrete mixtures". MATEC Web of Conferences 163 (2018): 05005. http://dx.doi.org/10.1051/matecconf/201816305005.
Pełny tekst źródłaSchmitt, Lucie, Jena Jeong, Jean-Marc Potier, Laurent Izoret, Jonathan Mai-Nhu, Nicolas Decousser i Thomas Pernin. "Using an analysis of concrete and cement epd: verification, selection, assessment, benchmarking and target setting". Acta Polytechnica CTU Proceedings 33 (3.03.2022): 546–51. http://dx.doi.org/10.14311/app.2022.33.0546.
Pełny tekst źródłaHaibier, Abuduhelili, i Yong Xin Wu. "Effects of Mineral Admixtures on Carbonation and Chloride Ingress of Concrete". Applied Mechanics and Materials 212-213 (październik 2012): 878–82. http://dx.doi.org/10.4028/www.scientific.net/amm.212-213.878.
Pełny tekst źródłaTANAKA, RYOICHI, TAKASHI HABUCHI, TAKAHIKO AMINO i TSUTOMU FUKUTE. "A STUDY ON IMPROVEMENT AND ITS EVALUATION FOR THE SURFACE LAYER OF CONCRETE PLACED WITH PERMEABLE FORM". International Journal of Modern Physics: Conference Series 06 (styczeń 2012): 664–69. http://dx.doi.org/10.1142/s2010194512003947.
Pełny tekst źródłaNeves, R., B. Sena da Fonseca, F. Branco, J. de Brito, A. Castela i M. F. Montemor. "Assessing concrete carbonation resistance through air permeability measurements". Construction and Building Materials 82 (maj 2015): 304–9. http://dx.doi.org/10.1016/j.conbuildmat.2015.02.075.
Pełny tekst źródłaZhang, Donghao, i Wenbin Hu. "Improving Cycle Life of Zinc–Air Batteries with Calcium Ion Additive in Electrolyte or Separator". Nanomaterials 13, nr 12 (15.06.2023): 1864. http://dx.doi.org/10.3390/nano13121864.
Pełny tekst źródłaRozprawy doktorskie na temat "Carbonation in air"
Pesce, Gianluca. "Study of carbonation in novel lime based materials". Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629662.
Pełny tekst źródłaLawrence, Robert Michael Heathcote. "A study of carbonation in non-hydraulic lime mortars". Thesis, University of Bath, 2006. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438646.
Pełny tekst źródłaAl-Kindy, Adil. "Macro and microclimate effects on cover zone properties of field cured concrete". Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/12446.
Pełny tekst źródłaBarbar, Joseph Salem. "Influência do teor de ar incorporado no desempenho de concretos com diferentes teores de agregados". Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/102/102131/tde-23012017-100027/.
Pełny tekst źródłaThe use of entraining air additives in concrete is a common practice in construction and its application influences several concrete properties in the fresh and hardened state. The aim of this study was evaluate the influence of air entrained content, by additive, in concrete performance with different aggregate contents. The experimental program included the evaluation of additives effectiveness of air entrainment in cement pastes, microstructural analysis and the concretes physical and mechanical properties and durability, with different levels of entrained air and aggregates. Tests were performed in fresh to determine the air content, density and slump. In hardened concrete, density, absorption, compressive strength, elastic modulus, ultrasonic pulse velocity, accelerated carbonation and thermal conductivity tests were performed. By computed X-ray microtomography, the pores present in the concrete samples were sized and quantified and determined the concretes porosities. The air entrained concrete presented decrease in mechanical strength. Concretes with lower aggregate levels presented lower mechanical strength, carbonation speed and thermal conductivity. According to the results, it can be concluded that the synthetic resins base additive was more efficient in air entrainment; larger air content implies variability in the results of the compressive strength and elastic modulus tests; concrete with higher aggregate levels presented higher carbonation speed, for the same entrained air content; thermal conductivity is inversely proportional to the air entrained content in concrete, and as lower was the aggregate content, lower was the thermal conductivity; the increase of air content in concrete promotes increase in the pores diameter and reduction of the incidence of spherical pores.
Cafange, Daniele Maria Pilla Junqueira. "Estudo de métodos e medidas auxiliares para o controle da resistência à carbonatação de concretos estruturais de cimento Portland". Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-06042011-130020/.
Pełny tekst źródłaDurability of reinforced concrete structures should be obtained, among other factors, by adapting the concrete to the environment to protect the steel reinforcements depending on the characteristics of the cover layer. Therefore, concrete must be properly specified in the design structural and have its quality controlled during production and placing. After ABNT NBR 6118 (2007), concretes began to be specified according to fck classes in association with other mixture proportion and production variables, such as maximum water/cement ratio and minimum cement content per cubic meter. However, concretes are invariably controlled only through slump tests of fresh concrete and compressive strength tests (fcj) for stripping or assessment of fck (28 days, in common construction sites). As a result, the property in use to indirectly control concrete carbonation resistance should be fcj, since what actually differentiates the concretes are the constituent materials, the mix design and production variability. However, in practice, control of concrete carbonation resistance usually occurs through specification and acceptance of fck and one of the reasons for that may lie in the lack of more advanced methods to predict more complex physical properties, as in the case of carbonation resistance. Therefore, this study aimed to contribute to the evolution of technological control of this property in structural concrete and the experimental program had as its main goals: a) to test air content of fresh concrete by four different methods as auxiliary control variable; b) to compare three methods of accelerated carbonation; c) to compare relative area and carbonation thickness, in the diametral section of cylindrical specimens measuring 10 cm x 20 cm, through two image analysis softwares and traditional linear measurement. The concrete chosen for the purposes of this study was a class 30, ready mixed and pumped concrete, slump test of 10 ± 2 cm, water/cement ratio of 0.60 and cement content of 300 kg/m³. In a given batch plant, random samples were taken from the mixtures of six 8-m³ truck mixers that had been produced on the same date, from a given production batch of that concrete and for the supply of a nearby construction site. Each mixture was characterized in the fresh state, according to eight different properties, and then 10 cm x 20 cm cylinders were molded. Most specimens were submitted to accelerated curing by immersion in water tank at mild temperature (35 ± 5 °C), between 1 and 3 days, in an adaptation of method A of ASTM C684, followed by natural cooling and curing at room temperature, in the same tank, between 3 and 7 days. The properties in the hardened state were measured at 8, 35, 63, 91 and 203 days. The properties in the fresh state that best related to the carbonation measurements of the six samples were air content by the pressure method and compactability of compacted concrete, in a method adapted from BS EN 12350-4 (2009). Air content of the mixtures in the fresh state resulted in mean value of 1.7% and showed strong and inverse correlations with compressive strength, splitting tensile strength and with the measurements of carbonation depth. Further studies about this concrete are recommended to clarify the causes and limits of the inverse correlation, since they may result from effects of the air on the transition zone between paste and aggregates, or from concrete settlement in the fresh state. At 203 days, mean carbonation thickness in the three accelerated ageing methods resulted in between 4 and 5 mm, with coefficient of variation between 13% and 21% for eight out of nine groups of twelve specimens (two per mixture), which were differentiated according to the ageing method or the carbonation measurement. After an analysis of variance for three factors at this age, equivalences were observed in the carbonation measurements in two of the accelerated methods one of continuous drying at 40°C in ventilated oven and the other of one-day exposure to CO2 (5% and R.H. 75%) alternated with 27 days of drying at 40°C in ventilated oven, but neither showed similarity with the third method, which consisted in one-day water immersion alternated with 27 days of drying at 40°C in ventilated oven. Carbonation measurements in specimens submitted to the third method, involving only water immersion and drying, resulted in optimum contrast with the phenolphthalein indicator and showed higher probabilities of equality of means, regardless of the measurement method. It is expected that further research about these methods can bring advances in the control of concrete carbonation resistance, by mean or characteristic values, and better technological knowledge of the variables in verifying the design service life of steel reinforcement and structures in general.
Nominé, Anna V. "Synthesis of Bi₂O₂CO₃ nanosheets by electrical discharges in liquids for photocatalytic and nanoelectronic applications". Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0357.
Pełny tekst źródłaThis work provides information on the synthesis of ultrathin nanosheets composed of Bi₂O₂CO₃, hereafter referred to as BOC. The synthesis is achieved through the rapid and straightforward technique known as Electrical Discharges in Dielectric Liquids (EDDL). To ensure the reproducibility of the synthesis, a pre-treatment method involving the etching of bismuth electrodes with Nital was employed. The chosen process entails initiating electrical discharges between these electrodes while submerged in either liquid nitrogen or water. Remarkably, both liquids produced identical nanostructures, a similarity validated by optical emission spectroscopy, which confirmed the metallic nature of the discharge in both environments. Following this stage, the nanosheets undergo rapid oxidation and carbonation upon exposure to air. The proposed growth mechanism is closely linked to the ledge mechanism, considering the presence of clearly visible kinks and jogs along the edges of the nanosheets. These two-dimensional nanostructures first emerge on the cathode's surface and then grow vertically. This anisotropic growth is made possible by ion assistance in regions that exhibit comb-like patterns formed during the chemical etching step, which is a necessary precondition for high reproducibility of the discharge process. Detailed crystallographic characterization of BOC nanosheets was achieved through a range of techniques, including Transmission Electron Microscopy (TEM), Scanning Transmission Electron Microscopy (STEM), High-Resolution TEM Transmission Electron Microscopy (HRTEM), Energy-Dispersive X-ray Spectroscopy (EDX), Selected Area Electron Diffraction (SAED), Convergent Beam Electron Diffraction (CBED), Energy Filtered Transmission Electron Microscopy (EFTEM), and Electron Energy-Loss Spectroscopy (EELS). The investigation reveals that the crystallographic structure of BOC conforms to the space group I4/mmm, with lattice parameters a=3.91 Å and c=13.77 Å, a determination that was confirmed by X-ray Diffraction (XRD). The study also clarifies the potential origin of satellite spots that are consistently observed in SAED patterns along the [001] zone axis. In this research, these spots were primarily attributed to two phenomena: multiple diffraction and local disorder-to-order transformations occurring within the BOC crystal structure. This transformation entails a transition from a body-centered tetragonal structure to a primitive Bravais lattice. To gauge their practical usefulness, we assessed the photocatalytic performance of BOC nanosheets synthesized using the EDDL method and found it to be consistent with BOC obtained through alternative methods. Furthermore, we explored the electronic performance of BOC with the goal of uncovering their potential in nanodevice applications
Amponsah-Dacosta, Maxwell. "Mineralogical characterization of South African mine tailings with aim of evaluating their potential for the purposes of mineral carbonation". Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25014.
Pełny tekst źródłaMenegato, Elisa. "Ottimizzazione dei sistemi di raffreddamento di uno stabilimento di produzione di intermedi chimici". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022.
Znajdź pełny tekst źródłaHsueh, Tsang-Lin, i 薛蒼林. "STUDY ON CARBONATION BEHAVIOR OF AIR-ENTRAINING CONCRETE". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/b83kz3.
Pełny tekst źródła國立成功大學
土木工程學系碩博士班
90
Abstract In this study, accelerated carbonation equipment was used to increase the concrete specimen carbonation. The changes of air-entraining concrete inmechanics, physical character, electrical character, and microstructure were explored after carbonation accelerated under different water-cement ratio and curing conditions.These were determined through the tests of compression strength, bending strength, splitting strength, sorpvitity, water absorption, electric infiltration capacity, resistivity, ultrasonic wave propagation velocity measurement, MIP and phenolphthalein indicator measurement etc.. The results of investigation indicate the concrete compression strength, bending strength, tensile strength and splitting strength were raised. The water absorption in company with sorpvitity were decreased obviously. The resistivity and ultrasonic wave propagation velocity were increased due to electric infiltration capacity debased; and the average pore diameter was reduced relatively. According to the analysis of test variations, it revealed that concrete carbonation degree was apparent when the air-entraining admixture was applied, the specimen was under high water-cement ratio and exposed to ambient condition without curing.
Książki na temat "Carbonation in air"
Direct Air Capture and Mineral Carbonation Approaches for Carbon Dioxide Removal and Reliable Sequestration. Washington, D.C.: National Academies Press, 2018. http://dx.doi.org/10.17226/25132.
Pełny tekst źródłaCzęści książek na temat "Carbonation in air"
Radonjanin, Vlastimir, Mirjana Malešev, Ivan Lukić, Slobodan Šupić, Mirjana Laban i Olivera Bukvić. "Possible Utilization of Used Precast Building Elements Through Consideration of Concrete Carbonation Degree". W Lecture Notes in Civil Engineering, 532–41. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-57800-7_49.
Pełny tekst źródłaOzcelikci, Emircan, Alper Aldemir i Mustafa Sahmaran. "Efficient Recovery of Valuable Resources from Construction and Demolition Waste Towards Circular Economy in Construction Industry—Sustainability Assessment and a Case Study". W Creating a Roadmap Towards Circularity in the Built Environment, 161–72. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-45980-1_14.
Pełny tekst źródłaImamoto, Kei-ichi, Rui Neves i Roberto Torrent. "Carbonation rate in old structures assessed with air-permeability site NDT". W Maintenance, Monitoring, Safety, Risk and Resilience of Bridges and Bridge Networks, 150. CRC Press, 2016. http://dx.doi.org/10.1201/9781315207681-18.
Pełny tekst źródłalmamoto, Kei-ichi, Kazuyuki Shimozawa, Masaru Nagayama, Junji Yamasaki i Akio Tanaka. "Evaluation of carbonation progress of existing concrete structure based on air permeability of concrete cover". W Life-Cycle of Civil Engineering Systems, 1215–20. CRC Press, 2014. http://dx.doi.org/10.1201/b17618-179.
Pełny tekst źródłaHan, Xuesong, Yong Sun, Huaiqian Xiao, Sheng Dai, Yue Ding i Fei Xu. "Study on Cycling Damage of Abrasion and Carbonization on Ship Lock Concrete". W Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220882.
Pełny tekst źródłaKareem, Anasna, i Dipak Kumar Sahoo. "Review on the Importance of Coarse Recycled Concrete Aggregates as Alternative Construction Materials". W Advanced Materials In Civil Engineering, 51–64. Grinrey Publishing, 2024. http://dx.doi.org/10.55084/grinrey/rtm/978-81-964105-5-1_4.
Pełny tekst źródła"Evaluation of carbonation progress of existing concrete structure based on air permeability of concrete cover—a case study in Japan". W Concrete Repair, Rehabilitation and Retrofitting III, 135–37. CRC Press, 2012. http://dx.doi.org/10.1201/b12750-50.
Pełny tekst źródłaOkereke, Chukwuemeka Joshua, Olumuyiwa A. Lasode, i Idehai O. Ohijeagbon. "Exergoeconomic Analysis as a Cost-Control Mechanism in Manufacturing Operations". W Creativity Models for Innovation in Management and Engineering, 211–45. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-2339-4.ch009.
Pełny tekst źródłaStreszczenia konferencji na temat "Carbonation in air"
Sivalingam, Senthoorselvan, Stephan Gleis, Hartmut Spliethoff, Craig Hawthorne, Alexander Charitos i Guenter Scheffknecht. "Analysis and Comparison of Reactivity and CO2 Capture Capacity of Fresh Calcium-Based Sorbents and Samples From a Lab-Scale Dual Fluidized Bed Calcium Looping Facility". W ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22192.
Pełny tekst źródłaUibu, M., O. Velts, A. Trikkel i R. Kuusik. "Reduction of CO2emissions by carbonation of alkaline wastewater". W AIR POLLUTION 2008. Southampton, UK: WIT Press, 2008. http://dx.doi.org/10.2495/air080321.
Pełny tekst źródłaSenthoorselvan, Sivalingam, Stephan Gleis, Spliethoff Hartmut, Patrik Yrjas i Mikko Hupa. "Cyclic Carbonation and Calcination Studies of Limestone and Dolomite for CO2 Separation From Combustion Flue Gases". W ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50987.
Pełny tekst źródłaHúlek, Lukáš, Michal Bačuvčík, Ivan Janotka, Jakub Gašpárek i Peter Paulík. "Cement-Based Coating as Concrete Anti-Carbonation Barrier". W Non-Traditional Cement and Concrete 2023 conference. Switzerland: Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-69mmrs.
Pełny tekst źródłaKakaras, E., A. Koumanakos, A. Doukelis, D. Giannakopoulos, Ch Hatzilau i T. Weimer. "Novel CO2 Emissions Reduction Technique for IGCC Plants". W ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68977.
Pełny tekst źródłaArosio, Valeria, Chiara Moletti i Giovanni Dotelli. "Life Cycle Assessment of a Wall Made of Prefabricated Hempcrete Blocks". W 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.436.
Pełny tekst źródłaZachary, Justin, i Harvey Wen. "CO2 Sequestration by Conventional and Alternative Means". W ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22318.
Pełny tekst źródłaAthira, V. S., Shipin Prakash, Swathy Manohar i Shaurya Suman. "Lime-red mud binders for repair of heritage structures and for CO2 sequestration". W IABSE Congress, New Delhi 2023: Engineering for Sustainable Development. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2023. http://dx.doi.org/10.2749/newdelhi.2023.0666.
Pełny tekst źródłaKakaras, E., A. K. Koumanakos, P. Klimantos, A. Doukelis, N. Koukouzas i D. Giannakopoulos. "Novel Solid Fuel Gasification Power Plant for In Situ CO2 Capture". W ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27868.
Pełny tekst źródłaVyšvařil, Martin, i Patrik Bayer. "Cellulose ethers as water-retaining agents in natural hydraulic lime mortars". W The 13th international scientific conference “Modern Building Materials, Structures and Techniques”. Vilnius Gediminas Technical University, 2019. http://dx.doi.org/10.3846/mbmst.2019.014.
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