Relevant bibliographies by topics / Recycled materials

Academic literature on the topic 'Recycled materials'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 January 2023

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Journal articles on the topic "Recycled materials"

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Zha, Xiao Xiong, and Kai Zhang. "The Research of Green High Performance Recycled Construct Materials." Applied Mechanics and Materials 71-78 (July 2011): 4471–75. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.4471.

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Recycled concrete aggregates have large porosity, large water absorption and high crush index. Mechanical properties of recycled concrete aggregates could be improved by adding activated water instead of ordinary water. On the basis of the experimental studies, this paper analyzes the influences on recycled concrete compression strength when using activated water. There are many different factors such as the kinds and amounts of alkali and the water slag ratio affecting the compressive strength of recycle geopolymer. The results show that activated water has a high enhancement on compressive strength of recycled aggregate concrete, and the highest compressive strength of recycled geopolymer is 57.3MPa.
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Park, Jun Kil, and Min Ook Kim. "Mechanical Properties of Cement-Based Materials with Recycled Plastic: A Review." Sustainability 12, no. 21 (October 30, 2020): 9060. http://dx.doi.org/10.3390/su12219060.

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This study summarizes existing studies on plastic recycling to determine whether ocean plastics with high pollution degrees could be used for cement-based materials. In particular, the methods to recycle plastic waste, the effects of recycled plastic on the physical and mechanical properties of cement-based materials, and their effective usage were investigated. Workability, density, compressive strength, split tensile strength, and flexural strength of cement-based materials with recycled plastics were reviewed and divided into recycled aggregates and fibers. Based on the previous investigation, the direction of research necessary to recycle marine plastics is suggested. As the amount of recycled plastic aggregate increased, the mechanical strength of cement-based materials decreased. The recycled plastic aggregate lowered the density and increased porosity of the cement-based material. Meanwhile, recycled plastic fibers reduced the compressive strength but improved the tensile strength; to effectively improve tensile strength, a volume content of less than 1.5% should be added to prevent balling fibers. Furthermore, an appropriate aspect ratio should be determined based on the type of plastic to be used.
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Malladi, Sasidhar, Wenbo Shi, Zhuoyi Zhao, and K. Jo Min. "The Impacts of Product Life and Recyclability on Landfill Disposal in Closed Loop Supply Chains." International Journal of Sustainable Economies Management 9, no. 2 (April 2020): 59–77. http://dx.doi.org/10.4018/ijsem.2020040105.

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For a single type of product, the authors formulate a series of closed loop supply chain models of a manufacturer, a service provider, and a customer. The manufacturer takes back a leased product after it provides a certain number of services and recycles a fraction of materials from the used product. They investigate how the manufacturer's decision on product life and recyclability are influenced by external conditions like landfill disposal costs and recycling subsidies (on materials and facilities). Through analytical and numerical studies, managerial insights and policy implications are derived. For practitioners, (1) a landfill disposal cost threshold exists above which it is economically viable to recycle the used products; (2) as the landfill disposal cost increases, they will increase the product life and decrease the recyclability; (3) as the recycling subsidy increases, they will decrease the product life and increase the recyclability. For a policy maker, how to subsidize the recycler based on the recycled materials amount or on the recycling facility cost is also investigated.
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KAWABATA, Nariyoshi. "Recycle for Polymers. Polymeric Materials Premised for Recycled Use." Kobunshi 48, no. 10 (1999): 774–77. http://dx.doi.org/10.1295/kobunshi.48.774.

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Yang, Hai Lin, Shou Xun Ji, Douglas Watson, Mark White, and Zhong Yun Fan. "Microstructure and Mechanical Properties of Ductile Aluminium Alloy Manufactured by Recycled Materials." Materials Science Forum 794-796 (June 2014): 1077–82. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.1077.

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The present paper introduces the microstructure and mechanical properties of the Al-Mg-Si-Mn alloy made by recycled materials, in which the impurity levels of iron are mainly concerned. It is found that the increased Fe content reduces the ductility and yield strength but slightly increases the UTS of the diecast alloy. The tolerable Fe content is 0.45wt.%, at which the recycled alloys are still able to produce castings with the mechanical properties of yield strength over 140MPa, UTS over 280MPa and elongation over 15%.The Fe content is steadily accumulated in the alloy with the increase of recycle times. However, after 13 cycles, the recycled alloys are still able to produce ductile alloys with satisfied mechanical properties.
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Momanyi, Job, Michael Herzog, and Peter Muchiri. "Analysis of Thermomechanical Properties of Selected Class of Recycled Thermoplastic Materials Based on Their Applications." Recycling 4, no. 3 (August 19, 2019): 33. http://dx.doi.org/10.3390/recycling4030033.

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Polypropylene and polystyrene are petroleum-based thermoplastics which are commonly used and disposed of in the environment after their service life, leading to environmental degradation. There is a need to recycle polypropylene and polystyrene, but the effect of recycling on thermo-mechanical properties is not well understood. This study aims to determine thermo-mechanical properties of the recycled polypropylene and recycled polystyrene and compare them with corresponding virgin polypropylene and newly produced polystyrene (general purpose polystyrene 1540 and high impact polystyrene 7240). The study was carried out by preparing bar-shaped samples of recycled polypropylene, recycled polystyrene, general purpose polystyrene 1540, and high impact polystyrene 7240 by compression molding using a hot press and thermally characterizing them to determine glass transition temperature and melting temperature using differential scanning calorimetry. The changes in Young’s modulus, tensile strength, hardness, and toughness due to recycling activities were determined at room temperature (24 °C), 40 °C, 60 °C, and 80 °C. The thermo-mechanical properties of recycled polystyrene (PS) were found to be comparable to those of high impact polystyrene (HIPS) 7240. The study revealed that the hardness and toughness for the recycled polymers were higher than those of corresponding virgin polymers. On the other hand, tensile strength and Young’s modulus for the recycled polymers were lower than those of the virgin polymers. Understanding the thermo-mechanical properties of the recycled polymers will contribute to more industrial applications hence increase the rate of recycling, resulting in a reduction in environmental pollution.
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Mushtruk, Mihjlo Mihajlovich. "BIODIESEL FROM RECYCLED MATERIALS." Научный взгляд в будущее, no. 05-01 (October 12, 2017): 67–72. http://dx.doi.org/10.30888/2415-7538.2017-05-01-103.

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Kawakami, Atsushi, Kazuyuki Kubo, Iwao Sasaki, and Takashi Kano. "Study on the Recycling Method for Drainage Asphalt Pavement and Evaluation for its Durability." Advanced Materials Research 723 (August 2013): 664–69. http://dx.doi.org/10.4028/www.scientific.net/amr.723.664.

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In Japan, drainage asphalt pavement (DAP) is widely used especially on the highway and the express way. However, because of the existing porous asphalt materials consist of DAP use polymer modified bitumen, and the aggregate gradation of DAP is differ from conventional mixture, it is difficult to use those porous asphalt materials as the recycled aggregate for reclaimed asphalt pavement. Therefore, the recycling method for recycled DAP which were consisted of recycled porous asphalt materials and virgin aggregates has not been established yet. This paper describes that the recycling method for recycled DAP was considered, and the workability and five years durability was also verified by trial construction of the recycle DAP and new DAP which were consisted of virgin aggregate on the national highway.
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Folayan, Tinu-Ololade, Kulwinder Dhindsa, Dianne Atienza, Ruiting Zhan, Anna Jonynas, and Lei Pan. "Direct Recycling of Cathode Active Materials from EV Li-Ion Batteries." ECS Meeting Abstracts MA2022-01, no. 5 (July 7, 2022): 610. http://dx.doi.org/10.1149/ma2022-015610mtgabs.

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Direct recycling of Li-ion batteries is a promising and low-cost recycling technology since the process recovers values of active materials directly without converting active materials into metal elements. However, the process is challenging from a separation perspective due to purity requirement. Herein, a new physical separation system was developed to recycle and produce ultra-high purity of cathode active materials from EV Li-ion batteries. Results showed that the recycled cathode active material product contained 99% purity of active materials with less than 500 ppm of aluminum and copper. Both the stoichimetry and structure of the recycled cathode active materials remained the same compared with those collected manually from electrode sheets. Results obtained from electrochemical testing showed that the capacity of the recycled materials was comparable to that of pristine cathode active materials, despite there was a lithium loss associated with battery charging and discharging. The present result demonstrates a viable direct recycling process for electric vehicle Li-ion batteries.
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Moore, Jordan, Daniel Folkinshteyn, and Jordan P. Howell. "The potential for exchange-traded futures on recycled materials to improve recycling efficiency." Investment Management and Financial Innovations 19, no. 3 (August 5, 2022): 93–104. http://dx.doi.org/10.21511/imfi.19(3).2022.09.

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Recycling has substantial environmental and economic benefits, but the recycling industry is relatively inefficient. Approximately half of all recyclable material is not actually recycled, and this inefficiency is economically and environmentally costly. This paper investigates the potential for exchange-traded futures on recycled materials to increase efficiency for the recycling industry by improving the market quality for firms that buy and sell recycled materials. The aim of this study is to statistically analyze a novel data set of prices for recycled materials to demonstrate the potential efficiency gains to introducing exchange-traded futures on recycled materials. The theoretical basis for this financial innovation is numerous previous studies showing that introducing exchange-traded derivatives improves the market quality of the underlying asset. The results of the analysis show that price volatility of recycled materials is generally high, with monthly standard deviation greater than 6%. Price volatility of recycled materials is excessive compared to price volatility of analogous new materials. Also, stock price volatility of waste management firms is positively related to price volatility in recycled materials. Price volatility of recycled materials explains 12% of the excess stock price volatility for waste management firms. This paper includes a practical discussion of proposed specifications and standards for these new financial contracts and plans for further research studies. Along with previous studies on the listing of exchange-traded derivatives, the conclusion of the statistical analysis is that there are large potential economic and environmental benefits to listing exchange-traded futures on recycled materials.
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Dissertations / Theses on the topic "Recycled materials"

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Ogwuda, Olisanwendu Ikechukwuka. "Materials science appraisal of recycled construction materials for roadways." Thesis, Abertay University, 2007. https://rke.abertay.ac.uk/en/studentTheses/70d295b3-60d9-427e-a012-c9cc05ac83e1.

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This thesis reports on a materials science appraisal for recycled construction materials in roadways, that supports engineering decision-making. Inconsistent performance criteria for roadway materials and the variable nature of material source have prompted the need for this research. The aim of the study is to investigate the application of a materials science appraisal to recycled construction materials for use in roadways. The investigation is undertaken through a literature review of roadways, conceptual development of the materials science appraisal methodology, and demonstration of the application of the materials science appraisal to recycled construction materials; and how this supports engineering decision-making. The literature review revealed that there are numerous and proven uses of recycled and secondary materials in roadway applications but there was a lack of necessary integration of materials into categories by material-type, which can better describe behaviour in an engineering situation. Three novel fundamental material types (ceramic, metallic, and polymeric) have been described. The conceptual development of the innovative and novel materials science appraisal, based on material-type, has defined how materials science through a systematic step-by-step procedure can be used to achieve engineering sustainability in roadways and provide support in engineering decision-making. The application of the novel concept of the materials science appraisal to recycled construction materials is shown through the essence of laboratory testing. The results from the materials science appraisal, together with sensitivity analysis, give an informed engineering decision on product choice. The appraisal is novel in that it is proposing a new theory on materials science and developed a paradigm shift in the evaluation of recycled construction materials. The appraisal overcomes the absence of materials science thinking in the field of roadway engineering. The materials science appraisal is of benefit to various stakeholders (client, consultant, supplier and contractor) as it provides a method for addressing material uncertainties. A system now exists for introducing into designs and any contract the principles of the materials science appraisal that will be of great benefit to industry.
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Rad, Taghi. "Microstructural characteristics of recycled cementitious materials." Thesis, University of Hertfordshire, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340038.

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Rogetzer, Patricia, Lena Silbermayr, and Werner Jammernegg. "Sustainable sourcing of strategic raw materials by integrating recycled materials." Springer Nature, 2018. http://dx.doi.org/10.1007/s10696-017-9288-4.

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In this paper we investigate a manufacturer's sustainable sourcing strategy that includes recycled materials. To produce a short life-cycle electronic good, strategic raw materials can be bought from virgin material suppliers in advance of the season and via emergency shipments, as well as from a recycler. Hence, we take into account virgin and recycled materials from different sources simultaneously. Recycling makes it possible to integrate raw materials out of steadily increasing waste streams back into production processes. Considering stochastic prices for recycled materials, stochastic supply quantities from the recycler and stochastic demand as well as their potential dependencies, we develop a single-period inventory model to derive the order quantities for virgin and recycled raw materials to determine the related costs and to evaluate the effectiveness of the sourcing strategy. We provide managerial insights into the benefits of such a green sourcing approach with recycling and compare this strategy to standard sourcing without recycling. We conduct a full factorial design and a detailed numerical sensitivity analysis on the key input parameters to evaluate the cost savings potential. Furthermore, we consider the effects of correlations between the stochastic parameters. Green sourcing is especially beneficial in terms of cost savings for high demand variability, high prices of virgin raw material and low expected recycling prices as well as for increasing standard deviation of the recycling price. Besides these advantages it also contributes to environmental sustainability as, compared to sourcing without recycling, it reduces the total quantity ordered and, hence, emissions are reduced.
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Lidelöw, Sofia. "Environmental assessment of construction with recycled materials." Doctoral thesis, Luleå, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26269.

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The use of industrial residues as raw materials in construction raises concerns over the potential leaching and dispersal of hazardous constituents from them into the environment. Their leaching behaviour has been studied in laboratory assays, but leaching processes in the field over larger spatial and temporal scales are more complex due to variations in the conditions the materials are exposed to, and less well understood. Hence, estimates of the potential environmental loads associated with the use of such materials based on laboratory tests may be inaccurate. This thesis addresses the environmental implications of using recycled materials in road and landfill cover constructions. The focus is primarily on the leaching of inorganic constituents from six types of materials: incineration ashes, copper smelter slag, blast-furnace slag, recycled concrete, natural rock and contaminated soil. The leaching behaviour of constituents from these materials were assessed in both laboratory batch leaching tests and monitoring programs in which the water percolating through them in field applications were sampled over one to ten years. Leaching data were evaluated using statistical and geochemical modelling. In addition, assessment methods and criteria to judge the environmental suitability of substituting natural materials for recycled materials in construction were reviewed. It was found that leachates from recycled materials in the constructions contain higher concentrations of several constituents than natural water and leachates from conventional materials. However, the rates and extent of constituent leaching were affected by the application methods in various ways that are explored and discussed. The results of simplified leaching tests did not always reflect the leaching behaviour in the field, which highlight the importance of developing assessment methods that allow case-specific factors to be taken into account. The environmental impacts of leaching must also be considered in relation to the expected impacts of the default alternative, i.e. landfilling of industrial residues and exploitation of natural resources. Combinations of case-specific assessments and system analyses would be the ideal approaches to evaluate impacts at both local and regional scales.
Användningen av industriella restprodukter som konstruktionsmaterial inom anläggningsbyggande väcker frågan om möjlig utlakning och spridning av förorenande ämnen från materialen till omgivande miljö. Materialens lakningspotential bestäms vanligen genom lakförsök utförda under kontrollerade förhållanden i laboratorium. Lakningsprocesser i fält sker dock över större rums- och tidskalor och är mer komplexa på grund av variationer i miljön som materialen exponeras för. Uppskattningar av materialens möjliga miljöpåverkan baserade på laboratorietester kan därför vara felaktiga. Den här avhandlingen handlar om den miljömässiga betydelsen av att använda återvunna material som konstruktionsmaterial i vägar och deponisluttäckningar. Fokus är i huvudsak på utlakningen av oorganiska ämnen från sex typer av material: förbränningsaskor, kopparslagg, hyttsten, återvunnen betong, naturligt berg och förorenad jord. Utlakningen från dessa material undersöktes med hjälp av både skakförsök i laboratorium och kontrollprogram där vatten som perkolerade materialen i fältapplikationer (sk. lakvatten) provtogs under ett till tio år. Lakvattendata utvärderades med hjälp av statistisk och geokemisk modellering. Dessutom granskades olika bedömningsmetoder och kriterier som kan användas för att bedöma den miljömässiga lämpligheten av att använda återvunna istället för naturliga material i anläggningskonstruktioner. Lakvatten från återvunna material i de undersökta konstruktionerna innehöll högre koncentrationer av flera ämnen än naturliga vatten och lakvatten från naturliga material. Dock var hastigheten och omfattningen av utlakningen beroende av hur materialet användes, vilket har undersökts och diskuteras i avhandlingen. Resultaten från förenklade skakförsök överensstämde inte alltid med observationerna i fält, vilket understryker vikten av att utveckla bedömningsmetoder där fallspecifika faktorer kan tas i beaktande. Miljöpåverkan orsakad av lakning måste också ses i relation till den påverkan som kan uppstå om restprodukterna istället deponeras och naturliga material exploateras. Kombinationer av fallspecifika och systemövergripande analyser skulle därför vara det ideala sättet att utvärdera både lokala och regionala effekter av en möjlig användning av återvunna material.
Godkänd; 2008; 20081003 (ysko)
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Carreon, Delfin G. "Stabilization of marginal soils using recycled materials." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001700.

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Lacalle, Jiménez Helena Isabel. "Airfield pavement design with cold recycled materials." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/44286/.

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The UK has adopted the concept of sustainable development and the construction industry is playing a key role in improving the efficient use of materials. The aim is to minimise the waste generated and maximise quantities of materials reused or recycled, minimising raw material consumption. Using Reclaimed asphalt pavement (RAP) is a rehabilitation technique which involves recycling materials from asphalt layers that have already been in service. This reduces the use of new bitumen and aggregates and avoids disposal. However, UK pavements constructed prior to 1980 or surfaced in the late 1980’s may contain tar, a carcinogenic substance that cannot be reheated and, therefore, cannot be recycled into hot mix asphalt (HMA). Recycling these pavements into unbound materials is also prohibited; consequently, disposal or cold recycling are the two available options. Cold recycling of asphalt is a proven technique that reduces material disposal and raw material and energy consumption. The reduction in energy consumption is largely achieved by avoiding aggregate drying and mixing of the material at ambient temperature. In this sense, using cold recycled bound materials (CRBMs) becomes the most economic and sustainable option. However, despite the increasingly common use of CRBM in roads, the specifications for the use of these materials in airfields are under-developed and there is no guidance to ensure that pavement design with these materials is trustworthy. This is the reason why this Thesis focuses on airfield pavement design with CRBM. The aim of this investigation is to develop a design methodology to use CRBMs in airfield pavements. For this purpose, the objectives were to review past experience on performance of these materials, measure and analyse the effect of key variables on performance to establish material limitations and develop a design methodology, proposing design guidance for airport authorities and practitioners. To achieve the project aims and objectives, a literature review was carried out focusing on pavement engineering, airfield pavement design and CRBM. The objective was to gain sufficient knowledge on key areas to conduct the research. Based on this literature review it was decided to use foamed bitumen as the cold technology and Kenlayer as pavement analytical design software. It was also found that the current design methodology for using CRBM in airfields is to conservatively equate material properties to those of a HMA commonly used in airfield base course (HDM50). Therefore, this practise should be analysed to decide if it is correct or if it can be improved. Subsequently, a laboratory programme was established to analyse CRBM mechanical properties and, therefore, understand the material’s behaviour and performance under cyclic loading. RAP, fly ash, cement and foamed bitumen were used to manufacture laboratory specimens, compacted with a gyratory compactor. These specimens were tested to analyse densities, air voids, stiffness, strength, permanent deformation and fatigue. For developing a new design methodology, Kenlayer was used to analyse strains and stresses within the airfield pavement. The first step was to ascertain Kenlayer adequacy and establish inputs related to loading, traffic and subgrade condition. For this purpose, 96 case studies were analysed with HMA, with different aircraft types, traffic and subgrade conditions. These cases were compared to those of a well-established airfield design guide, namely DMG 27. Then the software could be used to model pavements containing CRBM and with the knowledge gained in the laboratory about its behaviour, establish layer thicknesses to bear traffic during the pavement design life. With the results obtained from the laboratory investigation it was concluded that CRBM mixes have acceptable properties for use in airfield pavements. Resistance to permanent deformation, fatigue, temperature susceptibility and durability results show that these materials give reasonable performance; however, they differ from conventional hot mixes. Thus, current practice can be improved, justifying the need for design guidance for using CRBM in airfields. As fatigue is one of the main failure modes in asphalt mixtures and flexible pavements, a deeper study into fatigue behaviour of CRBM was carried out using Indirect Tensile Fatigue Tests (ITFT) in strain control mode and Wheel Track Test (WTT). The results showed different failure mechanisms for CRBM from those of HMA; thus, a new failure criterion was established. In HMA the failure criterion of 50% stiffness reduction is related to the appearance of macro cracks. CRBM develops dispersed micro-cracking that lowers the mixture stiffness without producing macro cracks until late in the material’s life. Macro cracks only tend to appear at 70% stiffness reduction; therefore, this was established as new failure criterion for CRBM. Once CRBM properties were defined, the pavement structure could be modelled. The results obtained from HMA modelling showed that the software and the inputs selected were appropriate for this investigation. Then the HMA base properties were substituted with CRBM properties obtained in the laboratory. The results showed that DMG 27, Chart 7, can be used for designing airfield pavements using CRBM increasing the base thickness by 9%, with a minimum Dry Lean Concrete (DLC) layer of 150 mm. A deterioration analysis was also carried out with the design software. In this case the aim was to analyse how strains distribute within the CRBM layer and how this affects the pavement life. With these analysis, it was highlighted how different CRBM behaves compared to HMA. Strains distributed linearly within the HMA layer; however, this does not happen with the CRBM. Moreover, this analysis showed how fatigue data can be used to obtain a more accurate pavement life taking into account different strain levels. Nevertheless, the study carried out here is based on laboratory performance of one type of CRBM. There is need for further investigation to establish a relationship between fatigue behaviour in the laboratory and the field and confirm how micro cracking affects the bearing capacity of the CRBM layer, establishing shift factors to optimise CRBM layer thickness. Moreover, the laboratory study has been carried out analysing CRBM in the same way as HMA; therefore, further study is needed to analyse the adequacy of the testing methodology. Also, modelling has been done comparing one CRBM to one HMA, namely HDM50; therefore, further investigation is needed to open the model to other HMA. Consequently, the design guidance presented here is a first step towards an airfield pavement design guide and further study is needed to optimise it.
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Vu, Quoc Hung. "Modelling pollutants leaching from recycled construction materials." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/130795/1/Quoc%20Hung_Vu_Thesis.pdf.

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This research developed new models to replicate metal leaching characteristics from recycled concrete aggregate (RCA) and reclaimed asphalt pavement (RAP). Model development was supported by a comprehensive experimental and analytical program with multiple influential factors. New models were developed so that they are readily applicable in commercial models to replicate pollutant leaching and solute transport in soil environments. Outcomes of this study will enhance the sustainable use of waste products such as RCA and RAP in the construction industry and relieve the stresses on natural quarry products.
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Palmquist, Shane M. "Compressive behavior of concrete with recycled aggregates /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2003.

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Thesis (Ph.D.)--Tufts University, 2003.
Adviser: Daniel C. Jansen. Submitted to the Dept. of Civil Engineering. Includes bibliographical references (leaves 146-152). Access restricted to members of the Tufts University community. Also available via the World Wide Web;
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Krezel, Zbigniew Adam, and n/a. "Recycled aggregate concrete acoustic barrier." Swinburne University of Technology, 2006. http://adt.lib.swin.edu.au./public/adt-VSWT20060821.154340.

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This document reports on a research project aimed at developing a concrete acoustic barrier made from Recycled Aggregate (RA) Concrete. The research project was undertaken in response to the needs expressed by the Victorian concrete recycling industry. The industry, the scientific community conducting research into relevant disciplines, and the community at large, represented by Victorian government agencies, are of the opinion that there is a need to devise a higher value utilisation application for selected concrete recycling products. This document outlines the rationale and objectives of the research project which involves the examination of Recycled Concrete (RC) Aggregate, the design and examination of RA Concrete, and finally the development of an acoustic barrier made from RA Concrete. The literature review presented in this report examines aspects of concrete recycling and concrete technology pertaining to traditional and alternative constituent materials for concrete production. Firstly, the importance and influence of fine and coarse aggregate on basic properties of concrete is introduced. Secondly, an account on the use of alternative materials in concrete technology, especially of coarse recycled aggregates and supplementary cementitious materials (SCM) is described. Thirdly, some of the physical and mechanical properties and how the use of RC Aggregate and SCM changes these properties are discussed. Fourthly, a number of commonly used techniques and neutron scattering techniques to investigate aggregate and concrete properties are introduced and discussed. Fifthly, the porosity of aggregate and concrete including durability are specifically discussed and testing methods are reasoned. The literature review also discusses the use of no-fines concrete; its physical, mechanical and acoustic properties. Finally it presents an account of the use of concrete in transportation traffic noise attenuation devices. This document continues with an outline of a methodology that was adopted in this research project. It outlines experimental work aimed at examining the properties of RC Aggregate which amongst other properties includes porosity, particle size distribution, water absorption, shape and density. It continues examining RA Concrete properties and includes, among other properties, compressive strength, porosity and durability as well as sound absorption of acoustic barrier. The methodology introduces standard and purposely modified test procedures used in the examination of aggregates, concrete and acoustic barrier. An account of various research techniques is presented, spanning from simple visual observations to more sophisticated neutron scattering techniques. The summary of test procedures follows a description of test specimen composition and their sizes, and a suite of tested specimens. It also introduces statistical methods used to analyse test results. After a detailed description of the aggregate, concrete and RA Concrete acoustic barrier, the document outlines a summary of data generated through the experimental program of this research project. The data on fine aggregate, on selected 14/10mm coarse RC Aggregate, on concrete made from natural and recycled aggregate and on acoustic barrier are presented and discussed. Test results of various physical, mechanical and acoustic properties of aggregate, concrete and barrier are reported, analysed and discussed. The data from observations, visual assessment and scientific experimentation of specific properties are then crossed analysed in a search for relationships between properties of fine and coarse aggregates and properties of concrete made from such aggregates. A cross analysis of data on ?less-fines? RA Concrete and on the acoustic performance of barrier is examined, and the relationship between the volume of interconnected voids in a porous part of ?less-fines? concrete, and the sound absorption of acoustic barrier is discussed and reported. The document then presents a synthesis of the literature review results, project aims adopted within the experimental program and test results in the three main areas of this research project. These areas include recycled concrete aggregate, recycled aggregate concrete and acoustic barrier made from RA Concrete. Finally, conclusions reached through the course of this investigation are summarised and recommendations are proposed in relation to the RA Concrete acoustic barrier. The main conclusion is that selected RC Aggregate can be used in the production of concrete of a compressive strength of 25MPa, if the moisture content and water absorption in the aggregate are closely monitored, and the foreign material content is kept below 1.5%. The author concludes that acoustic barrier made from selected RC Aggregate has unique sound absorption characteristics that can easily be tunable by a selection of appropriate aggregate and by specific concrete mix designs. Recommendations for further research are also proposed.
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Krezel, Zbigniew Adam. "Recycled aggregate concrete acoustic barrier." Australasian Digital Theses Program, 2006. http://adt.lib.swin.edu.au/public/adt-VSWT20060821.154340.

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Thesis (PhD) - Swinburne University of Technology, 2006.
Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Civil Engineering, Swinburne University of Technology - 2006. Typescript. Includes bibliographical references.
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Books on the topic "Recycled materials"

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Agnihotri, Arvind Kumar, Krishna R. Reddy, and Ajay Bansal, eds. Recycled Waste Materials. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-7017-5.

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Jewellery from recycled materials. London: A. & C. Black, 2009.

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MacDonald, Jaimie. Jewellery from recycled materials. London: A. & C. Black, 2009.

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MacDonald, Jaimie. Jewellery from recycled materials. London: A. & C. Black, 2009.

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MacDonald, Jaimie. Jewellery from recycled materials. London: A. & C. Black, 2009.

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Cross, Diana. Craft from recycled materials. Rozelle, NSW, Australia: S. Milner Pub., 1993.

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Real, Luís Eduardo Pimentel. Recycled Materials for Construction Applications. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-14872-9.

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ill, Wood Amanda, ed. Recycled! Minneapolis, Minn: Picture Window Books, 2003.

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Service, United States Forest, ed. Housing, a home for recycled materials. [Washington, D.C.?]: U.S. Dept. of Agriculture, Forest Service, 1994.

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Edwards, A. C. Recycled asphalt wearing courses. Crowthorne: Materials and Construction Division, Highways Group, Transport and Road Research Laboratory, 1989.

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Book chapters on the topic "Recycled materials"

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Richardson, Alan. "Recycled Materials in Concrete." In Reuse of Materials and Byproducts in Construction, 67–109. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5376-4_4.

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Vernon, Siobhan, Susan Irwine, Joanna Patton, and Neil Chapman. "Recycled materials and products." In Landscape Architect's Pocket Book, 98–100. 3rd ed. London: Routledge, 2021. http://dx.doi.org/10.4324/9781003119500-15.

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Lyons, Arthur. "Recycled and ecological materials." In Materials for Architects and Builders, 483–92. Sixth edition. | Abingdon, Oxon : Routledge, 2019.: Routledge, 2019. http://dx.doi.org/10.1201/9781351109550-17.

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Real, Luís Eduardo Pimentel. "Plastic Materials and Additives." In Recycled Materials for Construction Applications, 19–33. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-14872-9_2.

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Bhat, Gajanan. "PROCESSING POSTCONSUMER RECYCLED PLASTICS." In Environmentally Conscious Materials and Chemicals Processing, 357–83. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470168219.ch12.

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Real, Luís Eduardo Pimentel. "Use of Polymer Materials in Construction." In Recycled Materials for Construction Applications, 35–45. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-14872-9_3.

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Essaidi, N., L. Vidal, F. Gouny, E. Joussein, and S. Rossignol. "Recycled Geopolymer on New Formulations." In Developments in Strategic Ceramic Materials, 49–60. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119211747.ch5.

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Real, Luís Eduardo Pimentel. "Constraints to the Application of Recycled Plastics." In Recycled Materials for Construction Applications, 115–18. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-14872-9_6.

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Real, Luís Eduardo Pimentel. "Recycling." In Recycled Materials for Construction Applications, 47–101. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-14872-9_4.

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Real, Luís Eduardo Pimentel. "Recycling of the Main Plastics Used in Construction." In Recycled Materials for Construction Applications, 119–44. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-14872-9_7.

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Conference papers on the topic "Recycled materials"

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"Recycled Materials in Concrete Barriers." In SP-212: Sixth CANMET/ACI: Durability of Concrete. American Concrete Institute, 2003. http://dx.doi.org/10.14359/12732.

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Kootstra, B. R., A. Ebrahimi, T. B. Edil, and C. H. Benson. "Plastic Deformation of Recycled Base Materials." In GeoFlorida 2010. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41095(365)272.

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Tsang, Yuen Hong. "Recycled materials for solar energy conversion." In The 7th International Multidisciplinary Conference on Optofluidics 2017. Basel, Switzerland: MDPI, 2017. http://dx.doi.org/10.3390/optofluidics2017-04291.

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Bandara, Nishantha, Tarik Habib Binoy, Haithem S. Aboujrad, and Juliana Sato. "Pavement Subgrade Stabilization Using Recycled Materials." In Airfield and Highway Pavements 2015. Reston, VA: American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784479216.054.

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Majer, Stanislaw. "UTILIZATION OF RECYCLED MATERIALS IN ROAD CONSTRUCTION." In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/4.2/s18.032.

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Grubb, Dennis G., Wanxing Liu, Allen W. Cadden, and Dana N. Humphrey. "Bulkhead Design Using Recycled Materials as Backfill." In 11th Triennial International Conference on Ports. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40834(238)90.

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Azam, A. M., D. A. Cameron, A. G. Gabr, and M. M. Rahman. "Matric Suction in Recycled Unbound Granular Materials." In Geo-Congress 2014. Reston, VA: American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413272.133.

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Zofka, A., M. Chrysochoou, and I. Yut. "Spectroscopic Evaluation of Recycled Asphalt Pavement Materials." In GeoCongress 2012. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412121.162.

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Mine, Naoto, Soichiro Kuroki, Takashi Kunugi, and Hiroki Tsutsumi. "Using Recycled Materials in Residential Construction Systems." In Modern Methods and Advances in Structural Engineering and Construction. Singapore: Research Publishing Services, 2011. http://dx.doi.org/10.3850/978-981-08-7920-4_s1-c08-cd.

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Partridge, Alix J., Hsing-Yu Chen, Nguyen Hao Le, Ciqun Xu, Hendrik Eichorn, Emanuele Pulvirenti, Arianna Manzini, Andrew T. Conn, and Jonathan Rossiter. "ReRobot: Recycled Materials for Trustworthy Soft Robots." In 2022 IEEE 5th International Conference on Soft Robotics (RoboSoft). IEEE, 2022. http://dx.doi.org/10.1109/robosoft54090.2022.9762170.

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Reports on the topic "Recycled materials"

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Thembeka Ncube, Ayanda, and Antonio Bobet. Use of Recycled Asphalt. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317316.

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The term Reclaimed Asphalt Pavement (RAP) is used to designate a material obtained from the removal of pavement materials. RAP is used across the US in multiple applications, largely on asphalt pavement layers. RAP can be described as a uniform granular non-plastic material, with a very low percentage of fines. It is formed by aggregate coated with a thin layer of asphalt. It is often used mixed with other granular materials. The addition of RAP to aggregates decreases the maximum dry unit weight of the mixture and decreases the optimum water content. It also increases the Resilient Modulus of the blend but decreases permeability. RAP can be used safely, as it does not pose any environmental concerns. The most important disadvantage of RAP is that it displays significant creep. It seems that this is caused by the presence of the asphaltic layer coating the aggregate. Creep increases with pressure and with temperature and decreases with the degree of compaction. Creep can be mitigated by either blending RAP with aggregate or by stabilization with chemical compounds. Fly ash and cement have shown to decrease, albeit not eliminate, the amount of creep. Mechanical stabilizing agents such as geotextiles may also be used.
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Lula, J. W., and G. W. Bohnert. Formulation of Molding Materials From Recycled Printed Wiring Boards. Office of Scientific and Technical Information (OSTI), April 1998. http://dx.doi.org/10.2172/16830.

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Lomboy, Gilson, Douglas Cleary, Seth Wagner, Yusef Mehta, Danielle Kennedy, Benjamin Watts, Peter Bly, and Jared Oren. Long-term performance of sustainable pavements using ternary blended concrete with recycled aggregates. Engineer Research and Development Center (U.S.), May 2021. http://dx.doi.org/10.21079/11681/40780.

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Dwindling supplies of natural concrete aggregates, the cost of landfilling construction waste, and interest in sustainable design have increased the demand for recycled concrete aggregates (RCA) in new portland cement concrete mixtures. RCA repurposes waste material to provide useful ingredients for new construction applications. However, RCA can reduce the performance of the concrete. This study investigated the effectiveness of ternary blended binders, mixtures containing portland cement and two different supplementary cementitious materials, at mitigating performance losses of concrete mixtures with RCA materials. Concrete mixtures with different ternary binder combinations were batched with four recycled concrete aggregate materials. For the materials used, the study found that a blend of portland cement, Class C fly ash, and blast furnace slag produced the highest strength of ternary binder. At 50% replacement of virgin aggregates and ternary blended binder, some specimens showed comparable mechanical performance to a control mix of only portland cement as a binder and no RCA substitution. This study demonstrates that even at 50% RCA replacement, using the appropriate ternary binder can create a concrete mixture that performs similarly to a plain portland cement concrete without RCA, with the added benefit of being environmentally beneficial.
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SUGAMA, T. RECYCLED WASTE-BASED CEMENT COMPOSITE PATCH MATERIALS FOR RAPID/PERMANENT ROAD RESTORATION. Office of Scientific and Technical Information (OSTI), July 2001. http://dx.doi.org/10.2172/15011144.

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Hassett, D. J., B. A. Dockter, K. E. Eylands, and D. F. Pflughoeft-Hassett. Task 5.9 - use of coal ash in recycled plastics and composite materials. Office of Scientific and Technical Information (OSTI), July 1995. http://dx.doi.org/10.2172/565273.

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Verian, Kho Pin, Nancy Whiting, Jan Olek, Jitendra Jain, and Mark Snyder. Using Recycled Concrete as Aggregate in Concrete Pavements to Reduce Materials Cost. Purdue University, December 2013. http://dx.doi.org/10.5703/1288284315220.

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Hassett, D. J., B. A. Dockter, K. E. Eylands, and D. F. Pflughoeft-Hassett. Task 5.9 use of coal ash in recycled plastics and composite materials. Topical report. Office of Scientific and Technical Information (OSTI), November 1995. http://dx.doi.org/10.2172/245654.

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Ostowari, Ken, and Ali Nosson. Materials development and field demonstration of high-recycled-content concrete for energy-efficient building construction. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/771319.

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Wang, Kejin, James A. Gaunt, and Jiong Hu. Sequestering Lead in Paint by Utilizing Deconstructed Masonry Materials as Recycled Aggregate in Concrete. Revision 1. Fort Belvoir, VA: Defense Technical Information Center, May 2008. http://dx.doi.org/10.21236/ada495766.

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Name, No. Recycled water reuse permit renewal application for the materials and fuels complex industrial waste ditch and industrial waste pond. Office of Scientific and Technical Information (OSTI), October 2014. http://dx.doi.org/10.2172/1167540.

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