Research Process of Recycled Cement Based on Life Cycle Assessment
Jiangwei Zhang （ School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China ）
Zhengheng Huang （ School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China ）
Zhishuai Zhu （ School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China ）
Shuaiyin Yang （ School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China ）
Junxiao Wei （ School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, China ）
Abstract
Utilizing recycled aggregate concrete (RAC) is important because it solves the problems of resource scarcity and pollution from urban waste. Using RAC will have a significant positive environmental impact over time. Many studies compare the environmental benefits of RAC with natural aggregate concrete (NAC) and use life cycle assessment (LCA) to analyze the benefits of RAC. However, a mature and comprehensive research system for LCA application in RAC has yet to be developed. The purpose of this study is to review the environmental impacts of RAC throughout its life cycle using the novel perspective of the four steps of LCA, identify methods to address or mitigate biases, and suggest future development directions for this technology and database improvement to provide useful references for future research. The findings show that all four stages of LCA (goal and scope definition, life cycle inventory analysis, life cycle impact assessment, and life cycle interpretation) have issues, primarily related to data measurement and selection, process step assumptions and simplifications, and algorithm limitations. We also recommend using the life cycle basic function evolution method to optimize Monte Carlo simulations, which reduces the uncertainty of LCA results. In the future outcomes of LCA ought to emphasize on the carbonation process and the analysis phase of cement's second life cycle.
Keywords
Recycled Aggregate Concrete; Life Cycle Assessment; Monte Carlo Simulation; Second Life CycleFull Text
PDFReferences
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[32] Lei Z, Qiang S, Renz Y, et al. Theory and prospect of cement life cycle evaluation for environmental impact. CEMENT, 2023; 5:16-22. https://DOI：10.13739/j.cnki.cn11-1899/tq.2023.05.004 (in Chinese)
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[34] Cao Z, Zhou L, Gao Z, et al. Comprehensive benefits assessment of using recycled concrete aggregates as the substrate in constructed wetland polishing effluent from wastewater treatment plant. Journal of Cleaner Production, 2021; 288. https://10.1016/j.jclepro.2020.125551
[35] Serres N, Braymand S, Feugeas F. Environmental evaluation of concrete made from recycled concrete aggregate implementing life cycle assessment. Journal of Building Engineering, 2016; 5:24-33. https://10.1016/j.jobe.2015.11.004
[36] Kurda R, Silvestre JD, de Brito J. Life cycle assessment of concrete made with high volume of recycled concrete aggregates and fly ash. Resources, Conservation and Recycling, 2018; 139:407-417. https://10.1016/j.resconrec.2018.07.004
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[38] Nwakaire CM, Onn CC, Yap SP, et al. The strength and environmental performance of asphalt mixtures with recycled concrete aggregates. Transportation Research Part D: Transport and Environment, 2021; 100. https://10.1016/j.trd.2021.103065
[39] Kurda R, Silvestre JD, de Brito J, et al. Optimizing recycled concrete containing high volume of fly ash in terms of the embodied energy and chloride ion resistance. Journal of Cleaner Production, 2018; 194:735-750. https://10.1016/j.jclepro.2018.05.177
[40] Mostert C, Sameer H, Glanz D, et al. Climate and resource footprint assessment and visualization of recycled concrete for circular economy. Resources, Conservation and Recycling, 2021; 174. https://10.1016/j.resconrec.2021.105767
[41] Pavlů T, Pešta J, Vlach T, et al. Environmental Impact of Concrete Slab Made of Recycled Aggregate Concrete Based on Limit States of Load-Bearing Capacity and Serviceability—LCA Case Study. Materials, 2023; 16(2). https://10.3390/ma16020616
[42] Deng Y, Zhang K, Fu Y, et al. Analysis and optimization of design parameters for recycled concrete modified with nano-CaCO3 considering environmental and economic and mechanical properties. Journal of Material Cycles and Waste Management, 2023; 25(6):3651-3663. https://10.1007/s10163-023-01785-7
[43] Cantero-Durango J, Polo-Mendoza R, Martinez-Arguelles G, et al. Properties of Hot Mix Asphalt (HMA) with Several Contents of Recycled Concrete Aggregate (RCA). Infrastructures, 2023; 8(7). https://10.3390/infrastructures8070109
[44] Kleijer AL, Lasvaux S, Citherlet S, et al. Product-specific Life Cycle Assessment of ready mix concrete: Comparison between a recycled and an ordinary concrete. Resources, Conservation and Recycling, 2017; 122:210-218. https://10.1016/j.resconrec.2017.02.004
[45] Guo Z, Tu A, Chen C, et al. Mechanical properties, durability, and life-cycle assessment of concrete building blocks incorporating recycled concrete aggregates. Journal of Cleaner Production, 2018; 199:136-149. https://10.1016/j.jclepro.2018.07.069
[46] Luo W, Liu S, Hu Y, et al. Sustainable reuse of excavated soil and recycled concrete aggregate in manufacturing concrete blocks. Construction and Building Materials, 2022; 342. https://10.1016/j.conbuildmat.2022.127917
[47] Huijbregts MAJ, Steinmann ZJN, Elshout PMF, et al. ReCiPe2016: a harmonised life cycle impact assessment method at midpoint and endpoint level. The International Journal of Life Cycle Assessment, 2016; 22(2):138-147. https://10.1007/s11367-016-1246-y
[48] Kul A, Ozel BF, Ozcelikci E, et al. Characterization and life cycle assessment of geopolymer mortars with masonry units and recycled concrete aggregates assorted from construction and demolition waste. Journal of Building Engineering, 2023; 78. https://10.1016/j.jobe.2023.107546
[49] Paula Junior A, Jacinto C, Oliveira T, et al. Characterisation and Life Cycle Assessment of Pervious Concrete with Recycled Concrete Aggregates. Crystals, 2021; 11(2). https://10.3390/cryst11020209
[50] Wang C, Cheng L, Ying Y, et al. Utilization of all components of waste concrete: Recycled aggregate strengthening, recycled fine powder activity, composite recycled concrete and life cycle assessment. Journal of Building Engineering, 2024; 82. https://10.1016/j.jobe.2023.108255
[51] Hong J, Shaked S, Rosenbaum RK, et al. Analytical uncertainty propagation in life cycle inventory and impact assessment: application to an automobile front panel. The International Journal of Life Cycle Assessment, 2010; 15(5):499-510. https://10.1007/s11367-010-0175-4
[52] Cheng L, Jin H, Liu J, et al. A comprehensive assessment of green concrete incorporated with municipal solid waste incineration bottom: Experiments and life cycle assessment (LCA). Construction and Building Materials, 2024; 413. https://10.1016/j.conbuildmat.2023.134822
[53] Abed M, Fořt J, Rashid K. Multicriterial life cycle assessment of eco-efficient self-compacting concrete modified by waste perlite powder and/or recycled concrete aggregate. Construction and Building Materials, 2022; 348. https://10.1016/j.conbuildmat.2022.128696
[54] Cassiani J, Martinez-Arguelles G, Peñabaena-Niebles R, et al. Sustainable concrete formulations to mitigate Alkali-Silica reaction in recycled concrete aggregates (RCA) for concrete infrastructure. Construction and Building Materials, 2021; 307. https://10.1016/j.conbuildmat.2021.124919
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Copyright © 2024 Jiangwei Zhang, Zhengheng Huang, Zhishuai Zhu, Shuaiyin Yang, Junxiao Wei
Publishing time:2024-05-06
This work is licensed under a Creative Commons Attribution 4.0 International License
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