上海市建筑废弃混凝土回收利用碳效益分析  

Carbon benefit analysis of recycled utilization of construction waste concrete in Shanghai

作　　者：陈妍希 黄蓓佳[2] 晏华 王湘锦 吴晓宇 钱丹萍 卫智勇 CHEN Yanxi;HUANG Beijia;YAN Hua;WANG Xiangjin;WU Xiaoyu;QIAN Danping;WEI Zhiyong(Shanghai Urban Construction Materials Co.Ltd.,Shanghai 200438,China;Shanghai University of Technology,Shanghai 200093,China;Shanghai Construction Materials Industry Market Management Station,Shanghai 200032,China)

机构地区：[1]上海城建物资有限公司,上海200438 [2]上海理工大学,上海200093 [3]上海市建筑建材业市场管理总站,上海200032

出　　处：《新型建筑材料》2025年第3期102-105,共4页New Building Materials

基　　金：上海市2022年度“科技创新行动计划”国际科技合作项目(22510731700)。

摘　　要：在“双碳”目标和“无废城市”建设推动下,上海市废弃混凝土综合利用碳效益评估成为重要的环境管理任务。采用生命周期评价方法,构建废弃混凝土传统填埋、就地利用和回收再生处理3种处置方式的碳排放模型。结合实地调查和数据收集,评估不同处置方式的碳减排效益。结果表明,与传统填埋相比,每吨废弃混凝土就地利用可减少31.62 kgCO_(2),回收再生处理可减少29.51kgCO_(2),其中再生粗骨料、细骨料和粉料的碳减排分别为14.95、8.55、6.01 kgCO_(2)/t,就地利用的碳效益最显著,为建筑固废资源化利用提供量化依据,为建筑行业的可持续发展提供参考。Under the background of the"dual carbon"goals and the construction of"zero-waste cities",the carbon benefits assessment of waste concrete utilization in Shanghai has become an important environmental management task.This study adopts the life cycle assessment(LCA)method to establish a carbon emission model of three typical disposal scenarios:traditional landfill,on-site utilization,and recycling and regeneration.Through field investigations and data collection,the carbon reduction contributions of different disposal methods are evaluated.The results show that compared with traditional landfilling,on-site utilization can reduce carbon emissions by 31.6 kgCO_(2) per ton of waste concrete,while recycled processing can reduce 29.51 kgCO_(2) per ton.Among them,the carbon reduction contributions of recycled coarse aggregate,fine aggregate,and powder are 14.95,8.55,6.01 kgCO_(2)/t,respectively.Overall,on-site utilization demonstrating the most significant carbon benefits.This study provides a quantitative basis for the resource utilization of construction waste and supports policy formulation and resource optimization.

关 键 词：建筑废弃混凝土 回收利用 生命周期评价 碳效益 

分 类 号：TU528[建筑科学—建筑技术科学]