基于LCA的低碳高性能再生混凝土环境和经济效应评价

马丽丽; 曾庆鑫; 吴峰; 李彪

doi:10.13205/j.hjgc.202601022

基于LCA的低碳高性能再生混凝土环境和经济效应评价

doi: 10.13205/j.hjgc.202601022

马丽丽¹,
曾庆鑫¹,
吴峰²,
李彪^2, ,

1. 河南水利与环境职业学院, 郑州 450008;
2. 湖北工业大学土木建筑与环境学院, 武汉 430068

基金项目:

国家自然科学基金项目（52308248）；湖北省自然科学基金项目（2023AFB309）

详细信息

作者简介:
马丽丽（1989—），女，讲师，主要研究方向为新型建筑材料与结构。253918127@qq.com

通讯作者:
李彪（1990—），男，副教授，主要研究方向为固废资源化利用、结构工程与材料。libiao@hbut.edu.cn

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出版历程
- 收稿日期: 2024-08-23
- 网络出版日期: 2026-02-26
- 刊出日期: 2026-01-22

Environmental and economic effect assessment of low-carbon high performance recycled aggregate concrete based on life cycle assessment （LCA）

MA Lili¹,
ZENG Qingxin¹,
WU Feng²,
LI Biao^{2
, ,}

1. Henan Vocational College of Water Conservancy and Environment, Zhengzhou 450008, China;
2. School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China

摘要

摘要: 推广应用由工业废渣和建筑再生混凝土骨料制备的低碳高性能再生混凝土（LC-HPRAC）符合我国“双碳”战略目标的要求。基于生命周期评价（LCA）方法，综合考虑LC-HPRAC的材料力学性能、环境影响和经济性，对不同钢纤维体积掺量和再生骨料取代率的LC-HPRAC进行环境和经济效应量化分析，并采用极差和析因法分析各项指标的显著性。结果表明：普通混凝土的碳排放量为426 kg CO₂-eq/m³，LC-HPRAC的碳排放量仅为普通混凝土的42%；LC-HPRAC的环境影响主要来自原材料生产阶段的碱性激发剂、钢纤维和矿渣，合计占比为60%以上；LC-HPRAC的环境影响以温室效应为主，占比为45%以上，其中碳排放为最主要因素；LC-HPRAC的环境和经济综合效应指标总体上与再生骨料取代率和钢纤维体积掺量呈正相关；当钢纤维体积掺量为0.5%，且再生骨料取代率为50%时，混凝土的环境和经济综合效应最优。
- 低碳高性能再生混凝土 /
- 钢纤维 /
- 生命周期评价 /
- 环境影响 /
- 成本分析
Abstract: The popularization and application of low-carbon high performance recycled aggregate concrete （LC-HPRAC） prepared from industrial waste residue and building recycled concrete aggregate align with the requirements of China's Double Carbon Goals. Based on the life cycle assessment （LCA） method， the environmental and economic effect of LC-HPRAC with various steel fiber （SF） contents and recycled aggregate （RA） replacement rates were quantified， and a range analysis and factorial method was used to analyze the significance of each index， with the mechanical properties， environmental impact and economy of LC-HPRAC materials taken into consideration comprehensively. The results showed that the carbon emission of Portland cement-based plain concrete was 426 kg CO₂-eq/m³， and the carbon emission of LC-HPRAC was only 42% of that of plain concrete. The environmental impact of LC-HPRAC mainly came from alkali-activator， steel fiber and slag in the raw material production stage， accounting for more than 60% totally. The environmental impact of LC-HPRAC was mainly attributed to the Global Warming Potential， accounting for over 45%， among which， the carbon emission was the main factor. The environmental and economic comprehensive impact indexes of LC-HPRAC were generally positively correlated with the recycled aggregate replacement rate and steel fiber content. When the steel fiber content was 0.5% and recycled aggregate replacement rate was 50%， the environmental and economic comprehensive effect of LC-HPRAC were optimal.
- low-carbon high performance recycled aggregate concrete /
- steel fiber /
- life cycle assessment /
- environment effect /
- cost analysis

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