[1]肖建庄,黎骜,丁陶.再生混凝土生命周期CO2排放评价[J].东南大学学报(自然科学版),2016,46(5):1088-1092.[doi:10.3969/j.issn.1001-0505.2016.05.032]
 Xiao Jianzhuang,Li Ao,Ding Tao.Life cycle assessment on CO2 emission for recycled aggregate concrete[J].Journal of Southeast University (Natural Science Edition),2016,46(5):1088-1092.[doi:10.3969/j.issn.1001-0505.2016.05.032]
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再生混凝土生命周期CO2排放评价()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第5期
页码:
1088-1092
栏目:
材料科学与工程
出版日期:
2016-09-20

文章信息/Info

Title:
Life cycle assessment on CO2 emission for recycled aggregate concrete
作者:
肖建庄黎骜丁陶
同济大学建筑工程系, 上海 200092; 同济大学先进土木工程材料教育部重点实验室, 上海 200092
Author(s):
Xiao Jianzhuang Li Ao Ding Tao
Department of Structural Engineering, Tongji University, Shanghai 200092, China
Key Laboratory of Advanced Civiling Engineering Materials of Ministry of Education, Tongji University, Shanghai 200092, China
关键词:
再生混凝土 CO2排放量 生命周期评价 环境价值
Keywords:
recycled aggregate concrete CO2 emission life cycle assessment environmental value
分类号:
TU528.01
DOI:
10.3969/j.issn.1001-0505.2016.05.032
摘要:
为评价再生混凝土CO2的排放量,构建了再生混凝土CO2排放量化模型.运用生命周期评价技术,对原材料生产、运输、再生混凝土制备、施工建造、拆除废弃等阶段建立了CO2排放量的计算方法,并计入碳化作用影响,提出了再生混凝土碳化-吸收模型.通过收集各阶段基础数据,得到了1 m3的C30再生混凝土CO2排放量.最后,将排放量转化为环境成本和等量吸收所需的绿化面积或树木棵数,进行环境影响评价.结果表明,1 m3 C30的再生混凝土生命周期CO2排放量随再生粗骨料取代率的提高而降低,当取代率为30%,50%,70%,100%时,CO2排放量分别为314.2,310.9,307.6,301.4 kg;CO2排放量随取代率提高而降低的主要原因为再生粗骨料运输和混凝土碳化作用;对比普通混凝土,再生混凝土在CO2减排上具有更优的环境价值.
Abstract:
In order to assess CO2 emission of recycled aggregate concrete(RAC), a quantitative model for CO2 emission of RAC was proposed. By applying life cycle assessment(LCA)technology, the computational methods for CO2 emission at the stages of raw material production, transport, preparation of RAC, construction and demolition to abandon were described. The influence of carbonation was considered and a model of carbonation-absorption for RAC was also proposed. By collecting the basic data at every stage, the CO2 emission of 1 m3 C30 RAC was obtained. Finally, by converting CO2emission to environmental cost and the requirement of green areas or trees with same amount absorbed, the environmental impact assessment was conducted. The results show that the CO2 emission of 1 m3 C30 RAC decreases with the increase of the replacement ratio of recycled coarse aggregate(RCA). The CO2 emissions are 314.2, 310.9, 307.6, 301.4 kg when the replacement ratios are 30%, 50%, 70%, 100%, respectively. Transport of RCA and carbonation is the main reason for the reduction of CO2 emission with the increase of the replacement ratio. Compared with natural concrete, RAC is superior to environmental values in the reduction of CO2 emission.

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备注/Memo

备注/Memo:
收稿日期: 2016-01-21.
作者简介: 肖建庄(1968—),男,博士,教授,博士生导师,jzx@tongji.edu.cn.
基金项目: 国家杰出青年科学基金资助项目(51325802).
引用本文: 肖建庄,黎骜,丁陶.再生混凝土生命周期CO2排放评价[J].东南大学学报(自然科学版),2016,46(5):1088-1092. DOI:10.3969/j.issn.1001-0505.2016.05.032.
更新日期/Last Update: 2016-09-20