|本期目录/Table of Contents|

[1]肖建庄,关湘烁,王佃超,等.再生混凝土碳排放因子研究[J].建筑科学与工程学报,2023,40(04):1-11.[doi:10.19815/j.jace.2022.07032]
　XIAO Jianzhuang,GUAN Xiangshuo,WANG Dianchao,et al.Researches on carbon emission factors of recycled concrete[J].Journal of Architecture and Civil Engineering,2023,40(04):1-11.[doi:10.19815/j.jace.2022.07032]
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再生混凝土碳排放因子研究(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
40卷
期数:
2023年04期
页码:
1-11
栏目:
建筑材料
出版日期:
2023-07-10

文章信息/Info

Title:
Researches on carbon emission factors of recycled concrete
文章编号:
1673-2049(2023)04-0001-11
作者:
肖建庄1,关湘烁1,王佃超1,王 军2
(1. 同济大学 建筑工程系,上海 200092; 2. 中建西部建设股份有限公司,四川 成都 610017)
Author(s):
XIAO Jianzhuang1, GUAN Xiangshuo1, WANG Dianchao1, WANG Jun2
(1. Department of Structural Engineering, Tongji University, Shanghai 200092, China; 2. China West Construction Group Co., Ltd, Chengdu 610017, Sichuan, China)
关键词:
再生粗骨料混凝土;  再生细骨料混凝土;  再生粉混凝土;  碳排放因子;  示范工程
Keywords:
recycled coarse aggregate concrete;  recycled fine aggregate concrete;  recycled powder concrete;  carbon emission factor;  demonstration project
分类号:
TU528.01
DOI:
10.19815/j.jace.2022.07032
文献标志码:
A
摘要:
定义了再生混凝土碳排放因子的计算边界,提出了再生粗骨料混凝土(RAC)、再生细骨料混凝土(RFC)、再生粉混凝土(RPC)碳排放因子的计算方法,分析了再生材料取代率与混凝土强度等级对再生混凝土碳排放因子的影响。通过实际案例计算了再生粗骨料混凝土建筑相较于普通混凝土建筑减少的碳排放量,分析了再生混凝土结构的碳排放优势。结果表明:随着再生粗骨料取代率升高,RAC碳排放因子可降低15%; 随着再生细骨料取代率升高,RFC碳排放因子可降低8.6%; 随着再生粉取代率升高,RPC碳排放因子可降低26.3%; 强度C45的RAC碳排放因子高于强度C30的RAC可达11.7%; 强度C45的RFC碳排放因子高于强度C40的RFC可达39%; 强度C45的RPC碳排放因子高于强度C30的RPC可达10.9%; 随着混凝土强度等级从C30提高到C45,碳排放因子逐渐提高; 在“建材生产+结构运营”边界内,RAC建筑相较于普通混凝土建筑减少了1.75%的碳排放,就拆除项目而言,避免建筑固废运输与填埋减少的碳排放是“建材生产+结构运营”边界内减少碳排放的3.32倍,这是再生混凝土建筑为环境带来有利影响的主要原因。
Abstract:
The accounting boundary of carbon emission factors of recycled concrete was defined, the calculation methods of carbon emission factors of recycled coarse aggregate concrete(RAC), recycled fine aggregate concrete(RFC)and recycled powder concrete(RPC)were proposed, and the influences of recycled material replacement percentages and concrete strength grades on carbon emission factors of recycled concrete were analyzed. Based on an actual case, the carbon emission reduction of recycled coarse aggregate concrete buildings compared with conventional concrete buildings was calculated, and the carbon emission advantages of recycled structure were analyzed. The results show that with the increase of recycled coarse aggregate replacement rates, the RAC carbon emission factors can be reduced by 15%. With the increase of recycled fine aggregate replacement rates, RFC carbon emission factors can be reduced by 8.6%. With the increase of recycled powder replacement rates, the carbon emission factors of RPC can be reduced by 26.3%. The carbon emission factor of C45 RAC is 11.7% higher than that of C30 RAC, the carbon emission factor of C45 RFC is 39% higher than that of C40 RFC, and the carbon emission factor of C45 RPC is 10.9% higher than that of C30 RPC. As the strength grades of concrete increase from C30 to C45, the carbon emission factors gradually increase. Within the boundary of “building material production + structural operation”, the RAC building reduces carbon emissions by 1.75% compared with the conventional concrete building. As far as the demolition project is concerned, the carbon emission reduced by avoiding the transportation and landfill of demolition waste is 3.32 times as much as the carbon emission reduced within the boundary of “building material production + structural operation”, which is the main reason for the favorable impact of recycled buildings on the environment.

参考文献/References:

[1] LIU Z,DENG Z,HE G,et al.Challenges and opportunities for carbon neutrality in China[J].Nature Reviews Earth & Environment,2021,3(2):141-155.
[2]XU X Y,WANG Y,RUAN Y J,et al.Integrated energy planning for near-zero carbon emission demonstration district in urban areas:a case study of Meishan district in Ningbo,China[J].Energies,2022,15(3):874.
[3]龙惟定,梁 浩.我国城市建筑碳达峰与碳中和路径探讨[J].暖通空调,2021,51(4):1-17.
LONG Weiding,LIANG Hao.Discussion on paths of carbon peak and carbon neutrality of urban buildings in China[J].Heating Ventilating & Air Conditioning,2021,51(4):1-17.
[4]吴文伶,刘 星,冯建华,等.建筑工程施工机械碳排放研究[J].施工技术(中英文),2021,50(13):118-122.
WU Wenling,LIU Xing,FENG Jianhua,et al.Research on carbon emission of construction machinery in construction engineering[J].Construction Technology,2021,50(13):118-122.
[5]张 涛,姜裕华,黄有亮,等.建筑中常用的能源与材料的碳排放因子[J].中国建设信息,2010(23):58-59.
ZHANG Tao,JIANG Yuhua,HUANG Youliang,et al.Carbon emission factors of commonly used energy and materials in buildings[J].Informatization of China Construction,2010(23):58-59.
[6]刘立涛,张 艳,沈 镭,等.水泥生产的碳排放因子研究进展[J].资源科学,2014,36(1):110-119.
LIU Litao,ZHANG Yan,SHEN Lei,et al.A review of cement production carbon emission factors:progress and prospects[J].Resources Science,2014,36(1):110-119.
[7]DIXIT M K,CULP C H,FERNANDEZ-SOLIS J L.Calculating primary energy and carbon emission factors for the United States' energy sectors[J].RSC Advances,2014,4(97):54200-54216.
[8]IPCC.2006 IPCC guidelines for national greenhouse gas inventories[M].London:IPCC,2006.
[9]SONG R P,YANG S,SUN M.GHG protocol tool for energy consumption in China(Version 1.0)[R].Beijing:World Resources Institute,2011.
[10]SONG R P,YANG S,SUN M.GHG protocol tool for energy consumption in China(Version 2.0)[R].Beijing:World Resources Institute,2012.
[11]SONG R P,YANG S,SUN M.GHG protocol tool for energy consumption in China(Version 2.1)[R].Beijing:World Resources Institute,2013.
[12]XIAO J Z.Recycled aggregate concrete[M].Berlin:Springer,2017.
[13]HUANG K W,LI A,XIA B,et al.Prediction on CO2 uptake of recycled aggregate concrete[J].Frontiers of Structural and Civil Engineering,2020,14(3):746-759.
[14]LIU Q,XIAO J Z,SUN Z H.Experimental study on the failure mechanism of recycled concrete[J].Cement and Concrete Research,2011,41(10):1050-1057.
[15]EVANGELISTA L,DE BRITO J.Durability performance of concrete made with fine recycled concrete aggregates[J].Cement & Concrete Composites,2010,32(1):9-14.
[16]肖建庄,雷 斌.再生混凝土碳化模型与结构耐久性设计[J].建筑科学与工程学报,2008,25(3):66-72.
XIAO Jianzhuang,LEI Bin.Carbonation model and structural durability design for recycled concrete[J].Journal of Architecture and Civil Engineering,2008,25(3):66-72.
[17]XIAO J Z,XIAO Y,LIU Y,et al.Carbon emission analyses of concretes made with recycled materials considering CO2 uptake through carbonation absorption[J].Structural Concrete,2021,22(S1):E58-E73.
[18]李春晖.复掺矿物掺合料混凝土碳化性能研究[D].西安:西安建筑科技大学,2009.
LI Chunhui.Researches on carbonation of concrete with multi-mineral admixtures[D].Xi'an:Xi'an University of Architecture and Technology,2009.
[19]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.
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.
[20]建筑碳排放计算标准:GB/T 51366—2019[S].北京:中国建筑工业出版社,2019.
Standard for building carbon emission calculation:GB/T 51366—2019[S].Beijing:China Architecture & Building Press,2019.
[21]综合能耗计算通则:GB/T 2589—2020[S].北京:中国标准出版社,2020.
General rules for calculation of the comprehensive energy consumption:GB/T 2589—2020[S].Beijing:Standards Press of China,2020.
[22]谭艺帅,彭有开,吴 徽.不同再生细骨料取代率下的再生混凝土单轴受压本构关系[J].混凝土,2019(3):65-70.
TAN Yishuai,PENG Youkai,WU Hui.Constitutive relationship of recycled concrete with different recycled fine aggregate replacement rates under uniaxial compression[J].Concrete,2019(3):65-70.
[23]段珍华,侯少丹,潘智生,等.再生细骨料混凝土流变性及其对强度和耐久性的影响[J].建筑结构学报,2020,41(增2):420-426.
DUAN Zhenhua,HOU Shaodan,PAN Zhisheng,et al.Rheology of recycled fine aggregate concrete and its effect on strength and durability[J].Journal of Building Structures,2020,41(S2):420-426.
[24]HOSSAIN M U,POON C S,LO I M C,et al.Comparative environmental evaluation of aggregate production from recycled waste materials and virgin sources by LCA[J].Resources,Conservation and Recycling,2016,109:67-77.
[25]普通混凝土配合比设计规程:JGJ 55—2011[S].北京:中国建筑工业出版社,2011.
Specification for mix proportion design of ordinary concrete:JGJ 55—2011[S].Beijing:China Architecture & Building Press,2011.
[26]XIAO J Z,WANG C H,DING T,et al.A recycled aggregate concrete high-rise building:structural performance and embodied carbon footprint[J].Journal of Cleaner Production,2018,199:868-881.
[27]DING T,XIAO J Z,TAM V W Y.A closed-loop life cycle assessment of recycled aggregate concrete utilization in China[J].Waste Management,2016,56:367-375.

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备注/Memo

备注/Memo:
收稿日期:2022-07-09
基金项目:中建西部建设科技研发计划项目(ZJXJ-2022-11)
作者简介:肖建庄(1968-),男,工学博士,教授,博士生导师,E-mail:jzx@mail.tongji.edu.cn。
更新日期/Last Update: 2023-07-01