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Solidification/stabilization of Pb-contaminated soil by using low-carbon binder derived from dehydrated waste concrete powders and GGBS

文献类型：期刊论文

作者Mu, Fangyuan1,3; Ma, Zihan1,2,4; Lang, Lei1; Zhang, Zhaorong1; Dong, Jiaqi3; Li, Jiang-shan1,2; Ji, Zhiqiang3
刊名DEVELOPMENTS IN THE BUILT ENVIRONMENT
出版日期2024-03-01
卷号17页码:11
关键词Waste concrete powder (WCP) Solidification/stabilization Lead-contaminated soil Microstructure Carbon emission
DOI10.1016/j.dibe.2024.100357
英文摘要The low reactivity and high stability of waste concrete powder (WCP) hinder the promotion of recycled binder applications with WCP addition. This study provides an innovative utilization strategy for thermal-modified WCP (TMWCP) recycling as an environmentally friendly solidification/stabilization (S/S) binder material for Pb-contaminated soil by adding ground granulated blast furnace slag (GGBS). The S/S treated soils underwent performance evaluations including unconfined compressive strength and leaching tests. Furthermore, the X-ray diffraction, scanning electron microscopy, and mercury intrusion porosimetry tests were conducted to elucidate the underlying mechanisms. The results show that at an optimal heat treatment temperature of 600 degrees C for WCP, the S/S treated soil achieved a compressive strength of 4.2 MPa after 28 d of curing. Additionally, the optimum mixture ratio of TMWCP and GGBS was 9:1. It was found that the novel binder was much superior to OPC in terms of Pb immobilization and carbon emission reduction. When the dosage of the formed binder is twice that of OPC, it can compensate for the lack of strength in S/S treated Pb-contaminated soil.
资助项目National Natural Science Foundation of China[42177163] ; National Natural Science Foundation of China[42107185] ; National Natural Science Foundation of China[42071080] ; China Postdoctoral Science Foundation[2022M723347]
WOS研究方向Construction & Building Technology ; Engineering
语种英语
WOS记录号WOS:001198336500001
出版者ELSEVIER
源URL[http://119.78.100.198/handle/2S6PX9GI/40917]  
专题中科院武汉岩土力学所
通讯作者Ji, Zhiqiang
作者单位1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
2.HK PolyU Joint Lab Solid Waste Sci, IRSM CAS, Wuhan 430071, Peoples R China
3.Yantai Univ, Dept Civil Engn, Yantai 264005, Peoples R China
4.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China
推荐引用方式
GB/T 7714		 Mu, Fangyuan,Ma, Zihan,Lang, Lei,et al. Solidification/stabilization of Pb-contaminated soil by using low-carbon binder derived from dehydrated waste concrete powders and GGBS[J]. DEVELOPMENTS IN THE BUILT ENVIRONMENT,2024,17:11.
APA Mu, Fangyuan.,Ma, Zihan.,Lang, Lei.,Zhang, Zhaorong.,Dong, Jiaqi.,...&Ji, Zhiqiang.(2024).Solidification/stabilization of Pb-contaminated soil by using low-carbon binder derived from dehydrated waste concrete powders and GGBS.DEVELOPMENTS IN THE BUILT ENVIRONMENT,17,11.
MLA Mu, Fangyuan,et al."Solidification/stabilization of Pb-contaminated soil by using low-carbon binder derived from dehydrated waste concrete powders and GGBS".DEVELOPMENTS IN THE BUILT ENVIRONMENT 17(2024):11.

入库方式： OAI收割

来源：武汉岩土力学研究所

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