Mechanical,expansion and rheological properties of circulating fluidized bed fly ash based ecological cement:A critical review

作     者：Wei Zhang Xiaoming Liu Zengqi Zhang Wei Zhang;Xiaoming Liu;Zengqi Zhang

作者机构：State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2022年第29卷第9期

页      面：1670-1682页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52074035 and 52008229) the Key Technologies Research and Develo pment Program,China(No.2020YFB0606200) 

主　　题：circulating fluidized bed fly ash ecological cement expansion durability compensation shrinkage 

摘      要：Circulating fluidized bed fly ash(CFBFA)is a solid waste product from circulating fluidized bed(CFB)boilers in power plants,and the storage of CFBFA is increasingly become an environmental *** scholars have made contributions to improve the resource utilization of ***,ecological cement is prepared by CFBFA,which is more conducive to its large-scale *** recent years,a lot of effort has been paid to improve the properties of ecological cement containing *** this work,the physicochemical properties of CFBFA are introduced,and recent research progress on the mechanical,expansion,and rheological properties of CFBFA based ecological cement(CEC)is extensively *** problem of over-expansion of f-CaO is summarized,which limits the scale application of CFBFA in ecological ***,the challenge for f-CaO in CFBFA to compensate for cement volume shrinkage is proposed,which is beneficial to the utilization of CFBFA in ecological cement,and the reduction of CO_(2) emissions from the cement *** addition,the environmental performance,durability,and economy of CEC should be valued in future research,especially the environmental performance,because the CFBFA contains heavy metals,such as Cr,As,which may pollute groundwater.