Effect of Hydrated Calcium Aluminate Cement on the Chloride Immobilization of Portland Cement Paste

作     者：LU Zhouling TAN Hongbo LIU Xiaohai CHEN Pian WANG Yifan LIANG Wenje LÜ Zhouling;TAN Hongbo;LIU Xiaohai;CHEN Pian;WANG Yifan;LIANG Wenjie

作者机构：State Key Laboratory of Silicate Materials for ArchitecturesWuhan University of TechnologyWuhan 430070China School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2023年第38卷第6期

页      面：1360-1371页

核心收录：

学科分类：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：Funded by the National Natural Science Foundation of China(Nos.52278275 and 52202029) the Major Technical Innovation Project in Hubei Province of China(No.2021BAA060) 

主　　题：hydrated calcium aluminate cement portland cement paste chloride immobilization kuzel's salt pore structure 

摘      要：To improve the efficiency and stability of chloride immobilization of portland cement paste,hydrated calcium aluminate cement(HCAC)prepared by wet grinding of CAC was added into portland cement paste as an *** immobilized chloride ratio(ICR)was evaluated,and the mechanism of chloride immobilization was researched by XRD,DTG,NMR,and MIP *** analysis results demonstrated that HCAC could improve the chloride immobilization capacity of portland cement *** mechanism was attributed to the following aspects:chemical binding capacity was enhanced via producing more Kuzel’s salt;physical adsorption capacity was reduced by decreasing the C-S-H gel;migration resistance was enhanced through refining the pore structure.