The Influence of Limestone Powder and Metakaolin Co-Blending on the Hydration Process and Mechanical Properties of Q-Phase Cement  

作　　者：XIONG Xuan HE Yongjia LÜLinnü MA Jie WANG Fazhou 熊旋;何永佳;吕林女

机构地区：[1]State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China [2]School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China [3]Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics,School of Science,Wuhan University of Technology,Wuhan 430070,China [4]China Railway Design Corporation,Tianjin 300250,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2024年第5期1169-1176,共8页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.52172026);the Science and Technology Development Project of China Railway Design Corporation(Nos.2023A0226407 and 2023B03040003)。

摘　　要：A ternary system comprising Ca_(20)Al_(26)Mg_(3)Si_(3)O_(68)(Q-phase),limestone,and metakaolin is proposed,and its hydration behavior,hydration product phases,microstructure,and mechanical properties are investigated and compared with pure Q-phase cement.The results indicate that the ternary system exhibits exceptional and sustained compressive strength even under a 40℃environment,significantly outperforming pure Q-phase.The mechanism lies in that metakaolin effectively inhibits the transformation of metastable phase.Meanwhile,the interactions among Q-phase,limestone,and metakaolin further enhance the cementitious performance.The ternary system effectively addresses potential issues of strength loss in Q-phase cement application,and as a low-carbon cementitious material system,it holds promising potential applications.

关 键 词：Q-phase LIMESTONE METAKAOLIN HYDRATION compressive strength 

分 类 号：TQ172.1[化学工程—水泥工业]