Effect of Limestone Powder on Microstructure of Concrete

作     者：刘数华 LIU Shuhua1, YAN Peiyu2 (1. State Key Laboratory of Water Resource and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;2. Department of Civil Engineering, Tsinghua University, Beijing 100084, China)

作者机构：State Key Laboratory of Water Resource and Hydropower Engineering Science Wuhan University 

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：2010年第25卷第2期

页      面：328-331页

核心收录：

学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0702[理学-物理学] 

基　　金：Funded by the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 200804861060) 

主　　题：concrete limestone powder microstructure filling effect hydration characteristic 

摘      要：The effect of limestone powder on microstructure of concrete was studied by using mercury intrusion porosimetry （MIP）, backscattering scanning electron（BSE）, scanning electron mi- croscopy （SEM） and X-ray diffraction （XRD） techniques. The experimental results show that the compressive strength of concrete containing 100 kg/m3 limestone powder can meet the strength requirement. Limestone powder has not pozzolanic activity; it is still unhydrated at the age of 28 days. But its filling effect can make the paste matrix and the interfacial transition zone between matrix and aggregate denser, which will improve the performance of concrete.