Effect of Grain Size of CaCO_3 and SiO_2 on the Formation of C_3S Under Different Conditions

作     者：卢忠远 LU Zhongyuan1,2,XU Xun1,2,XIAO Xiangqi1,2 (1.School of Material Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China;2.Key Laboratory for Building Materials of Sichuan Province,Mianyang 621010,China)

作者机构：School of Material Science and EngineeringSouthwest University of Science and Technology 

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：2007年第22卷第3期

页      面：533-536页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：the Science Fund Project(No.04JY029-060-1) Key Subject Construction Project of Material Science of Sichuan Province of China and National Support Project(No.2006BAF02A24) 

主　　题：grain size C3S rapid sintering ZnO 

摘      要：The effect of grain size of CaCO3 and SiO2 on the formation of C3S under various conditions, such as rapid heating rate（800 ℃/min）, normal heating rate（30 ℃/min） and in the presence or absence of ZnO, was studied. The results show that the decomposition temperature of CaCO3, the temperature of appearance of liquid phase and the f-CaO content descend when the grain size of CaCO3 and SiO2 becomes smaller, which attributes to the reactive activity enhancement of powders due to the decrease of the particle size. When the grain size of CaCO3 and SiO2 is below 1 μm, the rate of the formation of C3S is greatly raised. A rapid sintering rate and the presence of ZnO have an important effect on the formation of C3S and can lower the temperature of the formation of C3S by about 50 ℃.