电阻率法研究磷及石灰对水泥凝结硬化的影响  

Effects of Phosphate and Lime on the Setting and Hardening of Cement Using an Electrical Resistivity Method

作　　者：周明凯[1] 周丽娜[1] 魏小胜[2] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070 [2]华中科技大学土木工程与力学学院,武汉430074

出　　处：《武汉理工大学学报》2007年第8期37-40,共4页Journal of Wuhan University of Technology

基　　金：教育部科学技术研究项目(105125)

摘　　要：用非接触式电阻率测试仪研究了不同含量的可溶磷及石灰对水泥早期水化过程中电阻率的影响。结果表明:可溶磷使得水泥早期的电阻率降低,水化进程推迟,且随着可溶磷含量的增加,电阻率呈逐步降低趋势;单独添加石灰对水泥早期水化影响较小;石灰中和可溶磷后可补偿可溶磷的对水化的延期危害,其电导率随时间变化规律与未添加磷、石灰的水泥基本一致。The influence of different contents of phosphate and lime on hydration of Portland cement has been studied using a non contact electrical resistivity meter.The results show that the bulk resistivity curve of the paste with phosphate is delayed in early period,and resistivity declines as the contents of the phosphate increase.The lime has little effect on the hydration of cement but has an effect to react with the phosphate and offset the retardation of phosphate.The cement added with lime and phosphate has almost the same rule of resistivity change as the cement without lime and phosphate.

关 键 词：磷 水化 电阻率 凝结时间 

分 类 号：X781[环境科学与工程—环境工程]