摘要
采用压汞法(MIP)测试了掺加橡胶集料的水泥砂浆的孔径分布和孔隙率,研究了橡胶集料对水泥砂浆孔结构的影响.通过橡胶集料含量与孔隙率和含气量之间的关系,分析了橡胶集料的引气作用.测试结果表明,掺入橡胶集料后,砂浆的最可几孔径、平均孔径、中值孔径以及孔隙率均增大,但砂浆的孔径分布趋于均匀.橡胶集料的引气作用随其含量的增加而增强.
In this paper, mercury intrusion porosimeter （MIP）was used to test pore size distribution and porosity of the mortar incorporating crumb rubber. The effect of crumb rubber on pore structure of mortar was investigated. The air-entraining ability of crumb rubber was analyzed based on the relationship between crumb rubber content and porosity and air content. The test results show that mode pore diameter, mean pore diameter, median pore diameter and porosity of the mortar increase after crumb rubber is incorporated, but the distribution of pore size reveals a uniform distribution tendency. The air-entraining ability of crumb rubber is enhanced as its content increases.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2011年第12期1083-1087,共5页
Journal of Tianjin University(Science and Technology)
基金
国家自然科学基金资助项目(50878142)
关键词
砂浆
橡胶集料
孔结构
孔径分布
孔隙率
mortar
crumb rubber
pore structure
pore size distribution
porosity
