橡胶集料对水泥砂浆孔结构的影响.pdf

《天津大学学报（自然科学版）》[ISSN:0493—2137/CN:12—1127/N]期数: 2011年12 页码: 1083-1087 栏目: 建筑工程 出版日期: 2011-12-15
文章信息/Info
Title: Effect of Crumb Rubber on Pore Structure of Cement Mortar
作者: 杨林虎1; 朱 涵1; 2; 张亚梅3
1. 天津大学建筑工程学院，天津 300072；2. 天津大学土木工程结构及新材料天津市重点实验室，天津 300072；3. 东南大学材料科学与工程系，南京 210096
Author(s): YANG Lin-hu1; ZHU Han1; 2; ZHANG Ya-mei3
1. School of Civil Engineering，Tianjin University，Tianjin 300072，China； 2. Tianjin Key Laboratory of Civil Engineering Structure & New Materials，Tianjin University，Tianjin 300072，China；3. Department of Materials Science and Engineering，Southeast University，Nanjing 210096，China
关键词: 砂浆; 橡胶集料; 孔结构; 孔径分布; 孔隙率
Keywords: mortar; crumb rubber; pore structure; pore size distribution; porosity
分类号: TU528.041
DOI: -
文献标识码: A
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．
Abstract: 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 poros-ity 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.