Effects of Modified Expanded Perlite Aggregate and Air Entraining Agent on Properties of Polymer Modified Lightweight Thermal Insulation Mortars

被引：0

作者：

Yue, Xingguo ^{[1
]}

Wang, Peiming ^{[1
]}

Zhang, Guofang ^{[1
]}

机构：

[1] Tongji Univ, Sch Mat Sci & Engn, Inst Cement Based Mat, Key Lab Adv Civil Engn Mat,Minist Educ, Shanghai 200092, Peoples R China

来源：

PROCEEDINGS OF THE 6TH ASIAN SYMPOSIUM ON POLYMERS IN CONCRETE | 2009年

关键词：

expanded vitrified perlite; Hydrophobic-expanded perlite; thermal conductivity; air entraining agent;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Expanded vitrified perlite (EVP) and hydrophobic expanded perlite (HEP) as lightweight aggregate and air entraining agent (AE) were added into mortar to decrease its thermal conductivity. Mixture of powder polymer additive (MPPA) includes redispersible polyethylene vinyl acetate (VAc/E), methyl cellulose (MC) and starch ether (ST) were used as organic binding agent as well as water retention and consistency controlling agent. The results show that the bulk density, thermal conductivity, mechanical properties, dry shrinkage ratio of mortars all decrease with the increase of the mass ratio of aggregate to cement (m(A)/m(C)); and the higher consistency, lower bulk density and thermal conductivity, and reduced dry shrinkage ratio can also be observed by adding AE in mortar at the constant water/cement-ratio, however, worsened mechanical properties of mortar are also observed at the same time

引用

页码：53 / 58

页数：6