Preparation and characterization of high porosity cement-based foam material

被引：103
|
作者：
Sang, Guochen [1 ]
Zhu, Yiyun [1 ]
Yang, Gang [1 ]
Zhang, Haobo [1 ]
机构：
[1] Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2015年 / 91卷
基金：
中国国家自然科学基金;
关键词：
Cement-based foams; Mechanical air-entraining method; Pore structure; Porosity; Thermal conductivity; WATER-RETENTION; CONCRETE; MORPHOLOGY; AGENT;
D O I：
10.1016/j.conbuildmat.2015.05.032
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
High porosity cement-based foam materials were prepared through physical air-entraining method and the pore structure and the properties of materials were characterized. The results show that water-cement ratio and Hydroxypropyl Methyl Cellulose (HPMC) content have crucial influence on material properties. When the water-cement ratio was 0.9 and the content of HPMC was 0.4%, the cement-based foam material with the porosity of 94.33% and thermal conductivity value of 0.049 W/(m K) could be obtained. The formation mechanism of pore structure was analyzed that water-cement ratio and HPMC content affect the bubble film toughness which influence on material properties. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：133 / 137
页数：5
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