SiO_2气凝胶对泡沫混凝土性能的影响  

Effect of silica aerogel on the performance of foamed concrete

作　　者：赵同义 张启志 ZHAO Tongyi;ZHANG Qizhi(School of Architectural Engineering,Huanghuai University,Zhumadian 463000,China)

机构地区：[1]黄淮学院建筑工程学院,河南驻马店463000

出　　处：《新型建筑材料》2018年第9期144-147,154,共5页New Building Materials

基　　金：应用型技术大学建筑工程专业实践性教学模式研究项目(CIL1602)

摘　　要：研究了SiO_2气凝胶掺量对泡沫混凝土性能的影响。结果表明:泡沫混凝土的体积密度随着SiO_2气凝胶掺量的增加逐渐降低;SiO_2气凝胶的掺入能够降低泡沫混凝土的导热系数,显著改善泡沫混凝土的热工性能;泡沫混凝土的抗压强度随着气凝胶掺量的增加总体呈下降趋势,但是当气凝胶掺量较小时,抗压强度略有提高;泡沫混凝土吸水率随气凝胶掺量的增加先减小后增大,软化系数与吸水率有很好的线性相关性。The effect of silica aerogel content on the performance of foamed concrete was investigated. The results showed that the dry density of foamed concrete gradually decreased with the increase of the silica aerogel content. The addition of silica aerogel could reduce the thermal conductivity of foam concrete and significantly improved the thermal performance of foam concrete. The compressive strength of foamed concrete decreased with the increase of the silica aerogel content,but when the aerogel content was small,the compressive strength increased slightly. The water absorption of foamed concrete decreased at first and then increased as the increase of silica aerogel content,and the softening coefficient and water absorption had a good linear correlation.

关 键 词：SIO2气凝胶 泡沫混凝土 抗压强度 导热系数 吸水率 

分 类 号：TU528.2[建筑科学—建筑技术科学]