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SiO2气凝胶对泡沫混凝土性能的影响
作者： 赵同义，张启志
（黄淮学院 建筑工程学院，河南 驻马店 463000）
摘要：研究了SiO2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SiO2气凝胶掺量的增加逐渐降低；SiO2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。
关键词：SiO2气凝胶；泡沫混凝土；抗压强度；导热系数；吸水率
中图分类号：TU528.2 文献标识码： 文章编号：1001-702X（2018）09-
Effect of silica aerogel on the performance of foamed concrete
ZHAO Tongyi，ZHANG Qizhi
（School of Architectural Engineering，Huanghuai University，Zhumadian 463000，China）
Abstract：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.
Key words：silica aerogel，foamed concrete，compressive strength，thermal conductivity，water absorption