道面混凝土气孔结构与抗冻性的研究
A Study on Air Void Structure and Frost Resistance for Pavement Concrete
岑国平 1蒋小伟 2王金华 3洪刚1
作者信息
- 1. 空军工程大学工程学院 西安市710038
- 2. 空军第五空防工程处 南京市210011
- 3. 沈阳军区空军勘察设计所 沈阳市110015
- 折叠
摘要
混凝土中的气孔结构对抗冻性有重要影响.通过系统地试验,分析了道面混凝土中含气量与气泡间距系数、抗冻性之间的关系.结果表明,对于干硬性的道面混凝土:当含气量大于3％,气泡间距系数小于450 μm时,可达到300次抗冻要求；当含气量在4％左右,气泡间距系数小于350 μm时,可达到500次抗冻要求.
Abstract
Air void structure of concrete affect the frost resistance. By systemic experiments, the relations of air content, spacing coefficient of air void and frost resistance are analyzed. The results indicate that for non-plastic pavement concrete, when air content is more than 3 % or spacing coefficient of air void is less than 450 μm,' freeze-thaw number is more than 300; when air content is about 4% or spacing coefficient is less than 350 μm, freeze-thaw number is more than 500.
关键词
道面/混凝土/气孔结构/抗冻性Key words
pavement/concrete/air void structure/frost resistance引用本文复制引用
出版年
2012
NETL
NSTL
维普
万方数据