摘要
通过冬季室内外养护环境的混凝土试件长龄期强度的对比,分析粉煤灰混凝土水化热、养护温度、粉煤灰掺量、试件体积对混凝土强度的影响。结果表明,冬季室外养护混凝土强度较室内温暖条件养护的混凝土构件强度大幅降低,但粉煤灰混凝土水化热的缓释特点和一定的试件体积有利于保持试件必要的养护温度,提高强度。
This paper compared long-age strength of concrete cured under outdoor environment and indoor environment in winter, then analyzed the influence of hydration heat, curing temperature, fly ash content and specimen size on concrete strength. The result shows that the strength of specimens cured outdoor has a distinct decrease compared to that cured indoor. The slow-release characteristic of hydration heat of fly ash concrete and certain specimen size are beneficial for maintaining necessary temperature and improve the strength for the specimens cured in low temperature.
出处
《建筑技术》
2013年第8期705-709,共5页
Architecture Technology
基金
工程结构与新材料北京市高校工程研究中心(PXM2013-014210-000155)
关键词
粉煤灰混凝土
冬季养护
水化热
强度
试件尺寸
fly ash concrete
curing in winter
hydration heat
strength
specimen size
