含气量对粉煤灰混凝土抗冻性能影响的研究  

Research on influence of air content on frost resistance of fly ash concrete

作　　者：班瑾 韩明珍[1] 张晶磊[1] 俞斌[1] 周志云[1] 

机构地区：[1]上海理工大学环境与建筑学院,上海200093

出　　处：《水资源与水工程学报》2014年第1期137-139,共3页Journal of Water Resources and Water Engineering

基　　金：上海市研究生创新基金项目(JWCXSL1302)

摘　　要：采用快速冻融法,控制不同粉煤灰掺量的混凝土的含气量,进行了50次抗冻融循环。研究分析表明:在含气量低于5%的时候,粉煤灰混凝土随着含气量的增大,粉煤灰混凝土抗冻性能大幅提高,接近普通硅酸盐混凝土抗冻性能;含气量大于5%一直到15%左右,粉煤灰混凝土抗冻性能高于普通硅酸盐混凝土。By adopting the quick freezing and thawing method and controling the air content of concrete in different amount of fly ash,the paper carried out 50 times of freeze-thaw cycle. The result shows that with the increase of air content of fly ash concrete,its frost-resistance greatly increase and close to the frost- resistance of silicate cement concrete when air content is lower than 5%; when air content is from 5% to 15%,its frost-resistance is higher than that of silicate cement concrete.

关 键 词：粉煤灰掺量 水冻 含气量 冻融循环 

分 类 号：TU528[建筑科学—建筑技术科学]