轻集料预湿程度对页岩陶粒砼抗冻性的影响  

Influence of Pre-wetting Degree on Frost resistance of Shale Ceramsite Concrete

作　　者：郑秀华[1] 张宝生[1] 

机构地区：[1]哈尔滨工业大学材料学院,哈尔滨150006

出　　处：《武汉理工大学学报》2005年第2期13-16,共4页Journal of Wuhan University of Technology

摘　　要：采用快速冻融试验方法研究轻集料不同预湿程度对页岩陶粒混凝土抗冻性的影响。结果表明 ,预湿程度对标养 2 8d页岩陶粒混凝土的抗冻性有影响 ,随着预湿程度的增加 ,抗冻性有所降低 ,但仍能满足 30 0次冻融循环要求 ;而随着养护龄期的延长 ,预湿程度对页岩陶粒混凝土的抗冻性几乎没有影响。同时对抗冻机理做了初步的探讨。The influence of pre-wetting degree on frost-resistance of shale ceramsite concrete is studied when shale ceramsite is pre-wetted by means of the distinct degree. According to the result, pre-wetting degree of shale ceramsite to some extent effects on frost-resistance of 28 days shale ceramsite concrete with pre-wetting degree increasing, frost-resistance is descent. However, it can also satisfy 300 times freeze-thawing. With prolonging of curing age, pre-wetting degree of shale ceramsite nearly do not influence the frost-resistance of shale ceramsite concrete. It also discussed the theory of frost-resistance.

关 键 词：页岩陶粒 页岩陶粒混凝土 预湿处理 养护龄期 抗冻性 

分 类 号：TU528.2[建筑科学—建筑技术科学]