摘要
研究了页岩陶粒经不同程度预湿处理后混凝土强度变化规律,并利用扫描电镜对页岩陶粒混凝土集料与水泥石界面区及水泥石基体的显微结构进行了研究。研究结果表明:随着页岩陶粒预湿程度的增加,混凝土早期强度降低幅度较后期强度大,而强度增长率明显增大。探讨了不同龄期混凝土显微结构的孔隙特征,从微观结构揭示混凝土强度变化规律。
The change of strength of shale ceramsite concrete was researched when shale ceramsite was pre-wetted by means of the distinct degree. Cement paste and interracial zone between aggregate and mortar for concrete were investigated through the method of SEM. The results show that, with pre-wetting degree increasing, early strength descent scope is greater than later strength, the strength growth rate obviously broadens. The pores characteristic of concrete in different ages and the change of strength of shale ceramsite concrete were studied.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2005年第10期3-6,30,共5页
Journal of Materials Engineering
基金
建设部专项基金(01303200)
关键词
页岩陶粒
预湿处理
显微结构
强度
界面区
shale ceramsite
pre wetting handle
microstructure
strength
interracial zone
