摘要
以自密实混凝土应用技术规程[1]为基础,采用先设计后调整的方法研究砂的类别及砂率、用水量、减水剂种类及石子粒径大小对自密实混凝土坍落扩展度,通过V型漏斗的时间,通过U型箱等的工作性能以及7 d和28 d强度的影响,经过实验反复优化,最终配制出机制砂自密实混凝土。
Based on the technical specification of self -compacted concrete, the effect of the sand type, sand ratio, water content, water reducing agent type and gravel size on the properties of self - compacted concrete are studied, including slump, the time to pass through the V-shaped funnel, the ca-pacity to pass through U-shaped box of all the Work perform-ance, and the 7 days and 28 days strength. The self-compac-ted concrete was designed first and was optimized after several experiments. Then a rational mix proportion for the self-com-pacted concrete using manufactured sand is obtained.
出处
《四川建材》
2013年第6期43-46,共4页
Sichuan Building Materials
基金
2012贵州师范大学大学生科研项目
关键词
机制砂
自密实混凝土
工作性能
配合比设计
Mechanism of Sand
Elf-Compacting Con-crete
Work Performance
7 and 28 Days Strength
Design ofMix Proportion
