DISCUSSION ON MIXTURE RATIO DESIGN METHODS OF SELF-COMPACTING CONCRETE
Now there are two common ratio design methods of self-compacting concrete (SCC). One is the fixed aggregate volume calculation method, and the other is the overall calculation method. To design the SCC with the same design index, big differences exist in the two methods. Then improved overall calculation method is proposed, but the mixture ratio got through it is almost the same as the fixed aggregate volume method. Furthermore, when to design concrete mixture ratio, with the designed strength grade of concrete improved (water to cement ratio reduced), paste volume keeps invariant and the loose piled volume of gravel increases (sand ratio decreases) by the overall calculation method; while the loose piled volume of gravel and the sand ratio keep invariant by the fixed aggregate volume calculation method (including improved overall calculation method), and the above dont match the concrete design theory. Thus, the problems on the design method and the value of design parameters are discussed, and then a more reasonable design concept called fixed gravel volume method is proposed.
SCC mizture ratio design strength grade of concrete
Zeng Li Jiang Rui Jinxiang Zhuang
State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,43 State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University, Wuhan,4 State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University, Wuhan,
国际会议
长沙
英文
145-151
2009-06-05（万方平台首次上网日期，不代表论文的发表时间）