CRACKING TEST AND ANALYSIS OF SELF-COMPACTING CONCRETE AT EARLY AGE
The paper discusses the cracking sensitivity of self-compacting concrete through ring-experiment at 20℃,50％ relative humidity environment. The influence of cementitious materials such as fly ash, silica fume and slag, on the cracking properties of self-compacting concrete is analyzed, therefore the design of self-compacting concrete is optimized according to cracking sensitivity results. The hydration heat of cementitious materials of self-compacting concrete is surveyed. The compressive strength and split strength of self-compacting concrete at early age also is discussed and the influence of aluminate expansion agent and polypropylene fibers on them is analyzed. The experiment results of ring specimen that the good proportion of aluminate expansion agent and polypropylene fiber in self-compacting concrete can prolong the cracking time and decrease the cracking sensitivity.
self-compacting concrete cracking fly ash ezpand agent fiber early age
Jia Chun Wang YongZhi Wang
Department of civil engineering, Xiamen University of echnology, Xiamen China Department of civil en Xiamen Academy of Building research group, Xiamen China
国际会议
长沙
英文
410-415
2009-06-05（万方平台首次上网日期，不代表论文的发表时间）