Study on the Influence of Limestone Powder on Roller Compacted Concrete Performance and Action Mechanism
The influence of limestone powder replacing partial fly ash on RCC performance such as workability, compressive strength, splitting strength, ultimate tension value was studied. Setting time, adiabatic temperature rise, shear strength, permeability and frost resistance performance of RCC with two kinds of limestone powder content were compared, and the action mechanism of limestone powder in RCC was analyzed by some test methods such as SEM, XRD, DSC/TG and MIP. The test results showed that the influence of limestone powder replacing partial fly ash on workability, permeability and the frost resistance of RCC was slight, the setting time of RCC shortened and adiabatic temperature rise reduced, but the mechanics performance of RCC reduced with limestone powder content increasing. Not only the limestone powder could act as filling material, also could accelerate the cement hydration at early age and react with C3A.
limestone powder fly ash roller compacted concrete (RCC) action mechanism
Xiao Kaitao Dong Yun
Yangtze River Scientific Research Institute, Wuhan, Hubei 430010, China Research Center of Water Engineering Safety and Disaster Prevention of Ministry of Water Resources, Wuhan, Hubei 430010, China
国际会议
第五届碾压混凝土坝国际研讨会(The Fifth International Symposium on Roller Compacted Concrete(RCC))
贵阳
英文
467-474
2007-11-02（万方平台首次上网日期，不代表论文的发表时间）