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  5. Effect of Calcium Formate on Properties of Cement Pastes Containing Fly Ash

Effect of Calcium Formate on Properties of Cement Pastes Containing Fly Ash

来源 :The 14th International Congress on the Chemistry of Cement ( | 被引量 : 0次 | 上传用户：edward109
【摘 要】
：
The effect of calcium formate on water requirement of normal consistency, compressive strength, drying shrinkage and rate of mass loss of cement pastes containing fly ash were studied.The influence of
【作 者】
：
WANG Aiguo SUN Daosheng XU Wei DENG Min LIU Kaiwei ZHOU Tingting 
【机 构】
：
Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China
【出 处】
：
The 14th International Congress on the Chemistry of Cement (
【发表日期】
：
2015年8期
【关键词】
：
Calcium formate Cement paste Fly ash Drying shrinkage Compressive strength 
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　　The effect of calcium formate on water requirement of normal consistency, compressive strength, drying shrinkage and rate of mass loss of cement pastes containing fly ash were studied.The influence of calcium formate on pore structure and content of non-evaporable water of cement pastes containing fly ash were investigated through mercury intrusion porosimetry (MIP) and combustion method.The results showed that calcium formate has water reducing effect, and accelerations the early hydration of cement pastes containing fly ash and the refinement of pore structure, it can also decrease the rate of mass lose of cement pastes under drying condition.Calcium formate can improve the early compressive strength of cement pastes containing fly ash obviously and increase the drying shrinkage.However, increase of fly ash replacement can reduce the effect of calcium formate on drying shrinkage of cement pastes containing fly ash.
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