Preparation and Properties of Nano C-A-S-H Early Strength Agent
This article synthesized a novel nano C-A-S-H early-strength agent using precipitation.Through particle size,SEM,and compressive strength testing,the effects of different Al/Si ratios on the particle size and microstructure of nano C-A-S-H early strength agent were studied and discussed,and the effect of nano C-A-S-H early strength agent on the setting time of slurry and compressive strength of concrete.The results show that when Al/Si is 0.05,the nano C-A-S-H early strength agent had stronger nucleation effect and dispersion retention ability;nano C-A-S-H early strength agent can significantly shorten the setting time of cement,promote the hydration process,improve the early compressive strength of concrete,and prevent shrinkage in the later compressive strength of concrete.
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