复合矿物质超细粉对水泥石自收缩影响效应

Effect of Super Mineral Powder on Autogenous Shrinkage of Cement Paste

摘要: 为了探讨复合矿物质超细粉对水泥石自收缩的影响规律,将硅灰与粉煤灰、磨细矿渣与粉煤灰2种复合掺合料分别加入水泥浆体中,通过改变粉煤灰与硅灰的质量比、粉煤灰与磨细矿渣的质量比,测量其自收缩量,发现粉煤灰能抑制自收缩,磨细矿渣和硅灰促进自收缩,当粉煤灰与硅灰或磨细矿渣复配时,抑制自收缩的作用和硅灰与粉煤灰的质量比或硅灰与磨细矿渣的质量比显著相关.

Abstract: The paper investigates the effect of super mineral powder on Autogenous shrinkage of cement paste. Two multiplex Admixture is mixed into cement paste respectively.Effect of super mineral powder is investgated by estimating the samples of different SF/FA (the ratio of mass of SF to FA) and GBS/FA(the ratio of mass of GBS to FA).It is found that fly Ash(FA) reduce Autogenous shrinkage,silica fume(SF) and ground granulated blast furnace slag(GBS) increases Autogenous shrinkage.Autogenous shrinkage is remarkably rela- tive to SF/FA or GBS/FA remarkable.