Grey Connection Analysis between Cement Particle Size Distribution and Compressive Strength

摘要

This paper studied the effect of triethanolamine(TEA), glycerin(PG) and lignosulphonate(CLS), used as grinding aids respectively, on cement particle size distribution and mortar strength. Grey connection analysis was made between cement particle size distribution and compressive strength. Results showed that TEA and CLS significantly increased the volume proportion of particles with diameter less than 10μm and decreased the volume proportion of particles with diameter larger than 30μm. PG showed opposite effect. According to grey connection index, cement particles with diameter ranging from 10μm to 20μm played a decisive role in the early compressive strength, and particles with diameter between 20μm and 30μm took a major effect on the late compressive strength.