Analysis of Grey Connection between Particle Size Distribution of Ground Marble and Rheological Property of Cement-Ground Marble Pastes
XIAO Jia
HE Yanqi
WANG Dafu
TIAN Chengyu
XU Yong
Abstract：The relation of shear stress and plastic viscosity with shear rate of cement-ground marble pastes were studied by a rotational viscometer(mode Rheolab QC).And the Herschel-Bulkley model was introduced to fit the yield stress,consistency coefficient and rheological index of cement-ground marble pastes,the thixotropy was characterized by thixotropic loop area.And the relevance of particle size distribution of cement-ground marble pastes was analyzed using grey connection theory.The results show that with the increase of ground marble content,slurry fluidity of the cement-ground marble pastes increases,and the degree of shear thinning decreases.The mass fraction of ground marble particles in the size ranging from 0-10μm has positive corelation with yield stress,apparent viscosity and thixotropy while if particles ＞10 μm it has a negative corelation and 5-10 μm is the key factor.The mass fraction of ground marble particles in the size ＞ 10 μm has positive corelation with rheological index while if particle sizes are 0-10μm it has a negative corelation and particles in the sizes of 20-50 μm is the key factor.
Keywords：rheological propertyground marblegrey connection anaysisparticle size distribution
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 83-87 )