Impact of Rice Fermentation Residue and Liquid on Performance of Desulfurization Gypsum
GE Xiangyu
ZHU Zheyu
CAO Jiping
ZHENG Weizhi
WANG Miaomiao
Abstract：Rice fermentation residue and liquid were used in desulfurization gypsum blocks as admixtures.The results indicate that these admixtures effectively increase the standard consistency water requirement,retard setting time and enhance water resistance of desulfurization gypsum.Specifically,after adding 0.9% rice fermentation residue and liquid,the softening coefficients increase by 41.9% and 35.4%,respectively,while the water absorption rates decrease by 57.9% and 57.0% compared to the blank control group.Although rice fermentation residue and liquid negatively affect the mechanical properties of desulfurization gypsum,the degree of mechanical property reduction is comparable to that of common salt based admixtures.Additionally,rice fermentation products influence the growth of the(002)plane of calcium sulfate dihydrate without forming covalent bonds with the crystals,and the morphology of dihydrate gypsum crystals remains largely unchanged.
Keywords：desulfurization gypsumrice fermentation productwaterproof performancesoftening coefficientretardation time
Publication Date：2026-01-31
Online Publishing Date：2026-03-17(First online date of this platform, not the publication date of the document)
Pages：8( 113-120 )