Optimization of the binder for dry building flooring mixes
Abstract
Optimization of the binder for dry building flooring mixes
Incoming article date: 14.03.2015"This article presents the results of research shrinkage of Portland cement with the addition of gypsum and alumina cement. A technique for the ultimate shear stress of cement paste on his spreadability on the glass and method of estimation of heterogeneity of the mixture was suggested. It is shown that the definition of the area blurring the mixture with a digital camera, followed by treatment with the results using a graphical editor allows to obtain more accurate data on the limit tension of the mixture and its homogeneity. It was found that binder comprising 78% of portland cement, 21,5% of gypsum and 0,5% of aluminous cement has low shrinkage for 3 days. The optimum dosage of additives gypsum and alumina cement depends on the chemical and mineralogical composition of portland cement. "
Keywords: dry mixes, flooring mixes based on cement binder, mixed binder, alumina cement, gypsum, superplasticizer