Abstract
The paper considers the issues of obtaining a composite material based on gypsumbinder and sulfur with high performance. Technological factorsinfluencing the hardening coefficient, water resistance and chemical resistance of gypsum products impregnated in sulfur melt have beenstudied. The regularities of impregnation of gypsum matrix with sulfur melt are established takinginto account the capillary-porous structure of gypsum stone and physical and technical properties ofsulfur. The regularities of impregnation of gypsum matrix with sulfur melt are established taking intoaccount the capillary-porous structure of gypsum stone and physical and technical properties ofsulfur. Research and consideration of mass transfer indicators during impregnation of gypsumconcrete products with sulfur melt allowed to optimize the technology. Thus, by the method ofcapillary impregnation on the original laboratory installation, the mass transfer coefficients forsulfur were measured. As a result of these studies, the dependences of the mass transfer coefficienton the temperature of the sulfur melt, the rate of heating of the melt, the concentration of the fillerand the water-solid ratio were obtained. Products made of composite material based on gypsum andsulfur have the following construction and technical characteristics: compressive strength, not lessthan 30.0 MPa; flexural strength, not less than 6.0 MPa; water resistance coefficient, not less than0.7; coefficient of corrosion resistance, not less than 0.7; wear resistance, no more than 0.3 g / cm2 .Analysis of the main construction and technical characteristics of the composite material based ongypsum and sulfur shows that the resulting composite has high strength, water and corrosionresistance to various aggressive environments. Facing tiles made of this material have highperformance characteristics and should be used in the lining of buildings of railway infrastructure,drainage systems, fertilizer storage, floors and walls of the chemical and food industries.
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