Nacional'nyy issledovatel'skiy Mordovskiy gosudarstvennyy universitet im. N.P. Ogareva (Kafedra stroitel'nyh konstrukciy, Professor)
Saransk, Saransk, Russian Federation
Saransk, Saransk, Russian Federation
Saransk, Saransk, Russian Federation
666.972.16
67.09
The results of analyzing the effect of complex organomineral additives (OMA) on physical and mechanical properties of fine-grained concrete were presented. The OMA composition included: poly-mineral clay of Nikitskoy clay deposit of the Republic of Mordovia (MA), fired for 2 hours at 700°C, polycarboxylates ester SINTEFLOW MEGA 52 and a mixture com-position based on isopropanolamines ESP800 produced by “Syntez Oka - Construction Chemistry” LLC. The following factors were investigated as varying factors: grinding duration of polymineral clay (2-4 hours), polycarboxylates ester con-tent (0.15-0.35% by mass of MA) and isopropanolamines-based blending composition (0.1-0.25% by mass of MA). OMA complexes have been identified, the use of which in the compositions of fine-grained cement concretes makes it possible to obtain composites with strength characteristics not inferior to additive-free concrete. It is shown that due to the introduc-tion of polycarboxylates ester SINTEFLOW MEGA 52 and mixture composition based on isopropanolamines ESP800 in addition to mineral additives on the basis of fired clay raw materials (20% by mass of cement) into the OMA composition, it is possible to increase the tensile strength in bending, strength and modulus of elasticity in compression of fine-grained cement concrete up to 11, 30 and 40%, respectively.
fine-grained concrete, organomineral additive, fired clay, polycarboxylates ester, isopropanolamine-based blended compositions
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