The influence of high alumina cement and disperse brown fused corundum ratio on the properties of mullite corundum concrete and samples from it
The influence researches of high alumina cement brand of “VGTS-73” and disperse brown fused corundum ratio on the properties of mullite corundum concrete brand of “MКBС” have been carried out. As a result of carried out researches the expediency of amount decreasing of the high alumina cement brand of “VGTS-73” with specific surface area of 7000 cm2/g from 20 to 15 % and amount increasing of the disperse brown fused corundum from 10 to 15 % in the composition of mullite corundum concrete brand of “MКBС” has been determined. It promotes to strength increasing of samples from this concrete after thermal treatment at a temperature of 1450 оC by 44 % (from 104 up to 150 N/mm2), refractoriness by 60 оC (from 1660 up to 1720 оC) and thermal shock resistance by 30 % (from 7 up to 9 thermal cycles) at preservation of long working time of the concrete mix, as well as to decreasing of production costs. Manufacturing of the mullite corundum concrete brand of “MКBС” with improved composition was put into production at the PJSC “THE URIR NAMED AFTER A. S. BEREZHNOY”.