Optimization of the composition of non-autoclaved aerated concrete with blast-furnace granular slag according to the criteria of compressive strength and average density

Abstract

Optimization of the composition of non-autoclaved aerated concrete with blast-furnace granular slag according to the criteria of compressive strength and average density

Shujskij A.I., Khalyushev A.K., Stelmakh S.A., Shcherban E.M., Kholodnjak M.G.

Incoming article date: 30.07.2017

The composition of non-autoclaved aerated concrete with blast-furnace granular slag was developed and optimized, which was introduced in an amount from 5 to 15% instead of a part of the silica component (quartz sand) into aerated concrete. By the results of optimization by the method of least squares, the basic regression equations were obtained in the form of polynomials of the second degree and the optimal compositions of non-autoclaved cellular concrete with the addition of blast-furnace granular slag. In this case, the most effective is a dosage of 15%, which has a positive effect on the increase in strength of cellular concrete in comparison with the control composition and does not lead to an increase in the average density.

Keywords: non-autoclaved aerated concrete, active mineral additive, medium density in the dry state, compressive strength, blast-furnace granular slag, least-squares method, regression equation, silica component