CONCRETE

[:ru]Кирсанова А. А.[:en]Kirsanova, A. A.[:] [:ru]ассистент, каф. «Строительные материалы»; Южно-Уральский государственный университет, Челябинск, Россия[:en]Assistant, Department of Construction Materials, South Urals State University, Chelyabinsk, Russia[:]

[:ru]Киль П. Н.[:en]Kil, P. N.[:] [:ru]аспирант, каф. «Строительные материалы»; Южно-Уральский государственный университет, Челябинск, Россия[:en]Postgraduate Student, Department of Construction Materials, South Urals State University, Chelyabinsk, Russia[:]

[:ru]Крамар Л. Я.[:en]Kramar, L. Y.[:] [:ru]д-р техн. наук, проф.; каф. «Строительные материалы»; Южно-Уральский государственный университет, Челябинск, Россия[:en]Doctor of Technical Sciences, Professor; Department of Construction Materials, South Urals State University, Chelyabinsk, Russia[:]

Alitinform №3 (35) 2014 г. 58-63 p.

Abstract

The article discusses the effect of accelerating admixtures on the hardening and properties of concretes based on slag Portland cements. The accelerators used were highly active mineral admixtures, namely, microsilica and metakaolin, as well as sodium and calcium formiates. Accelerating admixtures were used together with a superplasticizer. It was found that the most efficient hardening accelerator is metakaolin. The durability of concrete is more dependent on microsilica and sodium formiate. All the admixtures are efficient only when used with a superplasticizer.

Key words:

slag Portland cements (SPC); accelerating admixtures; metakaolin; microsilica; sodium and calcium formiates; strength; frost resistance