DRY MIXTURES

[:ru]Сивков С. П.[:en]Sivkov, S.[:] [:ru]к.т.н., доцент, зав. кафедрой, Российский химико-технологический университет им. Д. И. Менделеева, г. Москва, Россия[:en]PhD, associate professor, Head of Department, D. Mendeleev University of Chemical Technology of Russia, Moscow, Russia[:]

[:ru]Потапова Е. Н.[:en]Potapova, E.[:] [:ru]доктор техн. наук, профессор, Российский химико-технологический университет имени Д. И. Менделеева, г. Москва, Россия[:en]Doctor of Sc., Prof., D. Mendeleev University of Chemical Technology of Russia, Moscow, Russia[:]

[:ru]Захаров С. А.[:en]Zakharov, S.A.[:] [:ru]главный технолог ООО «Вакер Хеми Рус»[:en]chief technologist of Wacker Chemie Rus Ltd.[:]

[:ru]Назаров Д.В.[:en]Nazarov, D.V.[:] [:ru]менеджер Henan TS Chemical Industry[:en]manager of Henan TS Chemical Industry Co., Ltd[:]

Alitinform №1 (38) 2015 г. 80-89 p.

Abstract

We have studied the effect of the type of metakaolin on the processes of hydration and hardening of the cement stone. It was established that additives studied are actively interact with Са(ОН) 2 with the formation of hexagonal and cubic calcium hydroaluminates and low crystallized hydrated calcium silicates with different basicity. It was proved that the introduction of metakaolin into the composition of cement leads to the increase in strength of cement stone, improvement of frost resistance and resistance to corrosion of the cement stone and decrease of its porosity.

Key words:

additive; metakaolin; cement hydration; increase in strength; improvement of freeze-thaw resistance; frost resistance