CONCRETE

[:ru]Рояк Г. С.[:en]Royak, G.[:] [:ru]д.т.н., проф., АО ЦНИИС Научно-исследовательский институт транспортного строительства[:en]DSc in Engineering, Professor, SC TSNIIS Research Institute of Transport Construction[:]

[:ru]Грановская И. В.[:en]Granovskaya, I.[:] [:ru]к.т.н., АО ЦНИИС Научно-исследовательский институт транспортного строительства[:en]PhD in Engineering, JSC TSNIIS Research Institute of Transport Construction[:]

[:ru]Стржалковская Н. В.[:en]Strzhalkovskaya, N. V.[:] [:ru]инженер, Научно-исследовательский институт транспортного строительства, Москва, Россия[:en]Eng., Research Institute of Transport Construction, Moscow, Russia[:]

[:ru]Миленин Д. А.[:en]Milenin, D. A.[:] [:ru]инж., Научно-исследовательский институт транспортного строительства, Москва, Россия[:en]Eng., Research Institute of Transport Construction, Moscow, Russia[:]

Alitinform №4-5 (36) 2014 г. 80-89 p.

Abstract

The article presents the results of examinations of Portland cement containing fly ash and of reactive aggregates in cement mortars.
The use of fly ash has made it possible to reduce the expansion deformations and, in some cases, to prevent the destruction of the cement-sand mortar and concrete, which had taken place as a result of a corrosion process at the interaction of the alkaline environment with the aggregate that contained reactive silica inclusions.

Key words:

fly ash; concrete; alkaline corrosion; silica