CONCRETE

625.84

[: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]Чирков А. М.[:en]Chirkov, A.[:] [:ru]к.т.н., руководитель SURTEAT TECHNOLOGIES INC., Москва, Россия[:en]PhD in Engineering, Head of SURTEAT TECHNOLOGIES INC., Moscow, Russia[:]

Alitinform №4-5 (48) 2017 г. 64-71 p.

Abstract

The article analyzes the ways of alkali penetration into cement, accumulation of alkalis during cement hydration, and their role in reactions with aggregates’ silica. The mechanism of lithium nitrate’s effect on the slowing and prevention of the negative impact on concrete of the interaction of alkaline phase with reactive aggregates is analyzed herein.

Key words:

cement, concrete, rock, alkaline cor-rosion, concentration, adsorption, calcium hydrosilicate, lithium nitrate