Progress in cement science - why alkaline activation?





Krivenko, P.

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Fifty years ago just an idea of the presence of free alkalis in a cement matrix was considered by the ordinary portland cement (OPC) people as an absurd one and this was a basic postulate accepted in the chemistry of cements. In 1957 a scientist from Ukraine (USSR) Victor Glukhovsky put forward an assumption which was taken as a base for development and bringing into practice of construction a principally new class of cementitious materials which first appeared in the art under a name of “alkaline cements” (now also known under a general name of “alkali-activated cements (AAC)”. A validity of these ideas is confirmed by more than 50 years of evolutional development and vast experience collected from practical use of new materials in a variety of large-scale applications. A present review covers theoretical views on role played by alkali in cement stone structure formation. Examples of compositional build-up of the alkali- activated cementitious materials as a function of quantity of alkali and type of aluminosilicate component are reported as well as the results of inspection taken over the AAC concrete structures made with these cements.


Ключові слова

alkali- activated, aluminosilicate, cements, durability, hydration products, щелочеактивированные, алюмосиликаты, цементы, долговечность, продукты гидратации, кафедра геотехніки

Бібліографічний опис

Krivenko P. Progress in cement science - why alkaline activation? / P. Krivenko // Motrol : Commision of motorization and energetics in agriculture : an intern. journal of operation of farm and agri-food industry machinery / Polish Acad. of sciences, Univ. of eng. and econ. in Rzesżow ; ed.-in-chief E. Krasowski. – Lublin ; Rzeszów, 2014. - Vol. 16. - № 8. - P. 55 – 66. - Bibliogr. : 24 titl.