Krivenko, P.2020-12-222020-12-222014Krivenko 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.1730-8658https://repositary.knuba.edu.ua/handle/987654321/6832Fifty 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.enalkali- activatedaluminosilicatecementsdurabilityhydration productsщелочеактивированныеалюмосиликатыцементыдолговечностьпродукты гидратациикафедра геотехнікиArticle691.54