CEMENT

[:ru]Гольдштейн Л. Я.[:en]Goldstein L. Y.[:] [:ru]научный редактор, Международное аналитическое обозрение «Алитинформ: Цемент. Бетон. Сухие смеси», Санкт-Петербург, Россия[:en]Science Editor, ALITinform: Cement. Concrete. Dry Mixes. International Analytical Review, St. Petersburg, Russia[:]

Alitinform №2 (09) 2009 г. 105-107 p.

Abstract

From times to times discussions among specialists take place in regard to insufficient comparability of tests results concerning cement physico–mechanical properties, which tests are carried out by cement manufacturers and by specialists using cement in concrete compositions. However, in the opinion of the author of this paper, the main reason of that is not connected with test methods (especially taking into consideration that they are being constantly improved), but first of all with insufficient stability of material composition and chemical and mineralogical composition of cements, causing corresponding insufficient stability of their — technical characteristics for construction.

As it is well known, cement production technology is very complex, while quality of obtained clinker and cement as the product of its grinding depends on many factors. I deem it necessary to mark out two of them: stability of clinker’s chemical and mineralogical composition and granulometric composition of cements.