About Selection of Compositions of High-Quality Concretes with Organic-Mineral Modifiers
Features of the selection of compositions of high-quality concretes of B40-B100 classes on the basis of organic-mineral modifiers of MB type are considered. Rational fields of the useof modifiers of various grades for the provision of required characteristics of concrete mixes and concretes - fluidity, strength, and self-stressing - are shown. Dependences of the concretestrength on cement consumption, dozing of the modifier, and water-binder ratio are presented. Compositions of low-cement concretes with a low heat rise, high-strength andstructural light concretes, self-compacting concretes, self-stressing concretes, concretes with low permeability and high frost resistance, which are used when constructing uniquefacilities of civil, industrial and transport construction, are also presented.