limestone microfiller

This paper presents the properties of fresh and hardened self-compacting concrete (SCC) containing supplementary cementitious materials, such as complex sulphoaluminosilicate additive based on the metakaolin and gypsum, fly-ash and limestone microfiller. If sufficient gypsum is present the main hydration products in unclinker part is a thin crystals of ettringite. Ettringite is formed by a topochemical reaction in a closed space at the beginning of the formation of the cement matrix, which ensures the compaction of SCC.

In the article the features of reinforced concrete hardening at different temperature conditions and the current issues of preparation technology of Self-Сompacting Сoncretes (SCC) on the basis of superplasticized cementitious systems, combining knowledge of structure and modifying Portland cement compositions "Portland cement – active mineral additives – microfiller – superplasticizer – accelerator of hardening" to search for rational making provision of technical and building properties of concrete in the changing factors of its composition, technology and exploitation are shown.