CONCRETE

Alitinform №6 (32) 2013 г. 52-67 p.

Abstract

The properties of cement pastes with various dispersive capacities (200–600 m²/kg) and silica filler (100–900 m²/kg) were studied. It was established that after a long period of hardening during 24 years cement stone with finely dispersed silica filler (500–900 m²/kg) had very high compressive strength but lost bending strength. High compressive and bending strength can maintain if we use coarsely ground filler (100 m²/kg). By this time up to 28 % of Portlandite is formed in the cement stone.

Key words:

durability; cement stone; silica filler; dispersion; compressive strength; bending strength