THE PROPERTIES OF CEMENTS CONTAINING FLY ASH TOGETHER WITH OTHER ADMIXTURES

摘要: The admixtures of condensed silica fumes (csf) and phosphogypsum were used together with fly ashes as blended cement components to improve the early strength other properties. standard tests at normal curing made well measurements after low pressure steam treatment 70 deg C. All cements mixed CSF showed compressive strengths about 13-20 MPa higher than reference mortars. More detailed studies hardening process also carried out. reduction total porosity pore size was found. same positive effect observed in case mortars treated This additive improves significantly pozzolanic properties low-calcium PFA. Study results relating pastes have been confirmed for concretes. It is concluded that studied, particularly CSF, a influence on PFA concretes help augment content these