The effect of ground limestone on the properties of composite gypsum binder using thermally activated clay as a pozzolanic component

The purpose of this research is to study the effect methods preliminary preparation thermally activated clay, which a pozzolanic component in water-resistant composite gypsum binders, as well mechanochemical activation joint grinding clay with addition plasticizer on activity and change required number composition binders. It was found that amount gypsum-cement-pozzolan when ground specific surfaces 200-500 m2/kg together Melflux 2651 F plasticizer, based exclusion conditions for formation an unacceptable ettringite, decreases by 20-25% compared use without introduction plasticizer. optimal introduced has been determined. significance results construction industry lies fact technology obtaining binders certain dispersion additive due makes it possible reduce consumption binder or energy grinding.