FIELD: manufacture of building materials; production of heat-insulating cellular concretes.
SUBSTANCE: according to first version, first water at ratio of W/S=0.5-0.65 is fed to mixer, then sand and synthetic anion-active foaming agent in the amount of 0.08-0.1% of mass of solid components is introduced and components are mixed for 1.5-2.3 min, after which cement is introduced and components are mixed to complete air-entrainment of mix; solid components are introduced at the following ratio, mass-%: sand, 30-35; cement, 65-70. According to second version, first water in the amount of W/S=0.6-0.75 is fed to mixer; perlite of fine fraction is introduced as silica component and anion-active synthetic foaming agent is additionally introduced in the amount of 0.08-0.1% of mass of solid components; components are mixed for 1.5-2.3 min; then cement is introduced and mixing is continued till complete air-entrainment of mix; solid components are introduced at the following ratio, mass-%: perlite, 1-3; cement, 97-99.
EFFECT: reduction of shrinkage deformation, density and heat conductivity of cellular concrete with no impairment of its strength; reduced consumption of foaming agent and cement.
3 cl, 2 tbl, 1 ex
