METHOD OF LIGHT-CONCRETE MIXTURE PREPARING Russian patent published in 1995 - IPC

FIELD: building industry. SUBSTANCE: method of making of light-concrete articles involves stirring of polystyrene foam granules, quartz sand, cement and surface-active agent, and viscous foam also. Addition at stirring is carried out at the following sequence: quartz sand, cement, 5% surface-active substance, viscous foam and polystyrene foam at the following ratio of components, wt.-%: cement 51-57; 5% surface-active substance solution 4.1-4.8; viscous foam 15.5-18.7; polystyrene foam granules 2.1-2.7, and quartz sand - the rest. Concrete strength after 48 h and 28 days is 2.05-2.5 and 2.8-3.1 MPa, respectively. EFFECT: improved method of preparing, enhanced quality of mixture. 1 tbl