METHOD FOR MANUFACTURE OF CELLULAR CONCRETE ARTICLES Russian patent published in 2004 - IPC

FIELD: building materials, applicable for manufacture of cellular concrete articles and structures. SUBSTANCE: the method consists in delivery of the components of raw material without heating, their batching and agitation, delivery of the molding sand to a non-heated mould and simultaneous, without any cure, formation of a porous structure and heating at an atmospheric or gauge pressure. The mix is delivered to the mould and heated by electrodes at a voltage of 220 or 380 V up to swelling of the mix three and more times and filling of the mould with it during 5 to 15 min at an ambient temperature up to minus 10 deg C. EFFECT: reduced mean density of cellular concrete, simplified condition of production. 1 dwg, 2 tbl, 1 ex