RAW MIXTURE FOR WOOD-CONCRETE MATERIALS MAKING AND METHOD OF ITS PREPARING Russian patent published in 2002 - IPC

FIELD: building industry. SUBSTANCE: raw mixture for making wood-concrete materials comprises mineral binding agent, wood and mineral filling agents, addition and water. Water glass is used as addition in the following ratio of components, mas. p. p.: mineral binding agent, 25.5-40; wood filling agent, 30-49.5; mineral filling agent, 1-15.5; water glass, 0.2-0.74; water, the balance, up to preparing uniform friable mass. Method of preparing raw mixture for making wood-concrete materials involves stirring wood filling agent with mineral filling agent, mineral binding agent, addition and water. Process of mixture preparing is carried out continuously for three stages: at the first stage wood filling agent is stirred with mineral binding agent under dry condition for 1-1.5 min; at the second stage ? amount of measured water and water glass are added and stirring is carried out for 1-1.5 min; at the third stage mineral filling agent and remained water are added and stirred finally up to preparing uniform friable mass for 1-2 min. Invention can be used in preparing building materials used in building of industrial and dwelling objects. EFFECT: accelerated process of mixture preparing, improved properties. 2 cl, 1 tbl