BINDING AGENT FOR WOOD-CEMENT MATERIALS Russian patent published in 1995 - IPC

FIELD: manufacture of building materials. SUBSTANCE: binding agent for wood-cement composition includes: mas.%: portland cement 26.2-87.3; still wastes 0.4-7.3; aqueous suspension of solid wastes of soda production 5.4-73.4. During preparation of binding agent, loaded into mixer with continuous stirring are portland cement, aqueous suspension of solid wastes of soda production, still wastes and water. Wood filler may be introduced in same mixer. Bending strength of cement-wood particle boards is up to 18.2 MPa, and fibreboards - up to 1 MPa. EFFECT: higher efficiency. 4 tbl