RAW MIXTURE FOR PRODUCTION OF WOOD BUILDING MATERIALS Russian patent published in 1995 - IPC

FIELD: manufacture of wood building materials. SUBSTANCE: raw mixture contains, wt. -% : disintegrated wood, absolutely dry, 35-50; granulated ground blast furnace slag, 19-27; quicklime, 8-10; calcium chloride, 8-12; aluminium sulfate or iron oxides (Fe³⁺ 30-65, Fe²⁺ 35-70), 1-3; water - the balance. When preparing the raw mixture, the mixed iron oxides or aluminium sulfate are mixed with water, treated with calcium chloride, and mixed again. Then ground wood is added and mixed. The resulting mixture is mixed with slag and quicklime ground jointly in advance. The resulting material has a compression strength of 3.2-6 MPa after 30 min and 8.5-11.7 MPa after 24 h; a bending strength of 5.8-8.2 MPa after 24 h; a water resistance coefficient, 0.71-0.99. EFFECT: improved composition. 3 tbl