METHOD OF MANUFACTURING SAWDUST CONCRETE Russian patent published in 1999 - IPC

FIELD: manufacture of building materials. SUBSTANCE: method of manufacturing sawdust concrete from preliminarily extracted (1 hr at 100 C) larch wood waste in the form of sawdust and binding agent (brown coal-combustion fly ashes from heat power plants and carbon-containing liquid glass synthesized from silicon production waste - microsilica containing graphite and carborundum admixtures) consists in preparing sawdust(14.6-15%)- ashes(34.3-35)-liquid glass(51.1-51.5%) mixture, molding product by in- layers vibration compaction, and hardening caused by steam-curing treatment conducted for 12 hr at 80-90 C. EFFECT: 2-3 times increased strength of material, reduced hardening time (from 28 days to 12 hr), eliminated mineralization of wood filler, and reduced production cost. 3 cl, 2 tbl