PRODUCTION OF INORGANIC CURED PRODUCT

摘要

PROBLEM TO BE SOLVED: To obtain an inorganic cured product excellent in high strength and incombustibility by mixing a cellulosic thickener and zirconium ammonium carbonate into a cement composition. SOLUTION: In producing an inorganic cured product by subjecting a cement composition comprising cement, silica and reinforcing fiber to extrusion molding, a cellulosic thickener and zirconium ammonium carbonate are mixed into the cement composition. The cellulosic thickener in an amount of 1-2 pts.wt. and zirconium ammonium carbonate in an amount of 0.02-0.2 pts.wt. based on 100 pts.wt. cement are preferably used. Well-known cement such as portland cement, blast furnace cement or alumina cement can be used as the cement. Fine powder silica having >=4,000cm<2> /g specific surface area is preferably used. Pulp fiber or organic synthetic fiber can be used as the reinforcing fiber. The cellulosic thickener includes e.g. methyl cellulose or hydroxyethyl cellulose.