| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing an inorganic formed product by which the fluidity of the material until hardening is improved resulting in improved workability and the obtained hardened product has excellent mechanical strength and water resistance. SOLUTION: The inorganic formed product is obtained by using a hardenable composition prepared by preliminarily reacting phosphoric acid, phosphites and basic metal compounds of bivalent metals and then uniformly mixing aluminum hydroxide while heating. Further, in the preparation of the hardenable composition, the ratio of the total valence of the phosphate ions and phosphite ions to the total valence of the metal ions included in the respective compounds is specified so as to obtain the inorganic formed product free from cracks or voids and excellent in the water resistance, mechanical strength, dimensional stability and heat resistance. |
