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(57) Abstract: [Configuration] (a) a molten clay A powder obtained by spraying into a gas, SiO 2. 5 to as its chemical composition Inorganic powder containing 85% by weight and 10 to 90% by weight of Al 2 O 3 , (b) alkali metal silicate, (c) water and (d) polyorganosiloxane, polyorganosilsesquioxane, silica fine particles or It consists of a water-repellent agent whose main raw material is a mixture of these, and includes (a) :( b) :( c): The weight ratio of (d) is 100: 0.2 to 450: 35 to 1 A curable inorganic composition, characterized in that the main component is a mixture of 500: 0.5 to 100. [Effect] A curable inorganic composition suitable as a raw material for producing an inorganic cured product having good curing reactivity, excellent strength and durability, and water repellency, which can prevent various defects caused by moisture absorption and water absorption. Provide things. |