PURPOSE: To provide the hydraulic inorganic molded product having a high strength and excellent dimensional stability and exhibiting the reinforcing effect of reinforcing acrylic fibers after cured in an autoclave by adding a hydrophilic component and amorphous silica such as pozzolan active silica in a dry molding method, and to provide the method for producing the same.

CONSTITUTION: Basic raw materials comprising a cement and a silica component (crystalline silica and amorphous silica, and a case in which the content of the crystalline silica is zero is included) which are cement basic raw materials in a hydraulic material, the content of the amorphous silica being at least 10 pts.wt., and the content of the cement being 220 pts.wt. per 100 pts.wt. of the total amount of the cement and the silica component, are mixed with acrylic fibers. The mixture is molded by a dry method and subsequently cured in an autoclave to provide the acrylic fiber-reinforced inorganic molded product having a specific flexural strength of ≥35kg/cm2 calculated by dividing its flexural strength by the second power of its specific gravity.