| abstract |
(57) [Problem] To provide a calcium silicate molded article which is used as a building interior material, is lightweight, has high mechanical strength, and is excellent in workability of a processed surface and a polished surface. SOLUTION: A crystalline silica raw material, a calcareous raw material, water, and a solid content of 1.0 to 6.0 parts by weight based on 100 weight parts of a solid content in a mixture of the crystalline silica raw material and the calcareous raw material. The raw material slurry containing the natural cellulose fiber raw material is subjected to a hydrothermal treatment reaction, whereby the calcium silicate water containing the natural cellulose fiber raw material crystallized in twigs with primary particles of calcium silicate hydrate entangled on the fiber surface. A calcium silicate molded product obtained by synthesizing a hydrate and molding and drying the calcium silicate hydrate. |