| 摘要 |
PROBLEM TO BE SOLVED: To provide a lightweight, fiber-containing gypsum board showing an excellent workability and having a nail holding power of≥5 N/mm, by using gypsum as an essential component and mixing it with calcium silicate hydrate obtained beforehand through hydrothermal synthesis as a weight-reduction material, and its manufacturing process. SOLUTION: The fiber-containing gypsum board comprises, by mass, 5-40% calcium silicate hydrate, 33-80% gypsum dihydrate, 2-12% reinforcement fiber and 10-50% inorganic filler and has a nail holding power of≥5 N/mm and an apparent density of 0.7-1.2 g/cm<SP>3</SP>. The calcium silicate hydrate is obtained beforehand by performing hydrothermal synthesis of a calcareous raw material and a siliceous raw material. COPYRIGHT: (C)2004,JPO |
