Patent ID: 7905956

Claim:
A fiber reinforced cement composition comprising the following raw materials: not less than 25% by mass and not more than 45% by mass of a hydraulic inorganic material; not less than 50% by mass and not more than 65% by mass of a siliceous material; not less than 5% by mass and not more than 12% by mass of a woody reinforcement; not less than 1% by mass and not more than 7% by mass of a mica; and not less than 0.25% by mass and not more than 1.5% by mass of a polyvinyl alcohol resin, wherein the mass ratio of CaO to SiO 2 (CaO : SiO 2 ) contained in the hydraulic inorganic material and the siliceous material in the raw materials is in a range of from 23:77 to 60:40, the hydraulic inorganic material is a portland cement, the siliceous material is silica sand and/or silica fume and/or fly ash and/or blast furnace slag and/or perlite powder and/or glass powder, a woody reinforcement is needle-leaves-tree unbleached kraft pulp and/or needle-leaves-tree bleached kraft pulp and used newspaper.