abstract |
The object of the present invention is to provide a light weight wood cement board having high strength and sufficient toughness. To attain the object, the present invention provides a wood cement board made of a cured raw material mixture of cementitious inorganic powder (C), a material containing silica (S), bundled wood fiber, and mica, wherein the weight ratio of said cementitious inorganic powder and said material containing silica is set to be in the range of between 40:60 and 50:50. The bundled wood fiber has a bulky shape, and gives good toughness to said wood cement board, with the mica improving its dimensional stability. In a case where the C/S is set to be in the range of 40:60 and 50:50, the curing of said board proceeds smoothly, leaving little unreacted material remaining in the board. |