| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a light-weight wooden cement board high in strength and sufficient in toughness. <P>SOLUTION: The wooden cement board which is formed out of a hardened matter of a raw material mixture containing a cement-based inorganic powder (C), a material containing siliceous matter (S), a wooden fiber bundle, and mica, and in which the mass ratio of the cement-based inorganic powder (C) to the material containing siliceous matter (S) is set in the range of 40:60 to 50:50, is provided. The wooden fiber bundle is bulky and gives toughness to the wooden cement board, and the mica improves the dimensional stability of the board. When the C/S is set in the range of 40:60 to 50:50, the hardening of the board progresses smoothly and the remaining amount of unreacted matter is reduced. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
