PRODUCTION OF FIBER REINFORCED CEMENT BOARD

摘要

PROBLEM TO BE SOLVED: To improve the resistance to breakage at the time of nailing of a fiber reinforced cement board without reducing the specific tensile strength per unit weight. SOLUTION: In the production process of a fiber reinforced cement board, comprising extrusion-forming a cement molding compound combined with a reinforcing fiber together with silica, an organic short fiber containing a fiber having fiber length shorter than about 14 mesh in the fiber length distribution, in an amount of >=70% and obtained by Bauer Mcnett method (wet method) is incorporated, as a reinforcing fiber into the cement molding compound in an amount of 15-25 pts.wt. per 100 pts.wt. of the cement contained in the cement molding compound.