| 摘要 |
PROBLEM TO BE SOLVED: To provide an extrusion-molded cement material in which incorporated short fibers are not strongly oriented in the extrusion direction, and anisotropy is reduced and a method for producing the material. SOLUTION: In the extrusion-molded short fiber composite cement material, the ratio of the short fibers oriented in the extrusion direction is 50-90%. In the method for producing the extrusion-molded cement material, by setting the viscosity of an uncured short fiber composite cement composition to be extrusion-molded at 400-3,500 Pa.s, the ratio of the fibers oriented in the extrusion direction in the extrusion-molded material is controlled to be 50-90%. The short fibers 3-15 mm in length, 5-20μm in diameter, and 150-1,000 in aspect ratio are incorporated in the cured material in a volume ratio of 0.1-10%. COPYRIGHT: (C)2003,JPO
|
