PURPOSE: To obtain a structural material excellent in bond strength to matrix structure by preparing a braid fibrous form by knitting fine fiber of high tensile strength, binding the fiber with a binder and spraying rigid granules on the resultant surface to make the surface more coarse with fine pores formed thereon.
CONSTITUTION: A braid fibrous form 2 is first prepared by knitting fine fiber 1 of high tensile strength (e.g., aromatic polyamide fiber). The respective fine fibers 1 are mutually bound through a binder 3 consisting of e.g., epoxy resin, and rigid granules such as sand are sprayed with injection pressure on the surface of the fibrous form 2 to form fine pores 6 thereon, thus easily producing the more coarse, uniform surface, leading to higher bond strength of the resultant structural material to matrix, e.g., concrete, plastic, etc., into which the material is to be embedded as reinforcing material.
HASUO KOICHI
NAKOJI MASATERU
