초록 ▼

A structural rebar of the present invention includes: an inner core formed by pultruding reinforcing fibers of a first reinforcing material through a bath or injection system of a first resin material; and an outer cladding comprising an inner cladding layer and an outer cladding layer. The inner co

A structural rebar of the present invention includes: an inner core formed by pultruding reinforcing fibers of a first reinforcing material through a bath or injection system of a first resin material; and an outer cladding comprising an inner cladding layer and an outer cladding layer. The inner core contains at least about 40 percent by weight reinforcing fibers of the first reinforcing material. The inner cladding layer comprises a second resin material reinforced with reinforcing fibers of a second reinforcing material. The fibers of the second reinforcing material are preferably unidirectional and oriented substantially parallel to the fibers of the first reinforcing material. The outer cladding layer comprises a corrosion-resistant third resin material reinforced with a third reinforcing material. Rebar of this configuration can have sufficient strength, rigidity, and corrosion resistance to be suitable for use in cementitious structural members.

대표청구항 ▼

[ That which is claimed is:] [1.] A method of forming a reinforcing structural rebar comprising the steps of:(a) impregnating reinforcing fibers by pultruding the reinforcing fibers through a bath or injection system of a first resin material;(b) subjecting the impregnated reinforcing fibers of step

[ That which is claimed is:] [1.] A method of forming a reinforcing structural rebar comprising the steps of:(a) impregnating reinforcing fibers by pultruding the reinforcing fibers through a bath or injection system of a first resin material;(b) subjecting the impregnated reinforcing fibers of step (a) to conditions sufficient to partially thicken the first resin material; and(c) forming a inner cladding layer over the impregnated fibers of step (b) and the partially thickened first resin impregnated in the reinforcing fibers of step (b) with a second resin material reinforced with unidirectional fibers; and(d) forming an outer cladding layer over the inner cladding layer of step (c) with a third resin material reinforced with a third reinforcing material.