| 摘要 |
PROBLEM TO BE SOLVED: To adjust thixotropy, improve impregnability, and improve reinforcing strength by mixing short aramid fiber, carbon fiber or glass fiber with an adhesive resin to impregnate the fiber sheet with the resin. SOLUTION: A primer 2 is applied on the surface of a concrete structure 1 and a fiber sheet 3 such as carbon fiber, aramid fiber, etc., is impregnated with a resin adhesive and stuck on the structure to apply a surface finishing material 4 such as a resin painting material, a mortar spraying material, or a composite material of both materials. Moisture setting type, cold setting type, or heat setting type epoxy resin or photocuring radical polymerization resin is used as the impregnating adhesive resin. Aramid fiber, carbon fiber, or glass fiber having fiber length of 100-3,000 μm is mixed as thixotropy- imparting agent. In this way, stable thixotropy in elapse of time and change of temperature can be adjusted and hence, impregnability into a fiber sheet is improved and reinforcing strength by the resin sheet can be improved. |
