REINFORCING METHOD OF REINFORCED CONCRETE STRUCTURE BY SINGLE-FLUID EPOXY RESIN COMPOSITE MATERIAL

摘要

PROBLEM TO BE SOLVED: To dispense with a mixing work to eliminate the time for the work by impregnating a fiber sheet with a moisture hardenable single-fluid epoxy resin composition containing a ketimine compound and an epoxy resin, and adhering the resulting sheet to a reinforced concrete surface. ;SOLUTION: The concrete surface of an RC structure is cleaned, and a primer is applied thereto and dried. A moisture hardenable single-fluid epoxy resin composition containing a ketimine compound and an epoxy resin is applied, a fiber sheet is stuck thereto, and the single-fluid epoxy resin composition is applied as an impregnating resin by a roller brush. The single-fluid epoxy resin composition is squeezed by a rubber spatula and impregnated into the sheet, and defoaming is also performed. When a plurality of fiber sheets are laminated, one following fiber sheet is stuck, and the impregnation and deforming are repeated in the same manner. In order to satisfy both requirements of impregnating property and flowing property, the thixotropic index is preferably set to 3 or more, particularly, 3-10. Thus, a reinforcing method of reinforced concrete having satisfactory working property and excellent in working environment and resource consumption can be provided.;COPYRIGHT: (C)1999,JPO