Impregnation resin for a woven or stitched fabric

Abstract

A method to reinforce a built structure, wherein an impregnation resin including a resin component including at least one epoxy resin and hardener component including at least one amine of the formula (I) is used to impregnate woven or stitched fabric, which is wrapped around and/or adhered onto built structure. The inventive method preferably serves to improve earthquake safety of buildings, as replacement for missing reinforcement inside concrete, for improvement of strength and ductility or for increase of payload of a built structure. It enables the application of an emission-free impregnation resin with low odour, which has a long open time and good penetration into the fabric, shows fast and reliable curing without tendency to blushing, and forms a dry, non-sticky surface. The cured impregnation resin has a high strength, a high glass transition temperature and good adhesion properties, enabling a good durability and long-term stability of the reinforced structure.

Dependencies are inferred from the claim text.