High-temperature resistance performance of an inorganic adhesive for concrete structures strengthened with CFRP sheets

Abstract

Organic epoxy matrices have been widely used in the FRP reinforcing technique, but they have serious disadvantages of poor high-temperature resistance. An inorganic adhesive is invented to replace the organic adhesive. For the inorganic adhesive at normal temperature and different high temperatures, the microstructure and phase composition are investigated by means of X-ray diffraction (XRD) and SEM respectively. Results show that inorganic adhesive can resist at least 600 °C high temperature. Fire-resistance performance of inorganic adhesive can meet the requirements of fiber reinforced polymer (FRP) strengthened RC structures.

Keywords

strengthening / RC structures / CFRP sheets / inorganic adhesive / high-temperature resistance / microstructure

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