Anticorrosion Performances of Reinforced Concrete Structure Retrofitted With FRP

Fiber reinforced polymer/plastic (FRP) being relatively watertight and airtight can resist corroding.This paper researches the resistance to corrosion of reinforced concrete structure retrofitted with FRP.The differences of anticorrosion performances between FRP and two common anticorrosion materials (silicon alkyl and Sika903) are compared.The influence on the anticorrosion performances of reinforced concrete structure retrofitted with different types of FRP and the epoxy is analyzed.Results show that the rust-resisting materials used in this test have different anticorrosion performances.The theoretical corrosion rates of specimens wrapped with CFRP,BFRP and PEFRP are 14%,23.6% and 17.2% of the control specimens.The theoretical corrosion rate of specimens protected by silicon alkyl is 22.5% of the control specimens,and there is little difference in theoretical corrosion rates between the specimens protected by silicon alkyl and the wrapped Frps.Anticorrosion performances of specimens protected by Sika903 is slightly inferior to that of other rust-resisting materials used in this test,and the theoretical corrosion rate is 44.3% of the control specimens.Specimens protected by epoxy alone also show excellent anticorrosion performance.The theoretical corrosion rate is 20.7% of the control specimens.