The 4th Asian Concrete Federation Symposium on Emerging Technologies for Structural Longevity (ACF2023- ETSL)

86 / 2022-04-16 21:40:07

Integrated technology of electrochemical chloride extraction and reinforcement of corroded reinforced concrete

Integrated technology,electrochemical chloride extraction,reinforcement,corroded reinforced concrete,MPC-CFRP

The corrosion of steel bars caused by chloride corrosion leads to the failure of reinforced concrete structure. Therefore, carrying out electrochemical dechlorination and repair reinforcement of reinforced concrete polluted by chloride has important theoretical value and practical engineering significance. This study applies magnesium phosphate cement (MPC) as the conductive bonding material, connecting Carbon Fibre Reinforced Plastics (CFRP) to form MPC-CFRP composite material, which integrates dechlorination and reinforcement of corroded concrete. The basic properties and modification technology of MPC materials, the method to design anode parameters of MPC-CFRP, the effect of electrochemical chlorine removal on the microstructure, macroscopic and mechanical properties, as well as the seismic performance of reinforced concrete have been introduced. The dechlorination conditions to ensure the better comprehensive performance of reinforced concrete are proposed.