A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Study on bond performance between seawater sea-sand concrete and BFRP bars under chloride corrosion
Highlights Bond performance between FRP bars and SSWSC with corrosion of chloride was investigated. Effects of various factors were revealed (such as temperature, deficiency of protection). The prediction of time-varying degradation of BFRP bar bond strength was put forward. The damage factors of ultimate bond strength were predicted in real service environment.
Abstract In this paper, based on the corrosion of chloride, the interfacial bonding performance between seawater sea-sand concrete (SSWSC) and BFRP bars was tested by eccentric pull-out test. The results show that with the increase of corrosion age, increasing chloride concentration and temperature will aggravate the degradation of the bonding performance between BFRP bars and seawater sea-sand concrete. Increasing the thickness of concrete protective layer and decreasing the diameter of BFRP bars are beneficial to the improvement of bond strength. Based on Bank’s life prediction model and Arrhenius acceleration theory, the bond strength between seawater sea-sand concrete and BFRP bars under the cyclic action of chloride corrosion in 50 years is predicted, and it is predicted that the damage factor will be less than 0.6 after 50 years of service, and the damage factor will gradually increase with the increase of temperature.
Study on bond performance between seawater sea-sand concrete and BFRP bars under chloride corrosion
Highlights Bond performance between FRP bars and SSWSC with corrosion of chloride was investigated. Effects of various factors were revealed (such as temperature, deficiency of protection). The prediction of time-varying degradation of BFRP bar bond strength was put forward. The damage factors of ultimate bond strength were predicted in real service environment.
Abstract In this paper, based on the corrosion of chloride, the interfacial bonding performance between seawater sea-sand concrete (SSWSC) and BFRP bars was tested by eccentric pull-out test. The results show that with the increase of corrosion age, increasing chloride concentration and temperature will aggravate the degradation of the bonding performance between BFRP bars and seawater sea-sand concrete. Increasing the thickness of concrete protective layer and decreasing the diameter of BFRP bars are beneficial to the improvement of bond strength. Based on Bank’s life prediction model and Arrhenius acceleration theory, the bond strength between seawater sea-sand concrete and BFRP bars under the cyclic action of chloride corrosion in 50 years is predicted, and it is predicted that the damage factor will be less than 0.6 after 50 years of service, and the damage factor will gradually increase with the increase of temperature.
Study on bond performance between seawater sea-sand concrete and BFRP bars under chloride corrosion
Junyan, Dai (author) / Shiping, Yin (author) / Fengjuan, Lin (author) / Pengjie, Dong (author)
2023-02-10
Article (Journal)
Electronic Resource
English