Research Progress of Interfacial Bond Properties Between FRP Bars and Seawater Sea-Sand Concrete
The use of seawater and sea-sand for replacing river water and river sand in the production of seawater sea-sand concrete(SWSSC)can effectively solve the problems of high transportation costs of construction material and long delivery time for islands and reefs,marine and harbor engineering structure construction.However,corrosion of steel bars is exacerbated by the use of ordinary steel bars and seawater sand concrete in marine structures.In recent years,the application of fiber-reinforced polymer(FRP)reinforcement instead of ordinary steel bars in SWSSC can effectively solve the problem of chloride-induced steel corrosion in SWSSC.In this paper,the degradation law of the interfacial bond performance between FRP reinforcement and SWSSC was summarized.The failure mechanisms of bond strength of FRP reinforcement-concrete under different environments were analyzed.The effects of fiber type,embedding length,reinforcement diameter,surface type of FRP reinforcement and compressive strength of concrete on interfacial bond performance were discussed.Furthermore,the existing bond-slip constitutive models were further summarized.This review can provide a scientific basis for practical application of FRP reinforcement in SWSSC.
seawater sea-sand concreteFRP barfailure modebond propertyconstitutive model
国家科技期刊平台
NSTL
万方数据
维普
