Flexural behavior of full-scale, carbon-fiber-reinforced polymer prestressed concrete beams

[摘要] Today’s highway bridge construction almost exclusively uses steel prestressing strands for prestressedconcrete beams. Prestressing steel is susceptible tocorrosion-induced degradation when exposed to aggressiveenvironments. Corrosion can result in the deterioration ofthe serviceability and strength of highway bridge beams.These concerns have led to the use of nonmetallic prestressing elements made of glass-fiber-reinforced polymer(GFRP), aramid-fiber-reinforced polymer (AFRP), andcarbon-fiber-reinforced polymer (CFRP) materials, whichare collectively referred to as fiber-reinforced polymers(FRPs). Among FRPs, CFRP has the greatest potential toreplace steel strands and provide corrosion-free prestressedconcrete bridge girders when combined with corrosion-resistant transverse reinforcement.

[学科分类] 建筑学