Flexural Behavior of UHPC Beams Prestressed with External CFRP Tendons

This paper presents an experimental investigation on the flexural behavior of ultra-high-performance concrete (UHPC) beams prestressed with external carbon fiber-reinforced polymer (CFRP) tendons. A total eight T-shaped beam specimens were fabricated and tested, effects effective prestressing stress, partial ratio, deviated angle, loading condition analyzed. The results indicate that fully experienced a brittle failure, shear capacity these was mainly controlled by stress in CFRP tendons ultimate tensile strength UHPC, whereas partially failed ductile manner. presence internal steel reinforcement could significantly improve deformation ability. Thus, reinforcements should not be omitted from UHPC higher resulted enhanced cracking load capacity. angle utilization efficiency high exerted slight influence specimens. Moreover, method considering effect fibers proposed verified to predict