Title:
Flexural Strength and Behavior of Inverted T- Precast Concrete Beam Reinforced with Smooth CFRP Bars
Author(s):
John Myers
Publication:
Web Session
Volume:
ws_S24_Myers-Rashid.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
3/24/2024
Abstract:
This study conducts an experimental investigation on inverted-T precast concrete beams reinforced with smooth CFRP bars. The paper aims to evaluate the performances of precast concrete beam reinforced with smooth CFRP bars in terms the bond behavior between CFRP bars and concrete, serviceability and flexural strength. Altogether, nine specimens of CFRP bars embedded in 150 mm concrete cube were tested by pullout test to ascertain the bond behavior between CFRP bars and concrete. The surface of CFRP bars were treated in different methods in order to improve the bond strength. Later on, three sets of inverted-T precast concrete beams were experimentally tested under flexural test. Generally, the experimental results have indicated that the aspects of behavior between CFRP and steel reinforced beams were comparable before the first crack. However, both CFRP and steel reinforced beams behave in distinct way towards the ultimate load in terms of resisting the applied load, deflections, crack width and crack numbers. The results have also shown that reinforcement ratio affects the ultimate load as well as the deflection of the beams. Besides, higher strain in CFRP bars have been recorded for the beams with lower reinforcement ratio.