Shear capacity of reinforced concrete beams strengthened with web side bonded CFRP sheets

Author:

Thamrin Rendy,Zaidir ,Haris Sabril

Abstract

The shear capacity of reinforced concrete beams strengthened with web side bonded carbon fiber-reinforced polymer (CFRP) sheets was measured experimentally. Nine reinforced concrete beams without stirrups; three control beams and six beams strengthened with minimal application of web side bonded CFRP sheets, were tested. The test variables were ratio of longitudinal reinforcement (1%, 1.4%, and 2.4%) and angle of application of CFRP sheets (450 and 900). The test results show that reinforced concrete beams strengthened with web side bonded CFRP sheets have higher shear capacity compared to the control beams. Shear capacity of strengthened beams with 450 angle of application of CFRP sheets is similar to that of beams strengthened with 900 angles. Beams with 1% of longitudinal reinforcement ratio failed in flexural mode indicated by concrete crushing in compression zone while beams with higher longitudinal reinforcement ratio (1.4% and 2.4%) failed in brittle mode as indicated by delamination of the concrete cover.

Publisher

EDP Sciences

Subject

General Medicine

Reference17 articles.

1. American Concrete Institute (ACI), Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures (ACI 440.2R-17), Farmington Hills, MI, USA, (2017)

2. Khalifa A., Belarbi A., and Nanni A., Shear performance of RC members strengthened with externally bonded FRP wraps, Proceedings of the 12th World Conference on Earthquake Engineering, Auckland, New Zealand, Paper 305, 1–10, (2000)

3. Barros J.A.O., and Dias S.J.E., Shear strengthening of reinforced concrete beams with laminate strips of CFRP, Proceedings of the International Conference Composites in Constructions, 289–294, (2003)

4. Efficient CFRP Strap Configurations for the Shear Strengthening of Reinforced Concrete T-Beams

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