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http://dx.doi.org/10.12989/acc.2019.8.2.145

Experimental study on effect of EBRIG shear strengthening method on the behavior of RC beams  

Shomali, Amir (Department of Civil Engineering, Isfahan University of Technology (IUT))
Mostofinejad, Davood (Department of Civil Engineering, Isfahan University of Technology (IUT))
Esfahani, Mohammad Reza (Department of Civil Engineering, Ferdowsi University of Mashhad)
Publication Information
Advances in concrete construction / v.8, no.2, 2019 , pp. 145-154 More about this Journal
Abstract
The present experimental study addresses the structural response of reinforced concrete (RC) beams strengthened in shear. Thirteen RC beams were divided into four different sets to investigate the effect of transverse and longitudinal steel reinforcement ratios, concrete compressive strength change and orientation for installing carbon fiber-reinforced polymer (CFRP) laminates. Then, we employed a shear strengthening solution through externally bonded reinforcement in grooves (EBRIG) and externally bonded reinforcement (EBR) techniques. In this regard, rectangular beams of $200{\times}300{\times}2000mm$ dimensions were subjected to the 4-point static loading condition and their load-displacement curves, load-carrying capacity and ductility changes were compared. The results revealed that using EBRIG method, the gain percentage augmented with the increase in the longitudinal reinforcement ratio. Also, in the RC beams with stirrups, the gain in shear strength decreased as transverse reinforcement ratio increased. The results also revealed that the shear resistance obtained by the experimental tests were in acceptable agreement with the design equations. Besides, the results of this research indicated that using the EBRIG system through vertical grooves in RC beams with and without stirrups caused the energy absorption to increase about 85% and 97%, respectively, relative to the control.
Keywords
CFRP; shear strengthening; externally bonded reinforcement in grooves (EBRIG); externally bonded reinforcement (EBR); ductility;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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