The Response of Reinforced Concrete Composite Beams Reinforced with Pultruded GFRP to Repeated Loads


  • Teghreed H. Ibrahim College of Engineering - University of Baghdad
  • Abbas A. Allawi College of Engineering - University of Baghdad



This paper investigates the experimental response of composite reinforced concrete with GFRP and steel I-sections under limited cycles of repeated load. The practical work included testing four beams. A reference beam, two composite beams with pultruded GFRP I-sections, and a composite beam with a steel I-beam were subjected to repeated loading. The repeated loading test started by loading gradually up to a maximum of 75% of the ultimate static failure load for five loading and unloading cycles. After that, the specimens were reloaded gradually until failure. All test specimens were tested under a three-point load. Experimental results showed that the ductility index increased for the composite beams relative to the reference specimen by 156.2% for a composite beam with GFRP with shear connectors, 148.6% for composite beams with GFRP without connectors, and 96% for the composite beam with a steel I-section.


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How to Cite

Ibrahim , T. H. . and Allawi, A. A. . (2023) “The Response of Reinforced Concrete Composite Beams Reinforced with Pultruded GFRP to Repeated Loads”, Journal of Engineering, 29(1), pp. 158–174. doi: 10.31026/j.eng.2023.01.10.