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Numerical analysis of reinforced concrete beams with GFRP bars: a systematic review of the literature
DOI:
https://doi.org/10.5216/reec.v20i2.78841Keywords:
Polymer composites, Durability, Finite element method, Glass fiber reinforced polymer, Systematic reviewAbstract
ABSTRACT: The use of Glass Fiber Reinforced Polymer (GFRP) bars as partial or total substitutes for traditional steel bars has significant advantages for structural elements, such as increased load-bearing capacity. However, the lack of comprehensive research on this material and its properties has led to significant challenges in understanding its potential for use and consequent dissemination in the construction industry. The lack of in-depth research and the absence of effective methods for simulating the performance of GFRP bars in reinforced concrete discourage their adoption in construction. In this context, this article aims to carry out a systematic review of numerical simulations using GFRP bars in concrete beams, highlighting the most widely used methods in these simulations. Therefore, this review not only highlights the technical and scientific advances on the subject but also provides a solid basis for future research and the wider acceptance and use of GFRP bars in civil construction. The main results show that GFRP bars significantly increase the flexural strength of concrete beams but have lower ductility due to their brittle behavior. The use of the finite element method with software proved effective in predicting structural behavior. A variation in the elastic modulus values of the bars was also observed which highlights the need for standardization.
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