Hybrid Fibre Reinforced Concrete Beams Strengthened with Externally bonded GFRP Laminates

B. Parthiban, K. Suguna, P. N. Raghunath


This paper presents the results of experimental study conducted to examine the effectiveness of Glass Fibre Reinforced Polymer (GFRP) laminates on the performance of Hybrid fibre reinforced concrete beams. For the experimental investigation, a total of four beams of size 150mm x 250mm in cross section with a total length of 3000mm were cast and tested. Two beams were strengthened with Unidirectional Cloth Glass Fibre Reinforced Polymer (UDCGFRP) of 3mm and 5mm thickness. One beam served as base line specimen and the other was cast with 1% hybrid fibre volume fraction (80% of steel fibre and 20% of polyolefin fibre). All the beams specimens were subjected to four-point bending in a loading frame. The results show that GFRP strengthened hybrid fibre reinforced concrete beams exhibit improved performance in terms of load capacity, deformation capacity and ductility. The beams were also modeled using finite element software (ANSYS). The numerical results showed good agreement with the experimental results.


ANSYS, Ductility, FRP, Polyolefin fibre, Steel fibre

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