Experimental investigation on the bond behavior of the GFRP bars with one-part geopolymer concrete and conventional concrete

The current study investigates the binding behavior of steel bars and GFRP in ordinary Portland cement concrete (OPCC) and one-part geopolymer concrete (OPGC). The maximum pullout load as well as features at failure were examined in relation to the kind of concrete, bar diameter, and bar type. In one-part geopolymer concrete along with regular concrete, the pullout strengths and also adhesive properties of GFRP bond specimens were contrasted with steel bar specimens. An energy-based identical bond strength strategy was taken into consideration in order to suggest the bond durability at peak load. This showed that a bigger diameter results in a faster rate of strength decline, along with a decline in bond performance. Pullout load was observed in bond specimens with smaller diameters, where bond strength regulated the shear strength within the GFRP bars along with ribs. In specimens of conventional concrete and one-part geopolymer concrete with diameters of 12 and 16 mm. There was evidence of concrete split failure, where the shear strength of the concrete determines the bond strength. The bond strength is positively impacted by rises in concrete’s compressive strength, that spans from 14.57 to 32.12%.