Studi Eksperimental Pull Out Test Pada Tulangan GFRP Dengan Beton

This study investigates the bond behavior between Glass Fiber Reinforced Polymer (GFRP) reinforcement and concrete through pull-out testing, and compares the results with conventional steel reinforcement. The background of this research arises from the need to find corrosion-resistant alternatives to steel, especially in structures located in aggressive or coastal environments. Test specimens were made using concrete of 25 MPa compressive strength with 8 mm diameter GFRP and steel reinforcements embedded at lengths of 5db, and 15db. Additional tests, such as compressive strength of concrete and tensile strength of steel, were also conducted to support the analysis. The test results showed that steel reinforcement produced higher bond strength values, reaching up to 18.67 kN, whereas GFRP reached 8.78 kN. However, GFRP demonstrated consistent performance and superior corrosion resistance. The failure modes differed significantly: GFRP was prone to debonding, while steel typically exhibited yielding or fracture. These results suggest that GFRP, despite its lower bond strength, remains a promising alternative to steel in reinforced concrete structures, especially in areas where durability and resistance to corrosion are critical considerations