Effect of Glass Fiber Reinforced Polymer Wrapping on Strength of Confined Concrete
Keywords:
Glass fiber reinforced polymer (GFRP), Confined concrete, Compressive strength, Acid attack. Scanning electron microscope (SEM)Abstract
External wrapping with Fiber Reinforced Polymers (FRP) has been increasing in recent years for strengthening and retrofitting of concrete and steel structures. Hence an attempt has been made to investigate the compressive and tensile behavior of concrete specimens (cylinders) strengthened with GFRP. The parameters varied in this investigation were number of wraps (single and double wrapping) and curing period (wrapping after 7 and 28 days of water curing). The experimental result shows that the specimens wrapped with glass fiber reinforced polymers have higher compressive strength and tensile strength than the control specimens. For durability studies cylinders were immersed in acid solution (5 % H₂SO₄) for the period of 28 days. It was noticed that the damage due to acid attack was severe in control specimen than the wrapped cylinders.
