In this study, in order to assess the flexural reinforcing effects of fiber reinforced polymer (FRP) sheets for static and impact loading, flexural performances were tested with variables of types of fiber, sheets, and reinforcing methods. With the GFRP, CFRP,…
In this study, in order to assess the flexural reinforcing effects of fiber reinforced polymer (FRP) sheets for static and impact loading, flexural performances were tested with variables of types of fiber, sheets, and reinforcing methods. With the GFRP, CFRP, and AFRP sheets, 100×100×400 mm prismatic specimens were retrofitted to the bottom surface, to the U-strip at the center, and both ways. Flexural loading static tests and drop weight impact tests were carried out. The U-strip reinforced specimens did not increase the flexural strength. However specimens with a reinforced bottom surface and the specimens doubly rein- forced with CFRP and AFRP showed much higher strength than non-reinforced specimens. Because the U- strip reinforced specimens had the same direction as the cracks, they were governed only by the strength of resins. However, the specimens with a reinforced bottom surface and the doubly reinforced specimens showed much higher energy absorptions.