3138 SHEAR CRACKING BEHAVIOR OF ULTRA-HIGH-STRENGTH PRESTRESSED REINFORCED CONCRETE BEAMS

An experimental program was conducted to investigate the shear cracking behavior of both normal strength concrete and ultra-high-strength concrete I-shaped beams. All beams were tested by focusing on the influence of prestressing force and compressive strength of the concrete on the shear crack width. It was found that there is a linear relationship between shear crack width and stirrup strain in the both normal strength and ultra-high-strength concrete beams. Shear crack widths are smaller in ultra-high strength PRC beams.