| Title |
Experimental Study on Ductility Behavior of Reinforced Concrete Columns Using Ultimate High Strength Concrete |
| Abstract |
Rienforced concrete(RC) columns using ultimate-high strength concrete(870kg/㎠) are subjected to combined stress flexure, axial loading, and shear loading during seismic disturbance. The designer must ensure that a shear failure of these structural members never occur. Current design, however, codes8) for the shear strength of RC members are based on experimental result with relatively lower strength concrete. Therefore, the objective of this study was to study investigated shear behavior, including failure patterns, of ultimate-high strength concrete RC columns subjected to axial compression and cyclic lateral loads Seven columns with and without shear reinforcement were tested to determine their ultimate shear capacitties and maximum moment and compare Primary curve. Stiffness degradation, energy absorption capacity. As a result, the current code equation for predicting shear capacitties of columns was found to cannot be applicable to the columns fabricated with ultimate high strength concrete. Because the strength of ultimate-high strength concrete RC columns is over estimated when code requirements are utilized. |