Neutral Axis Depth versus Flexural Ductility in High-Strength Concrete Beams

摘要: This paper presents an experimental study on the evolution of neutral axis’s depth failure with ductility at bending high-strength concrete beams. Nineteen simply supported beams were tested and analyzed. Each beam was loaded by two symmetrical concentrated loads applied approximately span’s thirds. The strength longitudinal tensile reinforcement ratio vary from to beam. As far as is concerned, indexes defined in order characterize such property. ductility’s influence value axis’ analyzed discussed. From program, seams be a valuable parameter preview ductility. Therefore, practical rule limiting critical sections presented some codes practice for normal can extended concrete.