Abstract
In seismic areas, ductility is an important factor in design of high strength concrete (HSC) members under flexure. A number of twelve HSC beams with different percentage of <TEX>${\rho}$</TEX> & <TEX>${\rho}^{\prime}$</TEX> were cast and incrementally loaded under bending. The effect of <TEX>${\rho}^{\prime}$</TEX> on ductility of members were investigated both qualitatively and quantitatively. During the test, the strain on the concrete middle faces, on the tension and compression bars, and also the deflection at different points of the span length were measured up to failure. Based on the obtained results, the serviceability and ultimate behavior, and especially the ductility of the HSC members are more deeply reviewed. Also a comparison between theoretical and experimental results are reported here.
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