FLEXURAL BEHAVIOR OF HIGH STRENGTH OVER REINFORCED CONCRETE BEAMS UNDER STATIC & REPEATED LOADING

The Flexural behavior of over reinforced sections is faster grown due to the popular retrofit technique among researchers and engineering worldwide. The main purpose of this work is to give a better and full understanding of the flexural behavior of over reinforced high strength concrete beams subjected to both static and repeated loading. Experimental tests were carried out on different beams having different grades of concrete and percentages of main steel under static or repeated loads. Concrete and steel strains and central deflection of cracking and ultimate loads were recorded for each tested beam. It is shown that the flexural behavior of over reinforced beams under repeated loading is quite different than that under static loading.