Abstract
Using the same water to binder ratio and the same ratio of reinforcement, the three recycled aggregate concrete are made in different replacement ratio of recycled coarse aggregate which is 0%, 30%, 75% and 100%. Through experimental the beams flexural performance is researched, the right sections bearing deformation performance and damage distinction. The result shows that the damage model and the damage process are basically the same; the right sections mean strain is uniform to plane section assumption. With the increase in the replacement ratio of recycled coarse aggregate, the value of recycled concrete beams cracking moment, yielding bend moment and ultimate moment are all decreasing, the deflection and the maximum crack depth is increasing and the maximum crack depth is decreasing. The experimental and theoretical analysis shows that the existing norms formula is accurately applied in calculating the recycled concrete beams ultimate moment, and the formula is need to be amendment when calculating the cracking moment.
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