TEST ON MECHANICAL BEHAVIOR OF REINFORCED RECYCLED COARSE AGGREGTE CONCRETE BEAMS

In order to reveal the mechanical behaviour of reinforced recycled coarse aggregate concrete beams, 6 specimens were designed for test. The failure process and modes, loading deformation and loading-strain curve were obtained from the experiment. Based on the test data, the influence of recycle aggregate replacement ratio and shear span ratio to the bearing capacity were analysed. The results showed that reinforced recycled aggregate coarse concrete beam's failure pattern is similar to ordinary reinforced concrete beam, according to the shear span's difference, two type failure patterns were appeared, which are shear pressure failure and bending failure; shear span has obviously effect on the bearing capacity, yet the replacement only little effect.