Abstract：More and more waste tires bring serious environmental problems. Taking waste tire rubber particles as concrete aggregate can reduce pollution and the use of natural aggregate. Here, static bending-tensile tests and fatigue bending-tensile tests under different loadings were conducted for rubber self-compacting concrete beams using the hydraulic closed loop servo material testing machine MTS322. The fracture behavior of rubber self-compacting concrete beams under 3-point bending was studied systematically, and their fatigue failure laws under different loading stress levels and stress ratios were discussed to obtain the mathematical relationship between the ratio of stress field strength factor to fracture toughness and the logarithm of fatigue times. The fatigue damage prediction model of rubber self-compacting concrete was established. In test process, the acoustic emission (AE) technique was used to measure AE signals inside rubber self-compacting concrete beam under cyclic load in real time. The characteristics of crack development in rubber self-compacting concrete beam under different loading stress levels and stress ratios were compared. It was shown that the growth of inner cracks of rubber self-compacting concrete beam is divided into three stages; the lower the loading stress level, the more serious the fatigue damage degree inside rubber self-compacting concrete beam.
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