EXPERIMENT RESEARCH ON BOND PROPERTIES BETWEEN SELF - COMPACTING CONCRETE AND REINFORCEMENT

The bond characteristics between reinforcement and self-compacting concrete were analyzed experimentally. The tests were conducted on two series of 28 self-compacting concrete specimens including concrete strength and workability. All specimens were pulled out by an electro hydraulic servo device. Influence laws such as ultimate bond strength (τu), each stage bond stiffness (K1, K2, K3) and degradation rate (λ) were obtained under every parameter. Based on the results and applicability, the regression equation for bond-slip relationship was obtained and was validate by test results. The regression equation agrees well with the test results. The research results can help to engineering design and scientific research.