Affect of Reinforcement Constraints on Shrinkage and Creep Prediction Model of High Performance Concrete

Reinforcement constrains of reinforcement applying on concrete mainly depends on three factors: the grade of concrete (elastic modulus), section reinforcement and loading time. The lower grade of concrete, the smaller reinforcement ratio, the longer loading time all make an obvious influence of reinforcement constraints on shrinkage and creep. The simplified calculation formulas of three physical quantities are given respectively and verified in this paper, which considered the above three factors. The three physical quantities are the influence coefficient of reinforcement on creep strain, the influence coefficient of reinforcement on creep curvature, and the influence coefficient of reinforcement on the creep deflection.