THERMO-ELASTIC-CREEP ANALYSIS OF MATURING CONCRETE

The ADINA program has a creep material model based on strain hardening and effective stress approach. Taylor Woodrow had the opportunity to investigate aspects of concrete behaviour associated with creep and shrinkage particularly in early age concrete. The study has led to modifications to the creep model to address following aspects: linear dependency of stress, age and temperature dependency of properties, creep flow, delayed elasticity and transitional thermal creep. The proposed creep model is mainly based on CEB-FIP 1978 recommendations. The paper highlights the mechanism of creep in concrete and proposes the procedure to implement in the code. Comparisons with published work are presented.