Mechanical Properties of Reinforced Concrete Under Ultra-Low Temperature Coupled with Load

In order to explore the mechanical properties of reinforced concrete members under action ultra-low temperature and load coupling, research group carried out flexural axial tension test beam temperature. The results show that tensile stiffness increases nonlinearly when decreases from 0°C –100°C. When is below –100°C, almost remains unchanged. drops –165°C, constraint strain between reinforcement in caused by cannot be ignored should considered design.