The considered concretes include ordinary portland cement (OPC)、High Strength Concrete( HSC) and High performance Concrete ( HPC)with the water to binder 0.53、0.35 and 0.27 under three different conditions. This study revealed that the relative dynamic elastic modulus of concrete went through strengthen and deterioration stages subjected to stress corrosion under three conditions

the length of time of these stages are closely related with test environment and concrete type.With the increase of water to binder

the ratio of deterioration was increased

and the length of strength stages was decreased. Immersing drying+30%loading action significantly accelerated the process of stress corrosion damage. Under the action of Immersingdrying +30% load

strengthen section of the length of OPC shorter  67%

compared with the length of time at exposure salt lake. The effect of immersing and drying

HSC Immersingdrying cycles when the stress strength occurred were longer 1.8 times than the OPC and HPC. HSC showed more resistance to stress corrosion in the salt lake regions of china.