Table 4: The comparison between theoretical value and experimental value.

Number of specimensAxial compression ratioCorrosion rate (%)Experimental value (Fud/kN)Calculation value (Fud/kN)RatioExperimental value (Xud/mm)Calculation value (Xud/mm)Ratio

ZZ-10.27050.1552.651.0522.5421.070.94
Z-20.272045.7941.100.9013.2019.861.50
Z-30.271843.5442.010.9614.3219.981.40
Z-40.271842.2742.010.9913.2219.981.51
Z-50.272337.0137.231.0115.2019.231.27
Z-60.27649.6549.571.0022.3720.840.93
Z-70.272544.3736.380.8215.6219.071.22