Experimental and Analytical Study of Residual Yield and Tensile Strengths in Partially Corroded Structural Steel

Abstract

Corrosion has been one of the main structural degradation processes and has been the root cause of many engineering structural failures around the world. Therefore, proper understanding of corrosion process and especially residual strength measurement is an important consideration in the engineering discipline. This study was performed to find the residual strengths of partially corroded steel using a cost effective reliable method which can be adopted easily. For that, Average Weight Ratio (AWR) was introduced instead of the Minimum Thickness Ratio (MTR), proposed by previous researchers. In this context, partially corroded steel specimens were subjected to accelerated corrosion tests in a corrosion incubator. There, correlations were built between hardness verses AWR, ultimate tensile strength verses AWR and ultimate tensile strength ratio verses AWR of partially corroded steel.