Effects of Different Environments on Reinforcement Concrete Corrosion

Abstract

The study on the effects of different environment on the corrosion properties of welded mild steel was evaluated using the weight loss analysis method. Chemical analysis was done on the mild steel plate using ARX spectrometer. Three sets of samples were used; two samples were not subjected to any corrosive environment. Two other samples were immersed in 0.3 M NaCl and the last two samples were immersed in water. Results showed that the un–welded samples exhibited greater loss in weight compared to the welded samples; the rates of corrosion of welded samples were observed to be lower in comparison with their un–welded counterparts in their corresponding corrosive environment, and the maximum values of corrosion rates of the samples were obtained for un–welded steel sample immersed in 0.3 M NaCl (1.924344 mg/mm2 /yr.); welded steel sample immersed in 0.3 M NaCl (0.509108 mg/mm2 /yr.); un–welded steel sample immersed in water (0.001821018 mg/mm2 /yr.); and welded steel sample immersed in water (0.000780731 mg/mm2 /yr.)