Impact assessment of effectiveness of thiourea and THAM for corrosion process on carbon steel in calcium chloride environment

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Published: Jun 1, 2016
DOI: https://doi.org/10.24358/Bud-Arch_16_152_09
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DOI

https://doi.org/10.24358/Bud-Arch_16_152_09

Authors

Szymon Malinowski

s.malinowski@pollub.pl

Department of Geotechnical Engineering; Faculty of Civil Engineering and Architecture; Lublin University of Technology, Poland
Justyna Jaroszyńska-Wolińska

j.wolinska@gmail.com

Department of Geotechnical Engineering; Faculty of Civil Engineering and Architecture; Lublin University of Technology, Poland

Abstract

The main objective of this paper is to present a comparison of the corrosion inhibiting effect of thiourea and THAM (tri(hydroxymethyl)aminomethane) on carbon steel samples immersed in calcium chloride solutions. The testing has shown that to inhibit the corrosive action of the calcium chloride solution, the thiourea solution can be successfully replaced by the THAM solution. The study was performed with the use of st3s, structural and reinforcing steel. In the case of st3s steel samples, the application of the 0.01% THAM solution causes a decrease of its weight loss by about 60%. The application of a 10-times stronger THAM solution causes an increase of the corrosion inhibition on the tested samples by about 20%. A combined protective action of the thiourea and THAM solutions brings about an increase of the corrosion process inhibition by about 70% both for the st3s and the structural samples. The 0.01% and 0.1% THAM solutions applied t0 inhibit the corrosion process on structural samples cause an increase of the corrosion protection by about 50% and 15% respectively.

Keywords:

corrosion inhibitor, thiourea, THAM, carbon steel, anticorrosive properties

References

Article Details

Malinowski, S. and Jaroszyńska-Wolińska, J. (2016) “Impact assessment of effectiveness of thiourea and THAM for corrosion process on carbon steel in calcium chloride environment”, Budownictwo i Architektura, 15(2), pp. 064–072. doi: 10.24358/Bud-Arch_16_152_09.