Date of Award
2015
Publisher
North Dakota State University
Document Type
Thesis
Degree Awarded
Master of Science (MS)
Department
Civil and Environmental Engineering
College
Engineering
Faculty Advisor
Lin, Zhibin
Description
Welding is commonly used for connecting steel components in steel bridge fabrication and construction. Welding processes change the microstructures, properties of surrounding steel and its surface texture. In this study, an investigation of corrosion behavior of steel bridge welds was performed under simulated corrosive environments in the laboratory. Four electrochemical tests: a) open circuit potential, b) Rp/Ec Trend, c) electrochemical impedance spectroscopy and d) potentiodynamic polarization, were identified and conducted to gain fundamentals to weldment corrosion in two commonly used bridge steels (A572 and A588). In addition, three coating systems (3-coat, Calcium sulfonate alkyd, and metallizing coating) in steel bridges were deposited on the bridge steels. Test results revealed that the bridge steel welds exhibit higher corrosion initiation over base metals, regardless the types of steel or coating. The protective coating systems can delay the corrosion initiation at the welds, thus enhancing the corrosion resistance of bridge steel welds.
Recommended Citation
Al-Kaseasbeh, Qusay Adel, "Electrochemical Investigation of Corrosion Resistance of Weldments in Steel Bridges" (2015). Civil and Environmental Engineering. 56.
https://digitalcommons.ndsu.edu/civil-environmental-eng/56
Rights
NDSU Policy 190.6.2
Rights Link
https://www.ndsu.edu/fileadmin/policy/190.pdf
Author ORCID Identifier
0000-0002-8474-5194
Handle Identifier
https://hdl.handle.net/10365/27676