Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 70, Issue -, Pages 104-117Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2014.08.001
Keywords
Steel bar; Corrosion pit; 3D scan; Tensile strength; Fracture; Statistical analysis
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Funding
- U.S. National Science Foundation [CMMI-0900159]
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This study experimentally investigated the effect of corrosion non-uniformity on the mechanical property degradation of deformed steel bars. Both the average and critical cross-sectional areas were determined using a 3D laser scanner. Tensile test results and statistical analysis showed that both the yield and ultimate loads linearly decreased with an increase of corrosion loss while the elongation and ductility decreased exponentially. Corrosion did not affect the yield and ultimate strength based on the critical cross-sectional area. Mixed brittle and ductile fracture occurred in uncorroded steel bars while brittle fracture initiated at corrosion pits and propagated outwards in corroded steel bars. Published by Elsevier Ltd.
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