Three-Dimensional Corrosion Pit Measurement and Statistical Mechanical Degradation Analysis of Deformed Steel Bars Subjected to Accelerated Corrosion

Abstract

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.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Statistical Analysis; Bars (Metal); Brittle Fracture; Ductile Fracture; Fracture; Mechanical Properties; Statistical Methods; Tensile Strength; Tensile Testing; 3-D Scans; Accelerated Corrosion; Corroded Steel Bars; Corrosion Pits; Cross Sectional Area; Mechanical Degradation; Property Degradation; Steel Bars; Deformed Steel Bar

International Standard Serial Number (ISSN)

0950-0618

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2014 Elsevier Ltd, All rights reserved.

Publication Date

01 Nov 2014

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