Three-dimensional corrosion pit measurement and statistical mechanical degradation analysis of deformed steel bars subjected to accelerated corrosion

被引：149

作者：

Tang, Fujian ^{[1
]}

Lin, Zhibin ^{[2
]}

Chen, Genda ^{[1
]}

Yi, Weijian ^{[3
]}

机构：

[1] Missouri Univ Sci & Technol, Dept Civil Architectural & Environm Engn, Rolla, MO 65409 USA

[2] N Dakota State Univ, Dept Civil & Environm Engn, Fargo, ND 58018 USA

[3] Hunan Univ, Coll Civil Engn, Changsha 410082, Hunan, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2014年 / 70卷

基金：

美国国家科学基金会;

关键词：

Steel bar; Corrosion pit; 3D scan; Tensile strength; Fracture; Statistical analysis; REINFORCED-CONCRETE BEAMS; PITTING CORROSION; BRITTLE-FRACTURE; FATIGUE BEHAVIOR; RC BEAMS; TENSILE; DUCTILITY; RELIABILITY; INITIATION;

D O I：

10.1016/j.conbuildmat.2014.08.001

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

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.

引用

页码：104 / 117

页数：14

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