Field test of a reinforced concrete bridge under marine environmental corrosion

被引：47

作者：

Zhou, Haijun ^{[1
,2
]}

Chen, Siyu ^{[2
]}

Du, Yanliang ^{[1
]}

Lin, Zhiyao ^{[2
]}

Liang, Xuebing ^{[2
]}

Liu, Jun ^{[2
]}

Xing, Feng ^{[2
]}

机构：

[1] Shenzhen Univ, Inst Urban Smart Transportat & Safety Maintenance, Shenzhen 518060, Peoples R China

[2] Shenzhen Univ, Guangdong Prov Key Lab Durabil Marine Civil Engn, Shenzhen 518060, Peoples R China

来源：

ENGINEERING FAILURE ANALYSIS | 2020年 / 115卷

基金：

中国国家自然科学基金;

关键词：

Reinforced concrete bridge; Steel bar; Corrosion; Failure; Marine environment; MECHANICAL DEGRADATION; STEEL; BEHAVIOR; CHLORIDE; BARS;

D O I：

10.1016/j.engfailanal.2020.104669

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper presents a case study on the failure of a reinforced concrete bridge due to marine environment corrosion in eastern Shenzhen, China. Over approximately 20 years, the concrete of the bridge pier had become cracked and spalled, and the stirrups were fractured due to the corrosion. Inspection and assessment of the concrete strength, cover depth, carbonation depth, and corrosion potential is carried out in this work. A sample of 29 corroded steel bars and 13 corroded stirrups collected from the bridge are also investigated for corrosion mass loss and mechanical testing in the laboratory. Findings show that the mechanical parameters of the corroded steel bars are gradually degraded with the increase of mass loss ratio. The chloride ion profile of the bridge structure concrete is also analyzed.

引用

页数：12

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