Effects of bonding on Fiber Bragg Grating (FBG) sensor for monitoring steel corrosion condition in concretes

被引：8

作者：

Zhou, Haijun ^{[1
]}

Wang, Yunjia ^{[1
,2
]}

Zhou, Zonglong ^{[1
]}

Ma, Cong ^{[1
]}

机构：

[1] Shenzhen Univ, Intelligent Transportat & Safety Operat & Maintena, Coll Civil & Transportat Engn, Key Lab Coastal Urban Resilient Infrastruct,Minist, Shenzhen 518060, Peoples R China

[2] Room 1302,ZhiLi Bldg,Rd 3688,Nanhai Ave, Shenzhen, Guangdong, Peoples R China

来源：

MEASUREMENT | 2023年 / 222卷

基金：

中国国家自然科学基金;

关键词：

Reinforcement corrosion; FBG; Sensor; Concrete; Monitoring; REINFORCED-CONCRETE; ACOUSTIC-EMISSION; DAMAGE; REBAR; BARS;

D O I：

10.1016/j.measurement.2023.113565

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Steel corrosion in concrete is harmful but invisible. Until now, it is still very hard to measure the steel corrosion condition by non-destructive method accurately. In this paper, Fiber Bragg Grating (FBG) sensors include single and three grating sensors, are proposed to bond with steel bar and embed in concrete for monitoring the steel corrosion condition. The steel corrosion condition is evaluated by the corrosion ratio and volume expansion coefficients of steel, which are derived from the wavelength shift of FBG. Bonding materials and bonding ways are investigated in detail for improving the accuracy of FBG sensors. The mechanism of bonding effects on FBG sensor for optimizing the accuracy, has been discussed. The results suggested that the steel corrosion condition is successfully monitored by calculating the corrosion ratio of 2.02-4.24%, and volume expansion coefficient of 2.18-2.65 in this test. The research work is more quantify than the traditional methods for monitoring the steel corrosion condition in concretes. It is helpful for ensuring the safety operation of infrastructures efficiently.

引用

页数：12

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