Monitoring of Reinforcement Steel Corrosion Based on OFDR Distributed Optical Fiber

被引：0
|
作者：
Tian H. [1 ]
Tang F. [1 ]
Li H. [1 ]
机构：
[1] School of Civil Engineering, Dalian University of Technology, Dalian
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2020年 / 23卷 / 06期
关键词：
Corrosion monitoring; Distributed optical fiber; Mortar; Reinforcement steel corrosion;
D O I：
10.3969/j.issn.1007-9629.2020.06.035
中图分类号：
学科分类号：
摘要：
Three cylindrical mortar specimens containing 12, 16, 20mm diameter reinforcement steels were fabricated, and optical fiber was wrapped around the mortar cylinder in a spiral mode with a spacing of 100mm. Three specimens were subjected to accelerated corrosion test. Reinforcement steel corrosion was monitored with optical frequency domain reflectometer(OFDR) distributed optical fiber. During the accelerated corrosion test, strain data on the mortar surface induced by reinforcement steel corrosion were collected with OFDR optical fiber. Results show that corrosion of reinforcement steels causes surface cracking of mortar protective layer and results in appearance of strain peaks along the OFDR fiber. The magnitude of strain peak increases with an increase of corrosion-induced mass loss of reinforcement steel. At the same corrosion level, thinner protective layer (or bigger reinforcement steel) causes a higher cracking rate and consequently a bigger crack width. © 2020, Editorial Department of Journal of Building Materials. All right reserved.
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页码：1524 / 1530
页数：6
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共 25 条
  • [1] LI Hongnan, LI Chao, Research progress on life-cycle based bridge structural seismic performance evaluation and design method, China Journal of Highway and Transprot, 27, 10, pp. 32-45, (2014)
  • [2] SONG Xuefeng, ZHANG Xianyun, GAO Rui, Corrosion behavior of steel embedded in concrete under interaction of carbonation and chloride ion, Journal of Building Materials, 17, 5, pp. 892-895, (2014)
  • [3] SHI Jinjie, SUN Wei, Recent research on steel corrosion in concrete, Journal of the Chinese Ceramic Society, 38, 9, pp. 1753-1764, (2010)
  • [4] HOU Baorong, The cost of corrosion in China, pp. 1-2, (2017)
  • [5] JIN Weiliang, Corroded concrete structures, pp. 1-2, (2011)
  • [6] LI Hongnan, LI Dongsheng, Safety assessment, health monitoring and damage diagnosis for structures in civil engineering, Earthquake Engineering and Engineering Vibration, 22, 3, pp. 82-90, (2002)
  • [7] WAN J, LIU T J, QIAO G F., Qualitative and quantitative sensors based on electrochemical techniques for the corrosion assessment of RC panels, IEEE Sensors Journal, 12, 6, pp. 2062-2063, (2012)
  • [8] QIAO G F, LIU T J, HONG Y, Et al., Optimization design of a corrosion monitoring sensor by FEM for RC structures, IEEE Sensors Journal, 11, 9, pp. 2111-2112, (2011)
  • [9] HE Hongzhu, CUI Yuli, SHI Meilun, Real time monito-ring of corrosion of rebar in concrete, Journal of Building Materials, 16, 1, pp. 50-54, (2013)
  • [10] HE Hongzhu, CUI Yuli, SHI Meilun, Et al., Measurement of corrosion of rebar in concrete by silver coulometer, Journal of Building Materials, 16, 4, pp. 572-575, (2013)
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