{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,1]],"date-time":"2026-03-01T02:36:06Z","timestamp":1772332566080,"version":"3.50.1"},"reference-count":25,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2011,11,16]],"date-time":"2011-11-16T00:00:00Z","timestamp":1321401600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this paper, a novel kind of method to monitor corrosion expansion of steel rebars in steel reinforced concrete structures named fiber optic coil winding method is proposed, discussed and tested. It is based on the fiber optical Brillouin sensing technique. Firstly, a strain calibration experiment is designed and conducted to obtain the strain coefficient of single mode fiber optics. Results have shown that there is a good linear relationship between Brillouin frequency and applied strain. Then, three kinds of novel fiber optical Brillouin corrosion expansion sensors with different fiber optic coil winding packaging schemes are designed. Sensors were embedded into concrete specimens to monitor expansion strain caused by steel rebar corrosion, and their performance was studied in a designed electrochemical corrosion acceleration experiment. Experimental results have shown that expansion strain along the fiber optic coil winding area can be detected and measured by the three kinds of sensors with different measurement range during development the corrosion. With the assumption of uniform corrosion, diameters of corrosion steel rebars were obtained using calculated average strains. A maximum expansion strain of 6,738 \u03bc\u03b5 was monitored. Furthermore, the uniform corrosion analysis model was established and the evaluation formula to evaluate mass loss rate of steel rebar under a given corrosion rust expansion rate was derived. The research has shown that three kinds of Brillouin sensors can be used to monitor the steel rebar corrosion expansion of reinforced concrete structures with good sensitivity, accuracy and monitoring range, and can be applied to monitor different levels of corrosion. By means of this kind of monitoring technique, quantitative corrosion expansion monitoring can be carried out, with the virtues of long durability, real-time monitoring and quasi-distribution monitoring.<\/jats:p>","DOI":"10.3390\/s111110798","type":"journal-article","created":{"date-parts":[[2011,11,16]],"date-time":"2011-11-16T20:34:54Z","timestamp":1321475694000},"page":"10798-10819","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":76,"title":["Brillouin Corrosion Expansion Sensors for Steel Reinforced Concrete Structures Using a Fiber Optic Coil Winding Method"],"prefix":"10.3390","volume":"11","author":[{"given":"Xuefeng","family":"Zhao","sequence":"first","affiliation":[{"name":"School of Civil Engineering, Dalian University of Technology, Dalian 116024, China"}]},{"given":"Peng","family":"Gong","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Dalian University of Technology, Dalian 116024, China"}]},{"given":"Guofu","family":"Qiao","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China"}]},{"given":"Jie","family":"Lu","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Dalian University of Technology, Dalian 116024, China"}]},{"given":"Xingjun","family":"Lv","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Dalian University of Technology, Dalian 116024, China"}]},{"given":"Jinping","family":"Ou","sequence":"additional","affiliation":[{"name":"School of Civil Engineering, Dalian University of Technology, Dalian 116024, China"},{"name":"School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China"}]}],"member":"1968","published-online":{"date-parts":[[2011,11,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bentur, S., and Diamond, N.S. 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Corrosion of Steel in Concrete, RILEM Technical Committe 60-CSC, Chapman & Hall."},{"key":"ref_5","first-page":"389","article-title":"Elsener Corrosion of Steel in Concrete","volume":"II","author":"Schutze","year":"2000","journal-title":"Corrosion and Environmental Degradation"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"459","DOI":"10.1016\/S0958-9465(02)00086-0","article-title":"Reinforcement corrosion in concrete structures, its monitoring and service life prediction\u2014A review","volume":"25","author":"Ahmad","year":"2003","journal-title":"Cem. Concr. Compos"},{"key":"ref_7","unstructured":"Tang, L.P. (2007). Calibration of the Electrochemical Methods for the Corrosion Rate Measurement of Steel in Concrete, NORDTEST Project; No.1531-01,."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"545","DOI":"10.1016\/j.cemconcomp.2009.05.007","article-title":"Examples of reinforcement corrosion monitoring by embedded sensors in concrete structures","volume":"31","author":"Andrade","year":"2009","journal-title":"Cem. Concr. Compos"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"8008","DOI":"10.1016\/j.electacta.2007.06.070","article-title":"Corrosion monitoring of reinforcing steel in cement mortar by EIS and ENA","volume":"52","author":"Qiao","year":"2007","journal-title":"Electrochim. Acta"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1077","DOI":"10.1016\/j.optlaseng.2009.04.016","article-title":"Applications of optical fibre bragg gratings sensing technology-based smart stay cables","volume":"47","author":"Li","year":"2009","journal-title":"Opt. Lasers Eng"},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Glisic, B., Inaudi, D., and Casanova, N. (2010, January 7\u201311). SHM Process as Perceived Through 350 Projects. San Diego, CA, USA.","DOI":"10.1117\/12.852340"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"011701:1","DOI":"10.1115\/1.3062942","article-title":"Long-range pipeline monitoring by distributed fiber optic sensing","volume":"132","author":"Inaudi","year":"2010","journal-title":"J. Press. Vessel Technol"},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Ansari, F. (2005). Fiber optic health monitoring of civil structures. Smart Mater. Struct, 14.","DOI":"10.1088\/0964-1726\/14\/3\/001"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1006\/ofte.2000.0344","article-title":"Industrial application of the BOTDR optical fiber strain sensor","volume":"7","author":"Ohno","year":"2001","journal-title":"Opt. Fiber Technol"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1177\/1045389X04039263","article-title":"Distributed strain sensing from damaged composite materials based on shape variation of the Brillouin spectrum","volume":"15","author":"Murayama","year":"2004","journal-title":"J. Intel. Mater. Syst. Struct"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1117\/12.238843","article-title":"Embedded chloride detectors for roadways and bridges","volume":"2719","author":"Fuhr","year":"1996","journal-title":"Proc. SPIE"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1117\/12.207708","article-title":"Monitoring of corrosion in large steel structures using low cost optical fiber sensors","volume":"2446","author":"Bennett","year":"1995","journal-title":"Proc. SPIE"},{"key":"ref_18","first-page":"3330","article-title":"Fiber optic corrosion sensor fabricated by electrochemical method","volume":"126","author":"Li","year":"1998","journal-title":"Proc. SPIE"},{"key":"ref_19","unstructured":"Chase, S.B., and Aktan, A.E. (2001, January 6\u20138). Strain Measurement of the Steel Beam with the Distributed Brillouin Scattering Sensor. Newport Beach, CA, USA."},{"key":"ref_20","first-page":"468","article-title":"Embedded optic fiber crack sensor for reinforced concrete structures","volume":"97","author":"Gu","year":"2000","journal-title":"ACI Struct. J"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1109\/68.34756","article-title":"Tensile strain dependance of Brillouin frequency shift in silica optical fibers","volume":"1","author":"Horiguchi","year":"1989","journal-title":"Photon. Technol. Lett"},{"key":"ref_22","first-page":"18","article-title":"Measurement of strain distribution in structures using optical fiber","volume":"82","author":"Kurashima","year":"1997","journal-title":"JSCE J"},{"key":"ref_23","unstructured":"Bao, X.Y., Zou, L.F., Yu, Q.R., and Chen, L. (2004, January 24\u201327). Development and Applications of the Distributed Temperature and Starin Sensors based on Brillouin Scattering. Vienna, Austria."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Fellay, A., Thevenza, L., Perez Garcia, J., Facchini, M., Scandale, W., and Robert, P. (2002, January 10). Brillouin-based temperature sensing in optical fibres down to 1 k. Portland, USA.","DOI":"10.1109\/OFS.2002.1000562"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Horiguchi, T., Shimizu, K., Kurashima, T., Tateda, M., and Koyamada, Y. (1995). Development of a distributed sensing technique using Brillouin scattering. J. 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