Innovative Corrosion Monitoring of Steel Embedded In Concrete

Premature corrosion of steel encased in concrete is a major concern for engineers and infrastructure managers all over the world. Steel encased in concrete corrodes under the influence of moisture, chlorides, and oxygen in the field environment. This problem is further compounded with the use of deicing salt in the winter months. A low cost and versatile corrosion monitoring technique that uses electrical resistivity sensors developed in this study and commercially available temperature/humidity sensors has been proposed. These sensors are low cost and durable, and can be embedded in concrete members (e.g., beams, columns) during casting. Data from the sensors can be used to infer moisture and chloride ingress during the structure’s service life, and also in evaluating the potential corrosion of embedded steel. This paper presents laboratory and field results obtained using the proposed technique to demonstrate its usefulness. The paper also highlights the simplicity, versatility, and ease of use of this innovative technique. Finally, field results obtained after installing the sensors during bridge rehabilitation work in East Lynn, West Virginia, prove the applicability of this technique in situations where conventional corrosion monitoring techniques cannot be used.

References
  • Song, H.-W., and Velu Saraswathy, “Corrosion Monitoring of Reinforced Concrete Structures - A Review,” International Journal of Electrochemical Science, 2, 1-28, 2007.
  • GangaRao, H. V., Narendra Taly, and P. V Vijay, Reinforced Concrete Design with FPP Composites, London, CRC Press, 2007.
  • Mallick, P. K., Fiber-Reinforced Composites: Materials, Manufacturing and Design, third edition, London, CRC Press, 2007.
  • Xing, L., David Darwin, and JoAnn Browning, Evaluation of Multiple Corrosion Protection Systems and Corrosion Inhibitors for Reinforced Concrete Bridge Decks. Research Report, FHWA Contract No. DTFH61-03-C-00131, KDOT Contract Nos. C1131 and C1281, 2010.
  • ASTM C 876-09, Standard Test Method for Corrosion Potentials of Uncoated Reinforcing Steel in Concrete. West Conshohocken, PA, ASTM International, 2009, Retrieved May 29, 2014.
  • Kavi, J., Nondestructive Evaluation of Corrosion in Reinforced Concrete Structures with or without FRP Wraps. M.S. Thesis, Department of Civil and Environmental Engineering, West Virginia University, Morgantown WV, U.S.A, 2015.
  • Halabe, U. B., Jonas Kavi, and Hota V. GangaRao, “Sensors for Monitoring Corrosion of Steel Embedded in Concrete,” Proceedings of the 2015 Department of Defense - Allied Nations Technical Corrosion Conference. Pittsburgh, PA, November 15-19, 2015.
  • Bungey, J. H., and S. G. Millard, Testing of Concrete in Structures, 3rd ed., New York, Chapman & Hall, 1996
  • Bastidas-Arteaga, E., and M. G. Stewart, "Probabilistic Cost-Benefit Analysis of Climate Change Adaptation Strategies for New RC Structures exposed to chloride ingress", G. Deodatis, B. R. Ellingwood, & D. M. Frangopol (Eds.), Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures (pp.1503-1510). London: CRC Press/Balkema, 2013.
  • Liang, R., Mark Skidmore, and Hota GangaRao, Rehabilitation of East Lynn Lake Bridge Steel Pile Bents with Composites. TRB Innovative Technologies for a Resilient Marine Transportation System 3rd Biennial Research and Development Conference, Washington, DC, June 24-26, 2014.
Metrics
Usage Shares
Total Views
51 Page Views
Total Shares
0 Tweets
51
0 PDF Downloads
0
0 Facebook Shares
Total Usage
51