Title:
Pitting Corrosion in Prestressed Piles
Author(s):
Gray Mullins, Rajan Sen, David Ostrofsky, and Kwangsuk Suh
Publication:
Structural Journal
Volume:
122
Issue:
3
Appears on pages(s):
89-103
Keywords:
gravimetric; imaging; marine; model; pitting; prestressed piles; profile; stress concentration (SC); tensile test
DOI:
10.14359/51745641
Date:
5/1/2025
Abstract:
This study characterized pitting corrosion in prestressed piles,
linked it to stress concentration factors through ultimate strength
tests, and incorporated the findings into a simple predictive
damage assessment model. Six one-third-scale Class V concrete
prestressed piles were exposed for 38 months to outdoor tidal
cycles simulating a marine environment. At the end of exposure,
24 strands were extracted from the piles, and corrosion loss along
the strands was quantified using a new Pascal’s law-based strand
profiler. This identified regions of locally higher steel loss caused
by pitting corrosion. The same data set was used to confirm gravimetric loss measurements by summing localized section losses over the specimen length. Profiler data was complemented by microscopic imaging to further define pitting geometry. Ultimate load tests were conducted to examine the effect of pitting on residual
tensile strength and ductility. Similitude principles were used to
develop a model for predicting in-service stress in pile strands
using available inspection report crack width data.
Related References:
1. Vecchi, F.; Franceschini, L.; Tondolo, F.; Belletti, B.; Sánchez Montero, J.; and Minetola, P., “Corrosion Morphology of Prestressing Steel Strands in Naturally Corroded PC Beams,” Construction and Building Materials, V. 296, Aug. 2021, Article No. 123720. doi: 10.1016/j.conbuildmat.2021.123720
2. FDOT, “FDOT Standard Specifications for Road and Bridge Construction,” Florida Department of Transportation, Tallahassee, FL, 1991.
3. Sagüés, A. A.; Kranc, S. C.; Presuel-Moreno, F.; Rey, D.; Torres-Acosta, A.; and Yao, L., “Corrosion Forecasting for 75-Year Durability Design of Reinforced Concrete,” Report No. BA502, University of South Florida, Tampa, FL, 2006, 175 pp.
4. Mehta, P. K., and Monteiro, P. J. M., Concrete: Structure, Properties, and Materials, Prentice-Hall, Englewood Cliffs, NJ, 1993, 548 pp.
5. Bertolini, L.; Elsener, B.; Pedeferri, P.; and Polder, R., Corrosion of Steel in Concrete: Prevention, Diagnosis, Repair, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany, 2004, 392 pp.
6. Woodward, R. J., and Williams, F. W., “Collapse of Ynys-y-Gwas Bridge, West Glamorgan,” Proceedings of the Institution of Civil Engineers, V. 84, No. 4, Aug. 1988, pp. 635-669. doi: 10.1680/iicep.1988.179
7. Darmawan, M. S., and Stewart, M. G., “Effect of Pitting Corrosion on Capacity of Prestressing Wires,” Magazine of Concrete Research, V. 59, No. 2, Mar. 2007, pp. 131-139. doi: 10.1680/macr.2007.59.2.131
8. Li, F.; Yuan, Y.; and Li, C.-Q., “Corrosion Propagation of Prestressing Steel Strands in Concrete Subject to Chloride Attack,” Construction and Building Materials, V. 25, No. 10, Oct. 2011, pp. 3878-3885. doi: 10.1016/j.conbuildmat.2011.04.011
9. Zhang, W.-P.; Li, C.-K.; Gu, X.-L.; and Zeng, Y.-H., “Variability in Cross-Sectional Areas and Tensile Properties of Corroded Prestressing Wires,” Construction and Building Materials, V. 228, Dec. 2019, Article No. 116830.
10. Jeon, C.-H.; Lee, J.-B.; Lon, S.; and Shim, C.-S., “Equivalent Material Model of Corroded Prestressing Steel Strand,” Journal of Materials Research and Technology, V. 8, No. 2, Apr. 2019, pp. 2450-2460. doi: 10.1016/j.jmrt.2019.02.010
11. ASTM G46-21, “Standard Guide for Examination and Evaluation of Pitting Corrosion,” ASTM International, West Conshohocken, PA, 2021, 13 pp.
12. Suh, K.; Mullins, G.; Sen, R.; and Winters, D., “Effectiveness of Fiber-Reinforced Polymer in Reducing Corrosion in Marine Environment,” ACI Structural Journal, V. 104, No. 1, Jan.-Feb. 2007, pp. 76-83.
13. Khawaja, M. A.; Suh, K.; Bhethanabotla, V.; and Sen, R., “Corrosion Propagation in Cracked and Uncracked Prestressed Piles,” ACI Materials Journal, V. 119, No. 5, Sept. 2022, pp. 103-118.
14. Suh, K.; Mullins, G.; Sen, R.; and Winters, D., “Effective Repair for Corrosion Control Using FRP Wraps,” Journal of Composites for Construction, ASCE, V. 14, No. 4, Aug. 2010, pp. 388-396. doi: 10.1061/(ASCE)CC.1943-5614.0000094
15. ASTM G1-03, “Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens,” ASTM International, West Conshohocken, PA, 2003, 9 pp.
16. Suh, K., “Underwater FRP Repair of Corrosion Damaged Prestressed Piles,” PhD dissertation, Department of Civil and Environmental Engineering, University of South Florida, Tampa, FL, 2006, 231 pp.
17. Walsh, M. T., and Sagüés, A. A., “Steel Corrosion in Submerged Concrete Structures—Part 1: Field Observations and Corrosion Distribution Modeling,” CORROSION, V. 72, No. 4, Apr. 2016, pp. 518-533. doi: 10.5006/1945
18. Palsson, R., and Mirza, M. S., “Mechanical Response of Corroded Steel Reinforcement of Abandoned Concrete Bridge,” ACI Structural Journal, V. 99, No. 2, Mar.-Apr. 2002, pp. 157-162.
19. Yazdani, S.; Al Azzawi, M.; Quesada Garcia, C.; Mullins, G.; and Sen, R., “Glass Fiber-Reinforced Polymer Effectiveness in Field Repair of Piles,” ACI Structural Journal, V. 120, No. 1, Jan. 2023, pp. 31-47.
20. ASTM A1061/A1061M-20, “Standard Test Methods for Testing Multi-Wire Steel Prestressing Strand,” ASTM International, West Conshohocken, PA, 2020, 5 pp.
21. González, J. A.; Andrade, C.; Alonso, C.; and Feliu, S., “Comparison of Rates of General Corrosion and Maximum Pitting Penetration on Concrete Embedded Steel Reinforcement,” Cement and Concrete Research, V. 25, No. 2, Feb. 1995, pp. 257-264. doi: 10.1016/0008-8846(95)00006-2
22. Pilkey, W. D., and Pilkey, D. F., Peterson’s Stress Concentration Factors, John Wiley & Sons, Inc., New York, NY, 2007, 560 pp.
23. FDOT, email from J. Jacobsen to R. Sen, Florida Department of Transportation, Tallahassee, FL, July 21, 2023.
24. Goulish, A., “Lateral Capacity of Corrosion Damaged Pile Bents,” master’s thesis, Department of Civil and Environmental Engineering, University of South Florida, Tampa, FL, 2002.
25. Torres-Acosta, A. A., “Accelerated vs. Natural Corrosion Experimental Results for Remaining Life Stage Forecasting,” Concrete Under Severe Conditions: Environment and Loading: Proceedings of the 6th International Conference on Concrete Under Severe Conditions (CONSEC’10), V. 1, Mérida, Yucatán, Mexico, P. Castro-Borges, E. I. Moreno, K. Sakai, O. E. Gjorv, and N. Banthia, eds., June 2010, pp. 35-42.
26. Clarke, J., “Strength Restoration of Corrosion Damaged Piles Repaired with Carbon Fiber Reinforced Polymer Systems,” master’s thesis, Department of Civil and Environmental Engineering, University of South Florida, Tampa, FL, 2020, 121 pp.
27. Naaman, A. E., Prestressed Concrete Analysis and Design: Fundamentals, third edition, Techno Press 3000, Ann Arbor, MI, 2012, 1176 pp.