Repair Options for Corrosion-damaged Prestressed Concrete Bridges

Sharma, Suraksha; Osmolska, Magdalena Jadwiga; Hornbostel, Karla; Bathen, Lise; Novakova, Iveta; Geiker, Mette

doi:10.2478/ncr-2024-0004

Abstract

Prestressing of bridges allows construction of long spanned bridges made from thin structural members with high flexural and shear capacity. Studies have shown that some of the existing prestressed bridges are not meeting their designed service life due to corrosion of the tendons. The main reasons are poor construction practices in combination with inadequate inspection and maintenance plans. This paper provides a summary of repair options for corrosion-damaged prestressed concrete structures with focus on the individual components of the prestressed system. The applicability of identified repair options to Norwegian conditions is discussed.

References

Norwegian Public Roads Administration: “Bridge Management System (Brutus)”. Available from: https://www.vegvesen.no/fag/teknologi/Bruer/Bruforvaltning
Search in Google Scholar Back to article
Geiker, M.R., A. Michel, H. Stang, H. Vikan, and M.D. Lepech: “Design and Maintenance of Concrete Structures Requires Both Engineering and Sustainability Limit States”. Proceedings, Life-Cycle Analysis and Assessment in Civil Engineering: Towards an Integrated Vision, Ghent, Belgium, 2018, pp. 3110.
Search in Google Scholar Back to article
Hornbostel, K.: “Air Conditioning Gas Emissions for the Rehabilitation of Concrete Bridges, Case Study: Cathodic Protection”. Internal Note, Norwegian Public Road Administration, Oslo, Norway, 2022.
Search in Google Scholar Back to article
Geiker, M.: “Sustainability Verification of Deteriorating Concrete Infrastructure”. Keynote Lecture, 6th International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2022). 2022: Cape Town, South Africa.
Search in Google Scholar Back to article
Menga, A., T. Kanstad, D. Cantero, L. Bathen, K. Hornbostel, and A. Klausen: “Corrosion-Induced Damages and Failures of Post-Tensioned Bridges: A Literature Review”. Structural Concrete. Vol. 24, No.1, 2023, pp. 84-99.
Search in Google Scholar Back to article
Johnsen, R.: “Herøysund Bru, Korrosjon Av Etterspent Armering”. Statens vegvesens rapport nr. 843, Norway, 2022, 64 pp. (In Norwegian).
Search in Google Scholar Back to article
fib Bulletin 26: “Influence of Material and Processing on Stress Corrosion Cracking of Prestressing Steel”. TR, 2003, 44 pp.
Search in Google Scholar Back to article
Norwegian Association of Civil Engineers: “Dimensjonering Av Spennbetong”. Sandefjord, Norway, 1980. (In Norwegian).
Search in Google Scholar Back to article
Bundesministerium für Verkehr Bau und Stadtentwicklung: “Handlungsanweisung Zur Überprüfung Und Beurteilung Von Älteren Brückenbauwerken, Die Mit Vergütetem, Spannungsrisskorrosionsgefährdetem Spannstahl Erstellt Wurden (Handlungsanweisung Spannungsrisskorrosion)”. Germany, 2011. (In German).
Search in Google Scholar Back to article
Wilhelm, T.: “Wasserstoffinduzierte Spannungsrisskorrosion Ein Beitrag Zur Beurteilung Der Zuverlässigkeit Von Spannbetonbrücken Mit Hennigsdorfer Spannstahl”. (PhD Thesis), Technische Universität Dresden, Dresden, Germany, 2014. (In German).
Search in Google Scholar Back to article
Norwegian Public Roads Administration: “Bridge Design-08: Nib-Bridges: Norm”. Handbook 100, Oslo, Norway, 1989. (In Norwegian).
Search in Google Scholar Back to article
Norwegian Public Roads Administration: “Bridge Design-08: Nib-Bridges: Norm”. Handbook 100, Oslo, Norway, 1983. (In Norwegian).
Search in Google Scholar Back to article
fib Bulletin 20: “Grouting of Tendons in Prestressed Concrete”. 2002, 48 pp.
Search in Google Scholar Back to article
NS-EN 523:1997: “Steel Strip Sheaths for Prestressing Tendons-Terminology, Requirements, Quality Control”. Oslo, Norway, 1997.
Search in Google Scholar Back to article
NS-EN 524-1:1997: “Steel Strip Sheaths for Prestressing Tendons-Test Methods-Part 1: Determination of Shape and Dimensions”. Oslo, Norway, 1997.
Search in Google Scholar Back to article
Post-Tensioning Institute: “Acceptance Standards for Post-Tensioning Systems”. 1st Ed, Arizona, USA, 1998, 64 pp.
Search in Google Scholar Back to article
Norsk Betongforening: “Grouting”. Publ. No. 13, Oslo, Norway. (In Norwegian).
Search in Google Scholar Back to article
Nordgård, L., “Betongkonstruksjoner:Dimensjonering. 2.Spennbetong”. Universitetfolaget, Oslo, Norway 1972. (In Norwegian).
Search in Google Scholar Back to article
Norwegian Concrete Association Bridge Committee: “Normalized I-Cross Section «NIB» “. Publ. No. 4, Oslo, Norway, 1974. (In Norwegian).
Search in Google Scholar Back to article
Norwegian Concrete Association Bridge Committee: “Normalized Inverted T-Cross Section «NOB»”. Publ. No. 3, Oslo, Norway, 1974. (In Norwegian).
Search in Google Scholar Back to article
Norwegian Public Road Administration, “Bruhåndbok Prosjektering (001)”. 1st ed. Part 1-4. Oslo, Norway, 1973. (In Norwegian).
Search in Google Scholar Back to article
Osmolska, M.J., T. Kanstad, M.A.N. Hendriks, K. Hornbostel, and G. Markeset: “Durability of Pretensioned Concrete Girders in Coastal Climate Bridges: Basis for Better Maintenance and Future Design”. Structural Concrete. Vol. 20, No.6, 2019, pp. 2256-2271.
Search in Google Scholar Back to article
“Norsk Vegtidsskrift”. Vol. 4S nr 9, 7, Teknisk Ukeblad, Oslo, 1967. (In Norwegian).
Search in Google Scholar Back to article
Norwegian Public Road and Administration: “Prosesskode 2: Standard Beskrivelsestekster for Bruer Og Kaier, Hovedprosess 8: Retningslinjer”. Håndbok 026, Oslo, Norway. (In Norwegian).
Search in Google Scholar Back to article
Norwegian Public Road Administration: “Prosjekteringsregler for Bruer: Normaler “. Håndbok 185, Oslo, Norway, 1996. (In Norwegian).
Search in Google Scholar Back to article
National Academies of Sciences Engineering and Medicine: “Repair and Maintenance of Post-Tensioned Concrete Bridges”. NCHRP Synthesis 562, Washington, D.C., USA, 2021, 68 pp.
Search in Google Scholar Back to article
Cavell, D.G. and P. Waldron: “A Residual Strength Model for Deteriorating Post-Tensioned Concrete Bridges”. Computers & Structures. Vol. 79, No.4, 2001, pp. 361-373.
Search in Google Scholar Back to article
Manning, D.G.: “Durability of Prestressed Concrete Highway Structures”. NCHRP Synthesis of Highway Practice 140, Washington, D.C., USA, 1988, 75 pp.
Search in Google Scholar Back to article
Salas, R.M., Schokker-AJ, J. West, J.E. Breen, and M. Kreger: “Conclusions, Recommendations and Design Guidelines for Corrosion Protection of Post-Tensioned Bridges”. Texas DOT, Texas, USA, 2004.
Search in Google Scholar Back to article
Yoon, I.-S., T.H.-K. Kang, and H. Shin: “Corrosion Protection Method and Performance for Prestressing Strands”. HERON. Vol. 64, 2019.
Search in Google Scholar Back to article
Schupack, M. and M.G. Suarez: “Some Recent Corrosion Embrittlement Failures of Prestressing Systems in the United States”. PCI Journal. Vol. 27, No.2, 1982, pp. 38-55.
Search in Google Scholar Back to article
ACI Committee 222: “Corrosion of Prestressing Steels”. ACI 222.2R-01, Farmington Hills, MI, USA, 2001, 43 pp.
Search in Google Scholar Back to article
Trejo, D., S.B. Im, R.G. Pillai, M.B.D. Hueste, P. Gardoni, S. Hurlebaus, and M. Gamble: “Effect of Voids in Grouted Post-Tensioned Concrete Bridge Construction: Inspection and Repair Manual for External Tendons in Segmental, Post-Tensioned Bridges”. Texas Transportation Institute, Texas, USA, 2009, 62 pp.
Search in Google Scholar Back to article
Sagues, A.A., F.C. Karins, and K. Lau: “Corrosion Characteristics of Post-Tensioning Strands in Ungrouted Ducts”. University of South Florida, Florida, USA, 2011.
Search in Google Scholar Back to article
fib Bulletin 97: “External Tendons of Bridges”. State of the art report, 2020, 108 pp.
Search in Google Scholar Back to article
Norsk betongforening: “Spennarmeringsarbeider”. No.14, Oslo, Norway, 2016. (In Norwegian).
Search in Google Scholar Back to article
fib Bulletin 15: “Durability of Post-Tensioning Tendons”. 2001, 277 pp.
Search in Google Scholar Back to article
Corven Engineering: “New Directions for Florida Post-Tensioned Bridges”. Florida Department of Transportation (FDOT), Tallahassee, USA, 2002.
Search in Google Scholar Back to article
Theryo, T., P. Garcia, and R. Powers: “Investigation Findings of Sunshine Skyway Bridge Post-Tensioned Columns Tendon Corrosion and Repair Methods “. Proceedings, The 3rd International Conference on Current and Future Trends in Bridge Design, Construction and Maintenance, 2015, pp. 534-546.
Search in Google Scholar Back to article
West, J.S.: “Durability Design of Post-Tensioned Bridge Substructures”. (PhD Thesis), The University of Texas at Austin, Texas, USA, 1999.
Search in Google Scholar Back to article
Lau, K., I. Lasa, and M. Paredes: “Update on Corrosion of Post-Tensioned Tendons with Deficient Grout in Florida”. Proceedings, Corrosion 2014 (NACE), Texas, USA, 2014.
Search in Google Scholar Back to article
The Concrete Society: “Durable Bonded Post-tensioned Concrete Bridges”. TR No. 47, Slough, UK, 1996.
Search in Google Scholar Back to article
VSL International: “Grouting of Post-Tensioning Tendons “. Switzerland, 2002, 46 pp.
Search in Google Scholar Back to article
Berg, K.M. and A.J. Schokker: “Development of Best Practices for Inspection of PT Bridges in Minnesota”. University of Minnesota Duluth and MDOT, Minnesota, USA, 2012, 213 pp.
Search in Google Scholar Back to article
Lau, K. and I. Lasa: “Corrosion of Prestress and Post-Tension Reinforced-Concrete Bridges”. Chapter No. 3, “Corrosion of Steel in Concrete Structures”, A. Poursaee, Editor, Woodhead Publishing, Oxford, UK, 2016, pp. 37-57.
Search in Google Scholar Back to article
Woodward, R. and F. Williams: “Collapse of Yns-Y-Gwas Bridge, Glamorgan”. Proceeding of the Institution of Civil Engineers. Vol. 84, No.4, 1988, pp. 635-669.
Search in Google Scholar Back to article
Kamat, N.: “Thirty Years after Mandovi Bridge Collapse”, in The Navhind Times. 2016.
Search in Google Scholar Back to article
fib Bulletin 110: “Management of Post-Tensioned Bridges”. 2023, 143 pp.
Search in Google Scholar Back to article
Hamilton, H.R., A. Piper, A. Randell, and B. Brunner: “Simulation of Prepackaged Grout Bleed under Field Conditions”. University of Florida, Florida, USA, 2014.
Search in Google Scholar Back to article
Lau, K., I. Lasa, and M. Paredes: “Corrosion Failure of Post-Tensioned Tendons in Presence of Deficient Grout”. Proceedings, Corrosion 2013 (NACE), Florida, USA, 2013.
Search in Google Scholar Back to article
Bertolini, L. and M. Carsana: “High pH Corrosion of Prestressing Steel in Segregated Grout”. Proceedings, Modelling of Corroding Concrete Structures, Madrid, Spain, 2011, pp. 147-158.
Search in Google Scholar Back to article
Teddy S. Theryo, W.H.H., and Piotr Paczkowski: “Guidelines for Sampling, Assessing, and Restoring Defective Grout in Prestressed Concrete Bridge Post-Tensioning Ducts”. FHWA-HRT-13-028, Federal Highway Administration, Virginia, USA, 2013.
Search in Google Scholar Back to article
Abdullah, A.B.M., J.A. Rice, R. Bhatia, N.R. Brenkus, and H.R. Hamilton: “A Thermal Analysis of Flexible Filler Injection for Unbonded Post-Tensioning Tendons”. Construction and Building Materials. Vol. 126, 2016, pp. 599-608.
Search in Google Scholar Back to article
PTI Technical Notes: “Selection of Filler Material for Multistrand PT Tendons”. Post-tensioning Institute. No.19, 2015.
Search in Google Scholar Back to article
Bruce, S., P. McCarten, S. Freitag, and L.M. Hasson: “Deterioration of Prestressed Concrete Bridge Beams”. Proceedings, Land Transport New Zealand, Wellington, New Zealand, 2008.
Search in Google Scholar Back to article
Pough, K., D. Mayhorn, G.S. Prinz, and R. Floyd: “Evaluation and Repair of Existing Bridges in Extreme Environments”. SPTC14.1-58-F, School of Civil Engineering and Environmental Science, University of Oklahoma, Oklahoma, USA, 2016, 199 pp.
Search in Google Scholar Back to article
Tanaka, Y., H. Kawano, H. Watanabe, and T. Nakajo: “Study on Cover Depth for Prestressed Concrete Bridges in Airborne-Chloride Environments”. PCI Journal. Vol. 51, No.2, 2006.
Search in Google Scholar Back to article
Song, G. and S. Ahmad: “Corrosion of Steel in Concrete: Causes, Detection and Prediction”. A State-of-the-Art (Review Report 4), ARRB Transport Research Ltd, Melbourne, Australia, 1998.
Search in Google Scholar Back to article
American Concrete Institute Committee 222: “Report on Corrosion of Prestressing Steels”. ACI, Farmington Hills, MI, USA, 2014.
Search in Google Scholar Back to article
Murray, C., B. Cranor, R. Floyd, and J.-S. Pei: “Experimental Testing of Older AASTHO Type II Bridge Girders with Corrosion Damage at the Ends”. PCI Journal. Vol. 64, No.1, 2019, pp. 49-64.
Search in Google Scholar Back to article
Ramseyer, C. and T.H.K. Kang: “Post-Damage Repair of Prestressed Concrete Girders”. International Journal of Concrete Structures and Materials. Vol. 6, No.3, 2012, pp. 199-207.
Search in Google Scholar Back to article
Osmolska, M.J., T. Kanstad, M.A.N. Hendriks, and G. Markeset: “Numerical Investigation into the Effects of Corrosion on the Shear Performance of Pretensioned Bridge Girders with Cast-in-Place Slabs”. Structures. Vol. 46, 2022, pp. 1447-1468.
Search in Google Scholar Back to article
Austnes, P. and R. Kompen: “Resistant Concrete Structures, Subproject 3: Maintenance Methods, Report 3.3: Cathodic Protection of Prestressing Steel in Chloride Contaminated Concrete”. The Research Council of Norway, Oslo, Norway, 1999. (In Norwegian).
Search in Google Scholar Back to article
Rogers, R., L. Wotherspoon, A. Scott, and J. Ingham: “Residual Strength Assessment and Destructive Testing of Decommissioned Concrete Bridge Beams with Corroded Pretensioned Reinforcement”. PCI Journal. Vol. 57, 2012, pp. 100-118.
Search in Google Scholar Back to article
Tanaka, Y., T. Shimomura, and T. Yamaguchi: “Experimental and Numerical Study on the Residual Strength of Deteriorated Prestressed Concrete Bridge Beams Affected by Chloride Attack”. “Concrete Repair, Rehabilitation and Retrofitting III”, CRC Press, UK, 2012.
Search in Google Scholar Back to article
Corven, J. and A.J. Moreton: “Post-Tensioning Tendon Installation and Grouting Manual”. FHWA-NHI-13-026, Federal Highway Administration, Washington D.C., USA, 2013, 184 pp.
Search in Google Scholar Back to article
fib Bulletin 102: “Guide for Protection and Repair of Concrete Structures”. 2021, 291 pp.
Search in Google Scholar Back to article
fib Bulletin 33: “Durability of Post-Tensioning Tendons”. Recommendation, 2005, 71 pp.
Search in Google Scholar Back to article
Transport Infrastructure Ireland: “Strengthening, Repair and Monitoring of Post-Tensioned Concrete Bridge Decks”. Dublin, Ireland, 2014, 28 pp.
Search in Google Scholar Back to article
fib Bulletin 103: “Guide for Strengthening of Concrete Structures”. 2022, 316 pp.
Search in Google Scholar Back to article
Toshihiko, N. and T. Takeharu: “Replacing the Deck Slab on a Post-Tensioned, Prestressed-Concrete Composite Girder Bridge in Japan”. Proceedings of the Institution of Civil Engineers - Forensic Engineering. Vol. 172, No.1, 2019, pp. 3-10.
Search in Google Scholar Back to article
Corven Engineering: “Mid-Bay Bridge Post-Tensioning Evaluation”. FDOT, Florida, USA, 2001.
Search in Google Scholar Back to article
Dickes, G.: “Vacuum Grouting Repairs for Existing Post-Tensioned Structures and New Construction”. Proceedings, PCI Convention, 2008, pp. 15.
Search in Google Scholar Back to article
Dai, L., L. Wang, M. Deng, B. Wu, R.W. Floyd, and J. Zhang: “Strengthening a 20-Year-Old Post-Tensioned Concrete Box Beam with Double-Layer Prestressed Steel Wire Ropes”. Journal of Bridge Engineering. Vol. 23, No.11, 2018.
Search in Google Scholar Back to article
MacDougall, C., M. Green, and L. Amato: “CFRP Tendons for the Repair of Post-Tensioned, Unbonded Concrete Buildings”. Journal of Performance of Constructed Facilities. Vol. 25, No.3, 2011, pp. 149-157.
Search in Google Scholar Back to article
Ledesma, T.: “Replaceable Grouted External Post-Tensioned Tendons”. FHWA-HIF-19-067, Federal Highway Administration, Washington D.C., USA, 2019, 47 pp.
Search in Google Scholar Back to article
L. C. Powell, J. E. Breen, and M. E. Kreger: “State of the Art Externally Post-Tensioned Bridges with Deviators”. FHWA/TX-89+365-1, Center for Transportation Research, University of Texas at Austin, Texas, USA, 1988, 63 pp.
Search in Google Scholar Back to article
VDOT Structure and Bridge Division: “General Requirements for the Usage, Design and Specification of Post-Tensioned Bridge Superstructures”. IM-S&B-91, Virginia,US, 2016, 204 pp.
Search in Google Scholar Back to article
Im, S.B.: “Inspection, Assessment, and Repair of Grouted Ducts in Post-Tensioned Bridge”. (PhD Thesis), Texas A&M University, Texas, USA, 2009, 326 pp.
Search in Google Scholar Back to article
Chauvin, M.R.: “Considerations for Development of Inspection and Remedial Grouting Contracts for Post-Tensioned Bridges”. Wiss, Janney, Elstner Associates, Inc. and MDOT, Minnesota, USA, 2017.
Search in Google Scholar Back to article
Sprinkel, M.M.: “VDOT Experience with Grouts and Grouted Post-Tensioned Tendons”. PTI Journal. 2015, pp. 51-61.
Search in Google Scholar Back to article
COST 534: “New Materials System, Methods and Concepts for Prestressed Concrete Structures”. Electrochemical Maintenance and Repair Methods-Part 4, COST, Brussels, Belgium, 2009, 32 pp.
Search in Google Scholar Back to article
Liao, H., J. Vukotic, and D. Whitmore: “Post-Tensioning Investigation and Corrosion Mitigation in Voided Slab Bridges”. Proceedings, 11th International Conference on Short and Medium Span Bridges, Toronto, Canada, 2022.
Search in Google Scholar Back to article
Whitmore, D., G. Fallis, H. Liao, S. Strombeck, and I. Lasa: “Tendon Impregnation Technology Mitigates Corrosion and Protects Post-Tensioned Tendons”. PTI Journal. Vol. 2014, pp. 17-21.
Search in Google Scholar Back to article
Whitmore, D., T. Arnesen, and B. Pailes: “Investigating and Resolving Bridge Grouted Pt-Strand Corrosion Problems “. Proceedings, Structures Congress, ASCE, 2017 pp. 68-75.
Search in Google Scholar Back to article
Gilles, I.P.: “Internal Post-Tensioning Tendons: Many Problems and Sometimes Solutions”. Public Service of Wallonia, Belgium.
Search in Google Scholar Back to article
Hamilton, H.R., S.R. Patil, and E. Torres: “Evaluation of Techniques to Remove Defective Grout from Post-Tensioning Tendons”. University of Florida and FDOT, Florida, USA, 2020, 222 pp.
Search in Google Scholar Back to article
Kodsy, A., G. Morcous, and R.L. Wood: “Synthesis of Repair Practices of Damaged Precast/Prestressed Concrete Girders”. University of Nebraska, Lincoln, USA, 2020, 151 pp.
Search in Google Scholar Back to article
Nagi, M., D. Whiting, and H. Tabatabai: “Laboratory Evaluation of Repairs to Pretensioned Concrete Bridge Members”. Proceedings, 10th International Conference and Exhibition-Structural Faults and Repair Conference 2003, London, UK, 2003.
Search in Google Scholar Back to article
Shafei, B., B. Phares, and W. Shi: “Beam End Repair for Prestressed Concrete Beams”. No.IHRB Project TR-715, Institute for Transportation, Iowa State University, Iowa, USA, 2020, 76 pp.
Search in Google Scholar Back to article
Andrawes, B., I.D. Shaw, and H. Zhao: “Repair & Strengthening of Distressed/Damaged Ends of Prestressed Beams with FRP Composites”. Center for Transportation, Illinois, USA, 2018, 94 pp.
Search in Google Scholar Back to article
Shield, C. and P. Bergson: “BR27568-Experimental Shear Capacity Comparison between Repaired and Unrepaired Girder Ends “. MDOT, Minnesota, USA, 2018, 144 pp.
Search in Google Scholar Back to article
Choo, C.C., A. Peiris, and I. Harik: “Repair of I-65 Expressway Bridges Using Carbon Fiber Reinforced Polymer (CFRP) Composites”. KY Transportation Center, Kentucky, USA, 2013.
Search in Google Scholar Back to article
Harries, K.A., J. Kasan, and J. Aktas: “Repair Methods for Prestressed Concrete Girders “. FHWAPA-2009-008-PIT 006, Pennsylvania DOT, Pennsylvania, USA, 2009.
Search in Google Scholar Back to article
Harries, K.A., J. Kasan, R. Miller, and R. Brinkman: “Updated Research for Collision Damage and Repair of Prestressed Concrete Beams.”. NCHRP Project 20-07(307), NCHRP, Transportation Research Board, Washington, D.C., USA, 2012, 228 pp.
Search in Google Scholar Back to article
Ghaffary, A. and M.A. Moustafa: “Synthesis of Repair Materials and Methods for Reinforced Concrete and Prestressed Bridge Girders”. Materials. Vol. 13, No.18, 2020, pp. 4079.
Search in Google Scholar Back to article
Menoufy, A. and K. Soudki: “Flexural Behavior of Corroded Pretensioned Girders Repaired with CFRP Sheets”. PCI Journal. Vol. 59, 2014, pp. 129-143.
Search in Google Scholar Back to article
Menoufy, A.E.: “Flexural Fatigue Behaviour of Corroded Pretensioned Beams and Their Repair Using Carbon Fibre Reinforced Polymer Sheets “. (PhD Thesis), University of Waterloo Ontario, Canada, 2015, 251 pp.
Search in Google Scholar Back to article
Lin, S.-H., B.C. McCoy, G.W. Lucier, R. Seracino, and N.A. Pierce: “Rapid Prestressed Concrete Retrofit with Prestressed Mechanically-Fastened Fiber-Reinforced Polymer: Field Performance and Observation for a Deteriorated Prestressed Concrete Bridge”. Transportation Research Record. Vol. 2678, No.4, 2023, pp. 804-818.
Search in Google Scholar Back to article
Funahashi, M. and W.T. Young: “Cathodic Protection of Prestressed Bridge Members-Full-Scale Testing”. Transportation Research Record. Vol. 1561, No.1, 1996, pp. 13-25.
Search in Google Scholar Back to article
Whitmore, D. and C. Ball: “Galvanic Corrosion Protection of Prestressed/Post-Tensioned Structures”. Proceedings, Structure Congress: New Horizons and Better Practices, 2007, pp. 1-13.
Search in Google Scholar Back to article
NS-EN ISO 12696:2022: “Cathodic Protection of Steel in Concrete “. Oslo, Norway, 2022.
Search in Google Scholar Back to article
Norwegian Public Road Administration: “FoU-Programmet Bedre Bruvedlikehold 2017-2021”. Sluttrapport, No.865, Oslo, Norway, 2022. (In Norwegian).
Search in Google Scholar Back to article
Norwegian Public Roads Administration: “N-V441 Bruinspeksjon”. Oslo, Norway, 2023. (In Norwegian).
Search in Google Scholar Back to article
fib: “fib Model Code for Concrete Structures 2010”. 2013.
Search in Google Scholar Back to article
Eurocode 2: “Design of Concrete Structures-Part 1-1: General Rules and Rules for Buildings, Bridges and Civil Engineering Structures”. FprEN 1992-1-1:2022 (E), 2022, 410 pp.
Search in Google Scholar Back to article

Repair Options for Corrosion-damaged Prestressed Concrete Bridges

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