Post-tensioning (PT) has evolved to become an important technology for affecting integrity of large, increasingly sophisticated reinforced concrete structures. In the case of bridges, however, tendon failures resulting from wire/strand corrosion have been reported as early as two years post construction. In response to this, a recent study introduced, evaluated, and used an analytical modeling approach that projects timing of such failures, given statistics which characterize the distribution of wire corrosion rate. These efforts all considered that corrosion penetration is normally distributed across the entire population of wires comprising all tendons. However, it has been reported that corrosion, resultant wire and strand fractures, and tendon failures can be confined to a specific location on a bridge structure as a result of variations in material properties or construction improprieties (or both). Also, the distribution of corrosion rates can differ within individual tendons because of, first, variations in grout structure and composition and, second, presence of voids and free water. The present research extends these previous efforts and addresses such situations; that is, those where the corrosion rate distribution is spatially variable. The results are discussed within the context of better assuring structural integrity for PT bridges.
Skip Nav Destination
Research Article| January 27 2021
Technical Note: Failure Projection of Corroding Bridge Post-Tensioned Tendons Considering Partitioned Attack
CORROSION (2021) 77 (4): 376–381.
- Views Icon Views
- Share Icon Share
- Search Site
William H. Hartt; Technical Note: Failure Projection of Corroding Bridge Post-Tensioned Tendons Considering Partitioned Attack. CORROSION 1 April 2021; 77 (4): 376–381. doi: https://doi.org/10.5006/3728
Download citation file:
Don't already have an account? Register
Citing articles via
Ultrasonically assisted macrocyclic ring compound coatings for corrosion protection of copper in 3.5% NaCl solution
V. Ulagammal, Vitalis Chukwuike, Saranyan Vijayaraghavan, R C Barik
Fatigue and Static Crack Growth Rate of Alloy 718 Under Cathodic Polarization
Ramgopal Thodla, Anand Venkatesh
Corrosion in Tinplate Cans Used for Food Storage. Part 2: Characterization and Corrosion Phenomena in BPA-NI Coated Cans
Kuo-Hsiang Chang, Belinda Hurley, Melvin Pascall, Gerald Frankel
Influence of robust drain openings and insulation stand-offs on corrosion under insulation behavior of carbon steel
Ahmad Raza Khan Rana, Mingzhang Yang, Jamal Umer, Tom Veret, Graham Brigham
The COVID-19 Pandemic, Part 2: Understanding the Efficacy of Oxidized Copper Compounds in Suppressing Infectious Aerosol-Based Virus Transmission
John R. Scully, Mike Hutchison, R.J. Santucci, Jr.