Corrosion of steel tendons used in prestressed concrete pressure vessels
The corrosion behavior of a high-strength steel (Specifications for Uncoated Seven-Wire-Stress-Relieved Strand for Prestressed Concrete (ASTM A 416-74, Grade 270)), typical of those used as tensioning tendons in prestressed concrete pressure vessels was measured in several corrosive environments. The protection obtained by coating the steel with two commercial petroleum-base greases or with Portland cement grout was evaluated. The few reported incidents of prestressing steel failures in concrete pressure vessels used for containment of nuclear reactors were reviewed. The susceptibility of the steel to stress corrosion cracking and hydrogen embrittlement and its general corrosion rate were determined in several salt solutions. Wires coated with the greases and grout were soaked for long periods in the same solutions and changes in their mechanical properties were subsequently determined. All three coatings appeared to give essentially complete protection; however, flaws in the grease coatings could be detrimental, and flaws or cracks less than 1-mm-wide (0.04 in.) in the grout were without effect.
- Research Organization:
- Oak Ridge National Lab., TN
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5366409
- Journal Information:
- Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States), Journal Name: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States) Vol. 713; ISSN ASTTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
220200 -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALKALI METAL COMPOUNDS
ALLOYS
AQUEOUS SOLUTIONS
BUILDING MATERIALS
CABLES
CHEMICAL COATING
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CONCRETES
CONTAINERS
CONTAINMENT
CONTAINMENT SYSTEMS
CORROSION
CORROSION INHIBITORS
CORROSION PROTECTION
DATA
DEPOSITION
DISPERSIONS
EMBRITTLEMENT
ENGINEERED SAFETY SYSTEMS
EXPERIMENTAL DATA
FAILURES
GREASES
GROUTING
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROGEN EMBRITTLEMENT
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LUBRICANTS
MATERIALS
MECHANICAL PROPERTIES
MIXTURES
NITRATES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXYGEN COMPOUNDS
PH VALUE
PRESSURE VESSELS
PRESTRESSED CONCRETE
REINFORCED CONCRETE
REINFORCED MATERIALS
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM NITRATES
SODIUM SULFATES
SOLUTIONS
STEEL-ASTM-A416
STEELS
STRAIN RATE
SULFATES
SULFUR COMPOUNDS
SURFACE COATING
TIME DEPENDENCE
WATER
WIRES