Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Corrosion of Steel Tendons Used in Prestressed Concrete Pressure Vessels
The purpose of this investigation was to determine the corrosion behavior of a high strength steel (ASTM A416-74 grade 270), typical of those used as tensioning tendons in prestressed concrete pressure vessels, in several corrosive environments and to demonstrate the protection afforded by coating the steel with either of two commercial petroleum-base greases or Portland Cement grout. In addition, the few reported incidents of prestressing steel failures in concrete pressure vessels used for containment of nuclear reactors are 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 but small flaws in the grease coatings were detrimental; flaws or cracks less than 1 mm wide in the grout were without effect. (ERA citation 04:027193)
Corrosion of Steel Tendons Used in Prestressed Concrete Pressure Vessels
The purpose of this investigation was to determine the corrosion behavior of a high strength steel (ASTM A416-74 grade 270), typical of those used as tensioning tendons in prestressed concrete pressure vessels, in several corrosive environments and to demonstrate the protection afforded by coating the steel with either of two commercial petroleum-base greases or Portland Cement grout. In addition, the few reported incidents of prestressing steel failures in concrete pressure vessels used for containment of nuclear reactors are 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 but small flaws in the grease coatings were detrimental; flaws or cracks less than 1 mm wide in the grout were without effect. (ERA citation 04:027193)
Corrosion of Steel Tendons Used in Prestressed Concrete Pressure Vessels
J. C. Griess (Autor:in) / D. J. Naus (Autor:in)
1978
31 pages
Report
Keine Angabe
Englisch
Iron & Iron Alloys , Corrosion & Corrosion Inhibition , Construction Equipment, Materials, & Supplies , Materials Degradation & Fouling , Reactor materials , Steel-astm-a416 , Comparative evaluations , Corrosion , Corrosion protection , Surface coating , ERDA/360105 , ERDA/220200 , Steel A416 , High strength steels , Pressure vessels , Prestressing steels
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