A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stress corrosion failure of large diameter pressure pipelines of prestressed concrete
The failure of a 1.5 m diameter prestressed concrete line for water supply was examined. The water pressure opened a hole of 0.5 m 2 in the pipe wall by breaking the concrete into fragments and by tensile severing of a number of coils of the wire winding. Flexural and tensile testing of samples of the broken materials showed no damage to the concrete, but showed significant losses of strength and ductility in the prestressing steel wire. The SEM analysis of the external and fracture surfaces of the circumferential wires revealed shallow cracking and corroded areas as expected from a stress corrosion cracking process. The failure analysis presented in this paper shows that such a process was able to exhaust the damage tolerance of the affected tube until the pipeline burst under the work pressures.
Stress corrosion failure of large diameter pressure pipelines of prestressed concrete
The failure of a 1.5 m diameter prestressed concrete line for water supply was examined. The water pressure opened a hole of 0.5 m 2 in the pipe wall by breaking the concrete into fragments and by tensile severing of a number of coils of the wire winding. Flexural and tensile testing of samples of the broken materials showed no damage to the concrete, but showed significant losses of strength and ductility in the prestressing steel wire. The SEM analysis of the external and fracture surfaces of the circumferential wires revealed shallow cracking and corroded areas as expected from a stress corrosion cracking process. The failure analysis presented in this paper shows that such a process was able to exhaust the damage tolerance of the affected tube until the pipeline burst under the work pressures.
Stress corrosion failure of large diameter pressure pipelines of prestressed concrete
Bruch einer großkalibrigen Druckleitung aus Spannbeton durch Spannungsrißkorrosion
Valiente, A. (author)
Engineering Failure Analysis ; 8 ; 245-261
2001
17 Seiten, 13 Bilder, 4 Tabellen, 6 Quellen
Article (Journal)
English
Corrosion and Corrosion Control of Prestressed Concrete Cylinder Pipelines
| British Library Online Contents | 1993
Corrosion and Corrosion Control of Prestressed Concrete Cylinder Pipelines - An Overview
| British Library Conference Proceedings | 1993
Corrosion and corrosion control of prestressed concrete cylinder pipelines - a review
| Tema Archive | 1993
Calculation of large-diameter concrete-encased steel pipelines
| Online Contents | 1993
Calculation of large-diameter concrete-encased steel pipelines
| Springer Verlag | 1993