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Retrofitting of Distressed Post-tensioned Concrete Members by External Post-tensioning
https://orcid.org/http://orcid.org/0000-0001-9920-1918
Many of the existing prestressed concrete bridges are in distressed condition in India and abroad. Deterioration occurs due to various reasons. This has considerably reduced the load-carrying capacity of many prestressed concrete (PSC) bridges. Therefore, it is necessary to improve the retrofitting solutions to recover the load-carrying capacity that is lost due to distress. One of the prime techniques that is being used for retrofitting of existing bridges is external post-tensioning. However, behaviour of the retrofitted PSC members is still not understood in depth. It is intended to report the behaviour of retrofitted post-tensioned concrete specimens by external post-tensioning, on which distress was induced by the combined effect of loss of prestress and fatigue deformation before retrofitting. As a result of retrofitting, the ultimate load-carrying capacity has increased by 33% with reference to the fully prestressed control beam specimen. The ductility is observed as 94% of the ductility of the control specimen.
Retrofitting of Distressed Post-tensioned Concrete Members by External Post-tensioning
https://orcid.org/http://orcid.org/0000-0001-9920-1918
Many of the existing prestressed concrete bridges are in distressed condition in India and abroad. Deterioration occurs due to various reasons. This has considerably reduced the load-carrying capacity of many prestressed concrete (PSC) bridges. Therefore, it is necessary to improve the retrofitting solutions to recover the load-carrying capacity that is lost due to distress. One of the prime techniques that is being used for retrofitting of existing bridges is external post-tensioning. However, behaviour of the retrofitted PSC members is still not understood in depth. It is intended to report the behaviour of retrofitted post-tensioned concrete specimens by external post-tensioning, on which distress was induced by the combined effect of loss of prestress and fatigue deformation before retrofitting. As a result of retrofitting, the ultimate load-carrying capacity has increased by 33% with reference to the fully prestressed control beam specimen. The ductility is observed as 94% of the ductility of the control specimen.
Retrofitting of Distressed Post-tensioned Concrete Members by External Post-tensioning
https://orcid.org/http://orcid.org/0000-0001-9920-1918
Many of the existing prestressed concrete bridges are in distressed condition in India and abroad. Deterioration occurs due to various reasons. This has considerably reduced the load-carrying capacity of many prestressed concrete (PSC) bridges. Therefore, it is necessary to improve the retrofitting solutions to recover the load-carrying capacity that is lost due to distress. One of the prime techniques that is being used for retrofitting of existing bridges is external post-tensioning. However, behaviour of the retrofitted PSC members is still not understood in depth. It is intended to report the behaviour of retrofitted post-tensioned concrete specimens by external post-tensioning, on which distress was induced by the combined effect of loss of prestress and fatigue deformation before retrofitting. As a result of retrofitting, the ultimate load-carrying capacity has increased by 33% with reference to the fully prestressed control beam specimen. The ductility is observed as 94% of the ductility of the control specimen.
Retrofitting of Distressed Post-tensioned Concrete Members by External Post-tensioning
J. Inst. Eng. India Ser. A
Manisekar, R. (author) / Saravana Kumar, K. (author)
Journal of The Institution of Engineers (India): Series A ; 104 ; 675-683
2023-09-01
9 pages
Article (Journal)
Electronic Resource
English
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