Accelerated corrosion testing and evaluation of internal tendons in Posttensioned concrete beam elements

R. M. Salas, J. S. West, A. L. Kotys, A. J. Schokker, J. E. Breen, M. E. Kreger

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The effectiveness of cement grout as corrosion protection system for post-tensioned concrete tendens has been under debate due to significant corrosion damage, several failures of individual tendens and few collapses of non-typical structures. After a comprehensive research program, developed at the Ferguson Structural Engineering Laboratory, the long term beam corrosion test series indicated negative durability effects due to the use of mixed reinforcement, galvanized steel ducts, and typical galvanized d uet splices. Cracks had a direct negative effect on specimen performance and grout voids were found to be detrimental to the durability of both galvanized ducts and strand. On the other hand, positive effects were found with the use of high performance concrete, high post-tensioning levels, and plastic ducts.

Original languageEnglish (US)
Title of host publicationStructural Concrete and Time - Proceedings of the fib Symposium
EditorsAngel A. Di Maio, Claudio J. Zega
PublisherSymposium Secretariat, fib Symposium Argentina 2005
Pages3-10
Number of pages8
ISBN (Electronic)9872166013, 9789872166014
StatePublished - 2005
Event2005 fib Symposium on Structural Concrete and Time - La Plata, Argentina
Duration: Sep 28 2005Sep 30 2005

Publication series

NameStructural Concrete and Time - Proceedings of the fib Symposium
Volume1

Other

Other2005 fib Symposium on Structural Concrete and Time
CountryArgentina
CityLa Plata
Period9/28/059/30/05

Bibliographical note

Funding Information:
The authors gratefully acknowledge the financial support provided by the Texas Department of Transportation. Any opinions expressed in this paper are those of the authors, and not necessarily those of the sponsor.

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