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

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

Administration (SCSE)

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English (US)
Title of host publication	Structural Concrete and Time - Proceedings of the fib Symposium
Editors	Angel A. Di Maio, Claudio J. Zega
Publisher	Symposium Secretariat, fib Symposium Argentina 2005
Pages	3-10
Number of pages	8
ISBN (Electronic)	9872166013, 9789872166014
State	Published - 2005
Event	2005 fib Symposium on Structural Concrete and Time - La Plata, Argentina Duration: Sep 28 2005 → Sep 30 2005

Publication series

Name	Structural Concrete and Time - Proceedings of the fib Symposium
Volume	1

Other

Other	2005 fib Symposium on Structural Concrete and Time
Country/Territory	Argentina
City	La Plata
Period	9/28/05 → 9/30/05

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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Salas, R. M., West, J. S., Kotys, A. L., Schokker, A. J., Breen, J. E., & Kreger, M. E. (2005). Accelerated corrosion testing and evaluation of internal tendons in Posttensioned concrete beam elements. In A. A. Di Maio, & C. J. Zega (Eds.), Structural Concrete and Time - Proceedings of the fib Symposium (pp. 3-10). (Structural Concrete and Time - Proceedings of the fib Symposium; Vol. 1). Symposium Secretariat, fib Symposium Argentina 2005.

Accelerated corrosion testing and evaluation of internal tendons in Posttensioned concrete beam elements. / Salas, R. M.; West, J. S.; Kotys, A. L. et al.
Structural Concrete and Time - Proceedings of the fib Symposium. ed. / Angel A. Di Maio; Claudio J. Zega. Symposium Secretariat, fib Symposium Argentina 2005, 2005. p. 3-10 (Structural Concrete and Time - Proceedings of the fib Symposium; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Salas, RM, West, JS, Kotys, AL, Schokker, AJ, Breen, JE & Kreger, ME 2005, Accelerated corrosion testing and evaluation of internal tendons in Posttensioned concrete beam elements. in AA Di Maio & CJ Zega (eds), Structural Concrete and Time - Proceedings of the fib Symposium. Structural Concrete and Time - Proceedings of the fib Symposium, vol. 1, Symposium Secretariat, fib Symposium Argentina 2005, pp. 3-10, 2005 fib Symposium on Structural Concrete and Time, La Plata, Argentina, 9/28/05.

Salas RM, West JS, Kotys AL, Schokker AJ, Breen JE, Kreger ME. Accelerated corrosion testing and evaluation of internal tendons in Posttensioned concrete beam elements. In Di Maio AA, Zega CJ, editors, Structural Concrete and Time - Proceedings of the fib Symposium. Symposium Secretariat, fib Symposium Argentina 2005. 2005. p. 3-10. (Structural Concrete and Time - Proceedings of the fib Symposium).

Salas, R. M. ; West, J. S. ; Kotys, A. L. et al. / Accelerated corrosion testing and evaluation of internal tendons in Posttensioned concrete beam elements. Structural Concrete and Time - Proceedings of the fib Symposium. editor / Angel A. Di Maio ; Claudio J. Zega. Symposium Secretariat, fib Symposium Argentina 2005, 2005. pp. 3-10 (Structural Concrete and Time - Proceedings of the fib Symposium).

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title = "Accelerated corrosion testing and evaluation of internal tendons in Posttensioned concrete beam elements",

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.",

author = "Salas, {R. M.} and West, {J. S.} and Kotys, {A. L.} and Schokker, {A. J.} and Breen, {J. E.} and Kreger, {M. E.}",

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.; 2005 fib Symposium on Structural Concrete and Time ; Conference date: 28-09-2005 Through 30-09-2005",

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publisher = "Symposium Secretariat, fib Symposium Argentina 2005",

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AU - Salas, R. M.

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AU - Kotys, A. L.

AU - Schokker, A. J.

AU - Breen, J. E.

AU - Kreger, M. E.

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N2 - 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.

AB - 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.

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

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