Interim Conclusions, Recommendations, and Design Guidelines for Durability of Post-Tensioned Bridge Substructures

Schokker, A. J.; West, J. S.; Breen, J. E.; Kreger, M. E.; University of Texas at Austin. Center for Transportation Research

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Interim Conclusions, Recommendations, and Design Guidelines for Durability of Post-Tensioned Bridge Substructures

1999-10-01
By Schokker, A. J. ; West, J. S. ; Breen, J. E. ; ...

[PDF-1.41 MB]

English

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Creators:

Schokker, A. J. ; West, J. S. ; Breen, J. E. ; Kreger, M. E.

Schokker, A. J. ; West, J. S. ; Breen, J. E. ; Kreger, M. E. Less -
Corporate Creators:

University of Texas at Austin. Center for Transportation Research
Corporate Contributors:

Texas. Dept. of Transportation
Subject/TRT Terms:

[+]

Beams Bridge Design Bridges And Other Structures Bridge Substructures Columns Construction Joints Construction Management Corrosion Protection Design Dry Joints Epoxy Joints Grout Highways I24: Design Of Bridges And Retaining Walls Post-tensioned Ducts Post-tensioned Tendon Concrete Segmental Construction Tendons (Materials)
Publication/ Report Number:

Research Report #1405-5
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States

Texas ; United States Less -
Corporate Publisher:

University of Texas at Austin. Center for Transportation Research
Abstract:

The use of post-tensioning in bridges can provide durability and structural benefits to the system while expediting the construction process. When post-tensioning is combined with precast elements, traffic interference can be greatly reduced through rapid construction. Corrosion protection of the post-tensioning system is vital to the integrity of the structure because loss of post-tensioning can result in catastrophic failure. The research program involves exposure testing of twenty-seven large-scale beam specimens and ten large-scale column specimens to investigate numerous combinations of variables for durable post-tensioned substructure design. Beam variables include prestress level, loading, grout type, duct splices, concrete type, strand type, duct type, and end anchorage protection. Column variables include foundation connection, post-tensioning protection, concrete type, and loading. In addition, a testing program with small-scale macrocell corrosion specimens was used to investigate corrosion protection for internal tendons in precast segmental construction. A comprehensive study concerning grouts for bonded post-tensioning included fluidity testing, accelerated corrosion testing, and field testing in a large-scale clear parabolic duct. Preliminary durability design guidelines were developed for durability design of post-tensioned bridge substructures. Many of the experimental programs are ongoing, and final design guidelines will be developed at the completion of the project.
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PDF
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US Transportation Collection
Main Document Checksum:

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urn:sha256:dd9a2aca8b9b7e3dde0486f8585552c539a3fce78490e1dab6969c2ca9493a3b
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https://rosap.ntl.bts.gov/view/dot/14833/dot_14833_DS1.pdf
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Interim Conclusions, Recommendations, and Design Guidelines for Durability of Post-Tensioned Bridge Substructures

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