A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Long-Term Post-Tensioned Beam and Column Exposure Test Specimens: Experimental Program
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. Post-tensioned concrete substructure elements such as bridge piers, hammerhead bents, and straddle bents have become more prevalent in recent years. Chloride-induced corrosion of steel in concrete is one of the most costly forms of corrosion each year. Coastal substructure elements are exposed to seawater by immersion or spray, and inland bridges may also be at risk due to the application of deicing salts. Corrosion protection of the post-tensioning system is vital to the integrity of the structure of because loss of post-tensioning can result in catastrophic failure. Documentation for durability design of the grout, and anchorage systems is very limited. The objective of this research is to evaluate the effectiveness of corrosion protection measures for post-tensioned concrete substructures by designing and testing specimens representative of typical substructure elements using state-of-the-art practices in aggressive chloride exposure environments. This evaluation was accomplished through long-term exposure testing of twenty-seven large-scale beam specimens and ten large-scale column specimens.
Long-Term Post-Tensioned Beam and Column Exposure Test Specimens: Experimental Program
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. Post-tensioned concrete substructure elements such as bridge piers, hammerhead bents, and straddle bents have become more prevalent in recent years. Chloride-induced corrosion of steel in concrete is one of the most costly forms of corrosion each year. Coastal substructure elements are exposed to seawater by immersion or spray, and inland bridges may also be at risk due to the application of deicing salts. Corrosion protection of the post-tensioning system is vital to the integrity of the structure of because loss of post-tensioning can result in catastrophic failure. Documentation for durability design of the grout, and anchorage systems is very limited. The objective of this research is to evaluate the effectiveness of corrosion protection measures for post-tensioned concrete substructures by designing and testing specimens representative of typical substructure elements using state-of-the-art practices in aggressive chloride exposure environments. This evaluation was accomplished through long-term exposure testing of twenty-seven large-scale beam specimens and ten large-scale column specimens.
Long-Term Post-Tensioned Beam and Column Exposure Test Specimens: Experimental Program
J. S. West (author) / A. J. Schokker (author) / C. J. Larosche (author) / J. E. Breen (author) / M. E. Kreger (author)
1999
286 pages
Report
No indication
English
Long-Term Corrosion Testing and Evaluation of Partially Submerged Post-Tensioned Column Specimens
| British Library Conference Proceedings | 2005
An experimental study on post-tensioned, precast column-beam connections
| British Library Conference Proceedings | 2005