A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Role of Polyethylene Duct Cracking in Failure of Port Tensioning Cables in Florida Segmented Bridges
During the past 20-plus years, designs based on the post-tension segmental box concept have evolved to become a predominant form of bridge construction; however, during the past five years, instances of tendon deterioration and failure have been disclosed on several Florida bridges. The underlying mechanism has been diagnosed as strand corrosion at grout voids in which bleed water accumulated. Cracking of high-density polyethylene (HDPE) ducts within which the grouted strands reside has also been disclosed. The purpose of the present research was to (1) assess the causes and mechanisms of this HDPE duct cracking, (2) develop performance based assessment tests, and (3) propose a standard for HDPE ducts employed in Florida bridges.
Role of Polyethylene Duct Cracking in Failure of Port Tensioning Cables in Florida Segmented Bridges
During the past 20-plus years, designs based on the post-tension segmental box concept have evolved to become a predominant form of bridge construction; however, during the past five years, instances of tendon deterioration and failure have been disclosed on several Florida bridges. The underlying mechanism has been diagnosed as strand corrosion at grout voids in which bleed water accumulated. Cracking of high-density polyethylene (HDPE) ducts within which the grouted strands reside has also been disclosed. The purpose of the present research was to (1) assess the causes and mechanisms of this HDPE duct cracking, (2) develop performance based assessment tests, and (3) propose a standard for HDPE ducts employed in Florida bridges.
Role of Polyethylene Duct Cracking in Failure of Port Tensioning Cables in Florida Segmented Bridges
2005
174 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Bridge decks , Post tensioning , Polyethylene , Ducts , Cables , Cracking(Fracturing) , Box beams , Concrete structures , Tendons , Reinforced concrete , Failure , Corrosion prevention , Construction materials , Tensile properties , Grout , Chloride , Bridge design , Florida
Polyethylene Duct Cracking on Posttensioning Tendons in Florida Segmented Bridges
| Online Contents | 2006
Polyethylene Duct Cracking on Posttensioning Tendons in Florida Segmented Bridges
| British Library Online Contents | 2006
| European Patent Office | 2024
Corrosion of Tensioning Cables
| British Library Conference Proceedings | 2001
Optimization of post-tensioning forces in stay-cables of cable-stayed bridges
| DOAJ | 2020