PCI eLearning Course T220: Production and Construction Details of Full-Depth Precast Concrete Deck Panels-Concrete Panels Speed Bridge Deck Replacement

Concrete Panels Speed Bridge Deck Replacement

Pdf Summary

The use of full-depth precast concrete panels for bridge deck construction and replacement is becoming more common. These panels significantly reduce construction time and lessen the impact on traffic flow. The panels are produced in a plant under controlled conditions, allowing for tight tolerances and improved quality. Precast panels are also crack-free and have higher durability compared to traditional cast-in-place concrete. The panels are typically pretensioned transversely in the plant, and longitudinal post-tensioning is sometimes used to tie the panels together. Bridge deck replacement projects using full-depth precast panels have been successful in reducing construction time by up to 75 percent. The use of precast panels allows for quicker placement during non-peak traffic hours and in winter months. Additionally, lightweight concrete can be employed to reduce dead loads. While the initial cost of using precast panels is higher than cast-in-place decks, the total cost is often lower when considering road user and maintenance costs. The cost differential is expected to diminish as the use of precast panels becomes more widespread. The use of precast concrete panels provides a practical and efficient alternative to traditional bridge deck construction methods.

Keywords

full-depth precast concrete panels

bridge deck construction

construction time reduction

traffic flow impact

controlled conditions

improved quality

crack-free panels

higher durability

quicker placement

cost differential