This webinar is co-sponsored by ASCE's Transportation and Development Institute and ASCE Continuing Education

Purpose and Background

Pavement rehabilitation and reconstruction, major activities for all U.S. highway agencies, have a significant impact on agency resources and traffic disruptions because of extensive and extended lane closures. The traffic volumes on the primary highway system, especially in urban areas, have seen tremendous increases over the last 20 years, leading in many instances to an earlier-than-expected need to rehabilitate and reconstruct highway pavements. Pavement rehabilitation in urban areas is resulting in serious challenges for highway agencies because of construction related traffic congestion and safety issues. Many agencies also continue to wrestle with the age-old problem: longer delays now and longer service life versus shorter delays now and shorter service life. In recent years, many agencies have started investigating alternative strategies for pavement rehabilitation and reconstruction that allow for faster and durable rehabilitation and reconstruction of pavements. A promising alternate strategy is the effective use of precast concrete pavement technologies that provide for accelerated repair and rehabilitation of pavements and also result in durable, longer-lasting pavements. Accelerated construction techniques can significantly minimize the impact on the driving public as lane closures and traffic congestion are kept to a minimum. Road user and worker safety is also improved by reducing users’ and workers’ exposure to construction traffic.

The webinar will broadly address:

• Different precast concrete pavement technologies currently available
• Fabrication and construction practices
• Recent project examples
• Domestic and international initiatives
• Technology gaps
• Future directions

Learning Outcomes

At the completion of the webinar you will have an understanding of:

• Precast concrete pavement concepts – repair versus continuous applications
• Available precast concrete pavement technologies and their applications
• Basis for design, fabrication and installation/construction methodologies and sequencing of events for a successful application

Webinar Benefits

• Learn the benefits and limitations of the technology
• Learn about the project selection criteria
• Example projects constructed using the precast concrete pavement technology
• Be introduced to the various resources available (specification templates, reports, etc) for implementing the technology

Intended Audience

Planners, pavement designers, precasters and contractors who are particularly interested in the rapid and sustainable renewal of concrete pavements will benefit from this webinar.

Webinar Outline

• Problem definition
• Why precast pavement technology and definition
• Precast concrete pavement concepts - intermittent and continuous applications
• Types of precast concrete pavement technologies available
  – Jointed precast concrete pavements
  – Precast Prestressed Concrete Pavements (PPCP)
• Components of precast pavement systems and construction sequencing
• Examples of completed projects (domestic and international)
• Technology and implementation items
  – Load transfer systems
  – Bedding and base
  – Structural design
  – Performance thresholds
  – Traffic management
• Precast concrete pavement system acceptance
• Model specifications
• Future directions