HIGH PERFORMANCE CONCRETE FOR BONDED PAVEMENT OVERLAY APPLICATIONS

Deteriorating asphalt and concrete pavement infrastructure demands innovative and economical rehabilitation solutions. A well designed and constructed bonded overlay can add considerable life to existing pavements, by taking advantage of the remaining structural capacity of the original pavement. For bonded concrete overlays on existing concrete pavement and ultra-thin whitetopping on asphalt pavement, characteristics of the overlay concrete have important implications for early age behavior and long-term performance. Bond strength and resistance to cracking are important for overlay performance. In many cases the overlays are constructed on heavily traveled pavements, making early opening to traffic important. Therefore, early strength development without compromising durability is necessary. Satisfactory performance will only occur if the overlay is of sufficient thickness and is well bonded to the original pavement. The design assumption is that the overlay bonds perfectly with the original pavement, producing a monolithic structure. The tensile stresses developed in the overlay by this contraction may induce cracking in the overlay, as well as loss of bond. Without bond, there is very little structural benefit from an overlay, and the overlay may break apart rapidly under heavy traffic. Significant stresses may be caused by the volumetric contraction of the overlay due to shrinkage and thermal effects. Lab and field research for a bonded overlay on an interstate highway in El Paso, Texas, has provided insight into design of high performance concrete for these applications. This paper reviews experimental results as well as current best practices to develop recommendations for high performance concrete materials selection and mixture proportioning for bonded overlay applications.

• Supplemental Notes:
  • Full conference proceedings available on CD-ROM.
• Corporate Authors:

  National Center for Asphalt Technology

  Auburn University, 277 Technology Parkway
  Auburn, AL  United States  36830
• Authors:
  • Delatte, N
• Conference:
  • Second International Symposium on Maintenance and Rehabilitation of Pavements and Technological Control. Segundo Simposio Sobre Manutencao e Rehabilitacao de Pavimentos e Controle Technologico
  • Location: Auburn, Alabama
  • Date: 2001-7-29 to 2001-8-1
• Publication Date: 2001

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 13p

Subject/Index Terms

• TRT Terms: Adhesive bond strength; Asphalt pavements; Concrete pavements; High performance concrete; Infrastructure; Overlays (Pavements); Pavement distress; Pavement maintenance; Whitetopping
• Geographic Terms: Texas
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00973919
• Record Type: Publication
• Report/Paper Numbers: 01-069
• Files: TRIS
• Created Date: May 12 2004 12:00AM