Bonded Portland Cement Concrete Overlays

A bonded portland cement concrete (PCC) overlay is the placement of a comparatively thin PCC pavement over an existing PCC pavement. Bonded PCC overlays are used to increase the structural capacity of an existing PCC pavement or to improve its functional characteristics. Expected advantages of bonded PCC overlays, when compared to conventional hot mix asphalt overlays, are that they last longer and maintain a higher level of serviceability over their design life. Bonded PCC overlays are typically constructed between 50 and 102 mm (2 and 4 in.) thick. The development of an effective bond between the PCC overlay and the existing PCC pavement is critical to the performance of bonded PCC overlays. If the overlay is well bonded, the resulting pavement structure behaves monolithically and critical stresses and deflections are reduced. This technical brief discusses the following aspects of bonded PCC overlays: general design considerations, pavement evaluation, preoverlay repair, surface preparation, structural design, and performance.

• Publication Date: 2002-5

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: 4p
• Serial:
  • Technical Brief
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Adhesive bond strength; Benefits; Design; Pavement performance; Repairing; Service life; Serviceability; Structural design; Surface preparation; Thickness
• Uncontrolled Terms: Bonded concrete overlays
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 01024757
• Record Type: Publication
• Report/Paper Numbers: FHWA-IF-02-009
• Files: TRIS
• Created Date: May 25 2006 6:18PM