Asphalt surface treatment practice in southeastern United States.
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Asphalt surface treatment practice in southeastern United States.

Filetype[PDF-3.09 MB]

  • English

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    • Abstract:
      It costs less to maintain roads in good condition than in poor condition. Pavement preservation is a set of

      activities to extend pavement life, improve safety, and meet road user expectations. Surface treatments are

      pavement preservation treatments applied to the whole surface of the road. This synthesis summarizes surface

      treatments’ state of practice in the United States, especially southeastern states. Eleven pavement preservation

      techniques were addressed: fog seal, rejuvenator seal, chip seal, sandwich seal, scrub seal, slurry seal,

      microsurfacing, cape seal, thin overlays, ultrathin bonded wearing course and crack sealing/filling. Recent

      work on surface treatments has been reviewed and summarized. To research surface treatments’ state of

      practice, a survey was designed and distributed to Southeastern Association of State Highway and

      Transportation Officials (SASHTO) agencies. Nineteen participants from Florida, Georgia, Louisiana,

      Virginia, West Virginia, North Carolina, and Arkansas participated in the survey. The electronic survey

      consisted of three questionnaires asking administrative, technical, and research-related questions. Results

      showed that thin overlays, crack repairs, microsurfacing, chip seal, and fog seal are the most common

      preventative maintenance practices. In this report, each chapter is dedicated to one surface treatment

      technique. Chapters start with a description of the technique, its applications, features, material and equipment

      requirements, and construction procedures. This is followed by a summary of recent work and implementation

      status, as obtained from the survey.

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