United States Department of Transportation
i
Asphalt surface treatment practice in southeastern United States.
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2014-07-01
[PDF-3.09 MB]
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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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