EVALUATION OF SURFACE TREATMENTS. FINAL REPORT

This report describes the installation, evaluation, and performance of surface treatment test sections placed during 1983, 1984, and 1985. The study was initiated because of adhesion problems between asphalt and river gravel in the Fredericksburg District. However, observations by the researchers and complaints from other districts indicated that adhesion problems were also prevalent when crushed stone was used as the cover material. The study was continued through 1985 in order to include crushed stone. The results of this study indicate that the quality of a surface treatment is greatly influenced by the quantity of aggregate used, its cleanliness, the type and gradation of the aggregate, material adhesion, and construction techniques. It was found that some gravels perform better than others, but none perform as well as crushed stone. It was also learned that steel wheel rollers embed aggregate better than rubber tire rollers, but because of the irregular cross sections of so many secondary roads, the two should be used together. The recommendations in this report include the following: material quantities should be determined by a design method; adjustments should be made for road surface characteristics and traffic speeds and volumes; better construction techniques should be employed; river gravels should not be used on roads in traffic groups V and above; and, because of the problems caused by the wide tolerance in gradation on the No. 4 screen of the No. 8 aggregate used in surface treatments, the gradation should be changed to 12% plus 12% passing the No. 4 screen, 2% plus 2% passing the No. 8 screen, and 1% plus 1% passing the No. 16 screen.

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• Record URL:
  https://rosap.ntl.bts.gov/view/dot/19266
• Corporate Authors:

  Virginia Transportation Research Council

  530 Edgemont Road
  Charlottesville, VA  United States  22903

  Virginia Department of Transportation

  1401 East Broad Street
  Richmond, VA  United States  23219

  University of Virginia, Charlottesville

  Center for Transportation Studies, P.O. Box 400742
  Charlottesville, VA  United States  22904-4742
• Authors:
  • Payne, C W
  • Mahone, D C
• Publication Date: 1990-7

Media Info

• Features: Appendices; Photos; References; Tables;
• Pagination: 88 p.

Subject/Index Terms

• TRT Terms: Adhesion; Aggregate gradation; Aggregates; Alluvium; Asphalt emulsions; Construction management; Crushed rock; Performance evaluations; Recommendations; Surface treating; Test sections
• Uncontrolled Terms: River gravel
• Old TRIS Terms: Aggregate characteristics
• Subject Areas: Construction; Design; Geotechnology; Highways; Materials; Pavements; Research; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00496758
• Record Type: Publication
• Report/Paper Numbers: VTRC 91-2R, Proj No. 9182
• Files: NTL, TRIS, STATEDOT
• Created Date: Aug 31 1990 12:00AM