Modified Surface Treatments

Report No: 91-TAR3

Published in 1991

About the report:

Even though Virginia has been placing surface treatments for a number of years, we are still plagued with problems. The Research Council has been involved
with surface treatment work since the early 1960s, and during that time, several studies have been completed, and the following recommendations have been made: design methods should be used to determine quantities of aggregate and emulsion; state specifications should require that surface treatment aggregate is clean; surface treatments should not be placed when the surface temperature is lower than 70°F; a pilot vehicle should be used during the placement of a surface treatment on roads carrying more than 400 VPD; more emphasis should be placed on inspection and workmanship. Since the completion of these studies, some of the recommendations have been implemented, however, we have still been experiencing problems. By 1984, it was apparent that all areas of the state needed to be included in the study since all districts were experiencing problems. Therefore, the study was expanded to include the entire state and all types of aggregates.

Disclaimer Statement:The contents of this report reflect the views of the author(s), who is responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Virginia Department of Transportation, the Commonwealth Transportation Board, or the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. Any inclusion of manufacturer names, trade names, or trademarks is for identification purposes only and is not to be considered an endorsement.


  • Charles W. Payne

Last updated: December 25, 2023

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