Evaluation of Recycled Asphaltic Concrete

Report No: 77-R42

Published in 1977

About the report:

The energy crisis and the increasing cost of construction materials have heightened the need for efforts in conservation and intensified the search for new methods and processes within the highway construction industry. One of the results has been the development of several methods for recycling asphaltic concrete pavements through asphalt plants. The successful use of these methods may permit 1. the use of less asphalt binder; 2. the use of less aggregate; 3. a reduction in fuel consumption; 4. a retention of original curb elevations; and 5. corrective measures to be taken on exposed base or subbase courses.

The purpose of this study is to determine and evaluate the economics and the technical feasibility of recycling asphaltic concrete through a conventional asphalt batch plant. The evaluation includes plant modifications to reduce the adverse effect of the dryer burner flame on the crushed plant hot mix and to provide for adequate compliance with air pollution control regulations for stack emissions.

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.

Authors

Other Authors

R. V. Fielding, Charles S. Hughes, P.E.

Last updated: January 28, 2024

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