An Investigation of the Effects of Elevated Mixing Temperatures on the Properties of Asphalt Cement

Report No: 71-R22

Published in 1972

About the report:

This laboratory investigation was instituted to determine the feasibility of increasing the design mixing temperature for hot-mix asphaltic concrete. Based on data obtained from modified thin film oven tests, it appears that the upper design limit could be increased to 300°F without appreciably affecting the durability of the asphalts studied. The data also indicate that softer grade asphalts (120-150 penetration) remain considerably higher in penetration value than harder asphalts (50-60 and 60-70) after the modified thin film test.

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.


Other Authors

J. Wayne Aderhold

Last updated: February 9, 2024

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