Installation and Performance of Lightweight Aggregate Asphaltic Concrete Test Sections

Report No: 70-R9

Published in 1970

About the report:

In 1966 and 1968 test sections of asphaltic concrete overlays fabricated with coarse lightweight aggregate and fine limestone were installed in the Roanoke-Bedford area. The experimental mixes used were designed in an attempt to develop skid resistant surface mixes for use in predominantly limestone areas. The mixes incorporated 20%-45% of lightweight aggregate in several different sizes. The purpose of the test sections was to evaluate the skid resistance and durability of several of the lightweight mixes under field conditions. Skid tests have been performed on the test sections at regular intervals and the results indicate that the mixes are maintaining sufficient skid resistance. This possible alternative method of providing good skid resistant roads in areas lacking polish resistant aggregate might provide significant money savings.

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.


  • G. W. Maupin, Jr., P.E.

Last updated: February 12, 2024

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