In this panel discussion of the performance of pavement with graded aggregate bases, case histories are presented of specific projects. Projects in North Carolina are described in which untreated aggregate bases, treated full-depth bases and concrete bases have been utilized. A representative selection is also presented of several constructued projects in Maryland, where the use of graded aggregate materials will continue to be specified as base courses in flexible pavement construction for the forseeable future. Experience in Virginia is reviewed where considerable use has been made of the controlled strip method for checking density, particularly in stone bases. In a review of production control systems in aggregate industries, the New York State Department of Transportation requirements are presented, and the point is made that in some states graded aggregate is used only as subbase beneath bases that are stabilized with asphalt or other additives. In such cases gradation control is not required to be as close as where the material is designed to serve as heavy duty base course. Distinction is made between subbase material and quality controlled base materials.

  • Supplemental Notes:
    • Proceedings from A Conference on Utilization of Graded Aggregate Base Materials in Flexible Pavements, held March 25-26, 1974, Oakbrook, Illinois.
  • Corporate Authors:

    National Crushed Stone Association

    1415 Elliot Place, NW
    Washington, DC  United States  20007
  • Authors:
    • Drake, W B
    • Berrier, L H
    • Greene, W B
    • Fielding, R V
  • Publication Date: 1974-3

Subject/Index Terms

Filing Info

  • Accession Number: 00265142
  • Record Type: Publication
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: Feb 27 1975 12:00AM