The U.S. Army rehabilitated the main runway (200' in width--8,000' in length) at Phillips Army Airfield which is located at Aberdeen Proving Grounds. The contract included removal and reconstruction of a portion of the existing main runway, installation of underdrains, cold milling and resurfacing of the main runway, and the surface treatment of the runway shoulders. The cold milling operation was somewhat unique in that finished grades were provided on a 50' grid system throughout the area of the runway to be milled. This required variable-depth milling in order to meet the predetermined finished grades. Density requirements for the subgrade aggregate base and hot mix asphalt were extremely stringent. The in-place density requirements for the subgrade and aggregate base were 100% of the laboratory density. The hot mix asphalt in-place density was required to be 98% of the laboratory density which was achieved using 75 blows, in lieu of the normal 50 blows, of the marshall hammer. The resurfaced portion of the runway also required the cleaning of existing joints, sealing and placement of a 2' wide strip of non-woven fabric over the joint. AC20 asphalt cement was used as a tack coat for the fabric. (Author)

  • Corporate Authors:

    Maryland Asphalt Association, Incorporated

    Empire Towers, 7310 Ritchie Highway, Suite 309
    Glen Burnie, MD  United States  21061
  • Publication Date: 1983-12

Media Info

  • Features: Photos;
  • Pagination: p. 11-12
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00381715
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 30 1984 12:00AM