AFTER 12 YEARS...ZERO MAINTENANCE

IN OCTOBER 1960 RUNWAY 7-25 AT ALAMEDA NAVAL AIR STATION ON SAN FRANCISCO BAY RECEIVED A THREE-INCH ASPHALTIC CONCRETE OVERLAY IN TWO 1.5-INCH LIFTS. TWO THREE-WHEEL BREAKDOWN ROLLERS, ONE 15-TON PNEUMATIC ROLLER, A 12-TON TANDEM ROLLER, AND ONE 30-TON PNEUMATIC ROLLER ACCOMPLISHED THE COMPACTION, IN THAT ORDER. TO ASSURE UNIFORMITY, ALL AGGREGATE CAME FROM THE SAME SOURCE, BUT THREE NEARBY ASPHALT PLANTS WERE USED. TWO PLANT INSPECTORS, TWO LAYDOWN INSPECTORS, AND A FIELD LABORATORY STAFF PERFORMED THE NECESSARY CONTROL TESTS. THE ASPHALT INSTITUTE ASSISTED DURING THE CONSTRUCTION PHASE IN DEVELOPING THE ROLLING TECHNIQUES AND ASSISTING WITH CONTROL TESTING AT THE ASPHALT PLANTS AND THE FIELD LABORATORY. FOR 1970 RUNWAY TRAFFIC AVERAGED 10,124 OPERATIONS PER MONTH 60% OF IT CARRIER-TYPE AIRCRAFT WITH SINGLE GEAR LOADS OF 20,000 LB. RECORDS OF THE AIRBASE SHOW THAT NO REPAIRS HAVE BEEN PERFORMED ON THE RUNWAY SINCE 1960. INSPECTION IN JULY 1971 REVEALED MINOR CRACKING AND RAVELLING, BUT NONE SO SEVERE AS TO REQUIRE MAINTENANCE. THE ONLY FORESEEABLE MAINTENANCE IS A FOG SEAL.

• Authors:
  • Berry, L K
• Publication Date: 1973-1

Media Info

• Features: Photos;
• Pagination: p. 10-1
• Serial:
  • Asphalt Institute Quarterly
  • Volume: 25
  • Issue Number: 1

Subject/Index Terms

• TRT Terms: Airport runways; Bituminous overlays; Bituminous pavements; Durability; Pavements; Paving
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00207506
• Record Type: Publication
• Files: TRIS
• Created Date: May 7 1973 12:00AM