Accession Number:

ADA275046

Title:

Asphaltic Concrete Performance Under Heavy Fighter Aircraft Loading

Descriptive Note:

Final rept. Apr 1988-Nov 1990

Corporate Author:

AIR FORCE CIVIL ENGINEER SUPPORT AGENCY TYNDALL AFB FL ENGINEERING AND SERVICES LAB

Report Date:

1993-02-01

Pagination or Media Count:

355.0

Abstract:

Rutting of asphaltic concrete pavements is rapidly becoming a cause for concern among AF civil engineers. Modern fighter aircraft often have operating tire pressures well above the capacity of the existing pavements. To reduce rutting, a mix design technique that explicitly considers the expected loading was investigated. Pavement test sections were constructed and trafficked by high pressure tires. Variations in test sections included mix design Marshall and gyratory, airfield design 4- and 6-inch flexible and rigid composite, and wheel loading F-15CD. Pavement loading was monitored throughout trafficking, including dynamic load magnitude, position, and velocity. Pavement response was measured by taking profilographs before, during, and after trafficking. Damage parameters were defined and calculated to evaluate test section response and performance. Damage varied significantly between test sections, with the most obvious factors being the mix design and the base layer support. The gyratory test sections outperformed their Marshall counterparts with the gyratory composite section performing the best. This study has shown that pavements can be designed using gyratory methods. However, improvements in base layer performance are needed to improve the overall performance of flexible airfield pavements. Flexible pavements, Gyratory, Rutting, Trafficking, Marshall.

Subject Categories:

  • Terminal Flight Facilities
  • Ceramics, Refractories and Glass
  • Civil Engineering
  • Construction Equipment, Materials and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE