Asphaltic Concrete Performance Under Heavy Fighter Aircraft Loading
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-15C/D). 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1993
- Accession Number
- ADA275046
Entities
People
- D. A. Timian
- M. B. Hardy
- R. H. Sues
- S. M. Dass
- W. C. Dass