US EPA

8215106 

Technical Report 

Comparison of Rutting Behavior of Asphalt Concrete under the F-4C/G and F-15C/D Aircraft 

"Murfee, JG" 

1988 

145 

"The purpose of this investigation was to compare the effect of the F-4 and the F-15 aircraft on rutting performance of standard airfield bituminous mixtures during hot weather conditions. The comparisons and conclusions herein were drawn from trafficking new 4 inch asphalt concrete overlying 12 inches of Portland cement concrete. The asphalt concrete was produced from Ac-30 asphalt cement and 100 percent crushed limestone of 3/4 inch maximum size. Pavement surface temperatures ranged from 80 deg F to 122 deg F during traffic. Both test strips were trafficked simultaneously, back and forth, in a channelized manner 6,000 times by loadcarts that simulated the heaviest designs of F-4 and F-15 aircraft. In one strip, the F-4 loadcart test wheel was loaded to 27.1 kips with cold tire inflation pressures of 265 psi. In the other strip, the F-15 loadcart test wheel was loaded to 30.5 kips with cold tire inflation pressure of 355 psi. It was learned that it takes 5,000 passes of the F-4 to produce a 0.4 inch rut depth in this particular mix, but only 1,000 passes of the F-15. This rut depth of 0.4 inch was far from failure of the layer and was the maximum reached in the F-4 test strip. The dominant mode of rutting was densification with plastic flow of the mixture estimated to have caused about 12 percent of the rutting." 

Asphalt | Concrete | Landing fields | Bituminous coatings | Cements | Density | Failure | Hot weather | Layers | Pavements | Plastic flow | Sizes(Dimensions) | Surface temperature | Test and evaluation | Wheels | Runways | F-4 C/G aircraft | F-15 C/D ai