Stone Matrix Asphalt (SMA) for Airfield Pavements 2010 FAA Worldwide Airport Technology Transfer Conference . Brian Prowell Don Watson Graham Hurley Ray Brown. Acknowledgements.
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Stone Matrix Asphalt (SMA) for Airfield Pavements2010 FAA Worldwide Airport Technology Transfer Conference
Aggregate SkeletonStone Matrix Asphalt Mix
Aggregate SkeletonDense-Graded Mix
SMA Performance in the USA
With the repeated load test the permanent deformation performance of SMA mixtures and P401 mixtures were not significantly different.
Test combines rutting performance with moisture susceptibility
With Hamburg, rutting very similar for P-401 and SMA
Constructed in 1999
Provided good performance up through 2010
Some water issues
More rubber build up
Based on good performance at Aviano, SMA was used at Spangdahlem in 2007
After mixture was milled, approximately 2 weeks of rainfall occurred causing the asphalt mixture to become soaked with moisture
Plans are underway to remove and replace the SMA at Spangdahlem
1Based on laboratory tests performed as part of this study.
2Based on review of the literature or in-service performance.