Port Authority of NY & NJ: Experiences with Aeronautical Asphalt Pavements

The experience of The Port Authority of NY & NJ, with the mixes presented, has been a reduction of plastic deformation. Of course, this is predicated on the assumption that these mixes are not placed on existing asphalt pavements that have been softened with jet fuel and/or hydraulic fluids. These mixes can be made stiffer by adopting the SHRP Level I mix design changes recommended. In addition, polymer modified asphalt with a PG of 76-22 and 82-22 adds to the design life of the pavement. To realize the full benefit of these mix designs a genuine QC/ QA plan is required for batching, loading and placing these mixes. The mixes are more susceptible to segregation and can produce an open surface texture, problems which can be alleviated by following good asphalt batching and placing procedures. Some agencies have specified the use of Re-Mix Pavers and/or Materials Transfer Vehicles to minimize the segregation problem.