The FHWA Office of Pavement Technology is actively involved with all these research projects and demonstrations and is also working in cooperation with FHWA Turner-Fairbank Highway Research Center''s (TFHRC) Bituminous Mixtures Laboratory to develop and monitor WMA demonstration projects and research and also to advance the knowledge and state of practice of these materials and technologies. FHWA will actively support further WMA research and validation through material sampling and performance testing provided through the Office of Pavement Technology''s Mobile Asphalt Mixture Testing Laboratory (MAMTL) in addition to continued WMA research activities at TFHRC.

The MAMTL was on site for material sampling and testing during the Missouri Department of Transportation WMA demonstration project on Hall Street in St. Louis. This demonstration project included construction of asphalt pavements using the Aspha-Min®, Sasobit®, and Evotherm＆#8482; products by Pace Construction. A large amount of volumetric and performance specimens were immediately fabricated for testing in addition to loose mix sampled for later testing to investigate any effects due to reheating and residual moisture. The immediately fabricated specimen testing has been completed. A final report of the test results and findings will be published upon completion of all testing and analysis