The Pavement Preservation Expert Task Group has recently compiled a list of recent pavement preservation research needs and active projects related to asphalt recycling and other forms of preservation treatment. The research "catalog" has been broken down by treatment type / topic area, or may be downloaded as a single document below (very large file!). Thanks to Russ Thielke of NYSDOT for compiling this information and to Todd Thomas of SemMaterials, Inc. for making these research needs statements available.
Joint Filling and Sealing Detailed Project Information
Micro-Surfacing Mix Design Procedures
Misc. Preservation / Preventive Maintenance
Complete Compilation of Research Needs
(contains all of the above)