Development of Maintenance Practices for Oregon F-Mix: Interim Report

1999PDFTech ReportRogge, DaveHunt, Elizabeth A.Oregon. Department of TransportationUnited States. Federal Highway AdministrationOregon. Dept. of TransportationUnited StatesOregonAsphalt pavementsAsphalt mixturesPavement maintenanceLiterature reviewsF-mix asphaltFHWA-OR-RD-00-01SPR 371The Oregon Department of Transportation (ODOT) produces an open-graded asphalt pavement(F-mix) unlike most open-graded pavements used in the United States. Its 25 mm maximum aggregate size and typical lift thickness of 50 mm is more like the porous asphalt pavements used in Europe. This type of pavement has been in use in Europe since the early 1980?s and widely used in Oregon only since the late 1980?s. Consequently, maintenance procedures for this type of pavement are still being developed and documented. This paper summarizes progress through March of 1999 on a study of F-mix maintenance needs and techniques being conducted by Oregon State University (OSU) and ODOT. The report includes information obtained from literature review, site investigations, and a survey of ODOT maintenance supervisors. 45 p.95