[PDF] Evaluation Of Long Term Pavement Performance And Noise Characteristics Of Open Graded Friction Courses eBook
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"This report describes ... installations of open-graded friction course (OGFC) "quieter pavements" designed to reduce the noise generated at the tire/pavement interface."
This experimental project is being conducted as a part of WSDOT's effort to produce pavements that reduce the noise generated at the tire/pavement interface. Experimental sections of open-graded friction courses were built using asphalt rubber and SBS modified binders. A section of conventional Class 1/2 inch hot mix asphalt (HMA) serves as the control section for the two experimental sections. Sound intensity measurements were conducted using the On Board Sound Intensity (OBSI) method after construction. The most recent OBSI readings taken in December of 2009 indicated that the open-graded asphalt rubber and SBS modified sections were 3.5 to 2.0 decibels, respectively, quieter than the Class 1/2 inch HMA control section. This experimental evaluation will continue for the useful life of the pavement or a minimum of five years.
"This report describes ... installations of open-graded friction course (OGFC) "quieter pavements" designed to reduce the noise generated at the tire/pavement interface."
This synthesis will be of interest to construction, maintenance, pavement design, and materials engineers, pavement contractors, and others interested in the use of open-graded friction courses (OGFC) as an asphalt concrete pavement wearing surface. Information is provided on performance benefits and limitations of OGFC, material and mixture properties, and current construction practices in use in the United States and Europe. Advances in mixture design and construction techniques have overcome several of the performance limitations identified in early applications of OGFC, as well as enhanced the performance benefits associated with OGFC use. This report of the Transportation Research Board describes the current state of the practice with respect to the use of OGFC. Experience with the design, construction, and performance of OGFC is summarized, based on a review of the literature, documentation of experience from applications in the U.S. and Europe, and site visits to several states.
This synthesis will be of interest to pavement construction, maintenance, design, and materials engineers; pavement contractors; and others interested in the use of open-graded friction course (OGFC) mixes. It describes the current state of the practice on the use of OGFC mixes, including information regarding design, materials, construction, maintenance, and rehabilitation strategies. Alternative treatments to traditional OGFC are also identified and discussed. Information was collected by surveying U.S. and Canadian transportation agencies and by conducting a literature search to gather additional insight into North American and European practices. This TRB report describes the recent performance of North American OGFC mixes and European porous asphalt by identifying benefits and stress indicators. A new generation of OGFC mixes has evolved over the last 5 years with changes that have been reported to dramatically improve performance. This synthesis describes new materials and design methods being used, as well as the applicability of the new generation of open-graded mixtures to North American use.