Performance Survey on Open-graded Friction Course Mixes
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.
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CHAPTER THREE DESIGN AND CONSTRUCTION OF OPENGRADED
CHAPTER FOUR PERFORMANCE MAINTENANCE AND REHABILITATION
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20 percent allowed areas Arizona Arizona DOT Asphalt Concrete asphalt content beneﬁts Califomia Cantabro test chip seals clogging compacted specimens construction dB(A debris dense dense-graded mix dense-graded mixtures draindown driver visibility Engineering European mixtures evaluated Federal Highway Administration FHWA ﬁber ﬁlms ﬁrst ﬂushed Fog seals Georgia Georgia DOT gradation graded mixture high air voids hydroplaning L.A. abrasion lane layer M.n. Max macrotexture maximum megagram mix design method Modiﬁed 20 modiﬁed asphalt binder modiﬁed binder moisture National Academy NCHRP Synthesis noise reduction North America OGFC mixtures OGFC pavements Open-Graded Friction Course open-graded mixes open-graded mixtures Oregon pavement surface percent air voids permeability phalt pores porous asphalt mixtures porous pavement raveling reduced rehabilitation reported rut resistance Senior Program sieve signiﬁcant speciﬁed spray storage silo texture tion tire noise trafﬁc traﬂic Transportation Research Board tread blocks typically U.S. agencies U.S. DOT U.S. mixtures Unknown unmodiﬁed wet weather winter maintenance