Research has been directed towards establishing the level and rate of change of pavement surface friction on ten sections of roads in Arizona. Friction measurements have been made by the stopping distance and decelerometer methods at speeds ranging from 30 to 60 mph. The test sections were sampled with 6-inch diameter bits and the cores were evaluated for laboratory friction measurements and surface asperity with a profilograph. The two-year testing period relate high pavement friction to aggregates which are not susceptible to polishing. Decelerometer measurements were tested for adequacy in establishing reliable values of surface friction, and most comparisons involve stopping distance numbers. Because of the unpredictability of vehicle behavior upon the sudden application of brakes at high speed, a 2-wheel diagonal braking procedure was investigated and found to yield acceptable friction values. (BPR abstract)


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    Titel :

    Frictional Characteristics of Pavement Surfaces


    Beteiligte:
    R. A. Jimenez (Autor:in)

    Erscheinungsdatum :

    1970


    Format / Umfang :

    64 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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