A small-scale apparatus was constructed to measure the 'adhesion temperature', at which bitumen 'pick-up' onto tyre rubber (and subsequent tracking) occurs. Loading frequencies equivalent to traffic speeds of over 100 km hr −1 and realistic tyre footprint pressures were used. The adhesion temperature increased with loading frequency, but all of the bitumens and polymer-modified bitumens studied had adhesion temperatures (i.e. the temperature at which the bitumen failed cohesively) at or below 60 °C, a temperature easily reached in the field. The results confirm the findings of an earlier slow-speed study (at 1.6 km hr −1 ) and indicate that the adhesion temperature under realistic loading conditions is governed by the properties of the bitumen, i.e. the bitumen yield stress is lower than that of the adhesive bond formed as the tyre traverses the bitumen.


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    Titel :

    Measurement of bitumen-tyre adhesion temperatures at realistic loading rates


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2017




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch



    Klassifikation :

    BKL:    56.24 / 56.24 Straßenbau




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