Because of environmental conservation and sustainability concerns, reclaimed asphalt pavements and recycled asphalt shingles are increasingly used in the asphalt paving industry to replace virgin asphalt and aggregate materials. However, these recycled materials are often highly aged and can cause cracking issues for asphalt pavements. Additionally, other factors such as binder additives, modifiers, and multiple warm-mix asphalt technologies can alter the performance of the mixtures both positively and negatively. The volumetric mix design alone is not sufficient for evaluating the potential cracking behavior of asphalt mixes. Although many cracking test methods are available, there is no widely accepted performance-related cracking test method that is practical enough for routine use in asphalt mix designs. This paper presents a newly developed, simple, and practical cracking test method for asphalt mix designs. The new cracking test method is repeatable, time- and cost-effective, easily implemented, sensitive to mix compositions, and well correlated to field performance. The new cracking test is performed at an intermediate temperature of 25°C and a loading rate of 50 mm/min. Furthermore, a unitless index is proposed as the cracking resistance indicator for evaluation of the cracking resistance of asphalt mixes. Additionally, the effectiveness of the new cracking test was validated with the test results from FHWA’s accelerated loading facility.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    New and Simpler Cracking Test Method for Asphalt Mix Designs


    Weitere Titelangaben:

    Transportation Research Record: Journal of the Transportation Research Board


    Beteiligte:
    Im, Soohyok (Autor:in) / Zhou, Fujie (Autor:in)


    Erscheinungsdatum :

    01.01.2017




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Selection and preliminary evaluation of laboratory cracking tests for routine asphalt mix designs

    Zhou, Fujie / Im, Soohyok / Hu, Sheng et al. | British Library Online Contents | 2017


    Low-Temperature Thermal Cracking of Asphalt Binder by Asphalt Binder Cracking Device

    Kim, Sang-Soo / Wysong, Zachary D. / Kovach, Jonathan | Transportation Research Record | 2006


    Low-Temperature Thermal Cracking of Asphalt Binder by Asphalt Binder Cracking Device

    Kim, Sang-Soo / Wysong, Zachary / Kovach, Jonathan | Transportation Research Record | 2006


    Development of a Simple Fatigue Cracking Test for Asphalt Binders

    Zhou, Fujie / Karki, Pravat / Im, Soohyok | Transportation Research Record | 2017


    Making Icing Test Flights Simpler and Less Expensive

    Jeck, Richard | SAE Technical Papers | 2003