The surface free energy of a solid is a material property that influences its interaction with other solids, liquids, and gases. Mineral aggregates are mixed with bitumen in the production of asphalt mixtures, and the interaction of aggregates with bitumen, water, or chemical modifiers affects the overall performance of the mixtures and, in turn, the pavement structure. A comprehensive characterization of the minerals that make up these aggregates can be used to explain the interactions between the aggregates and components used to bind the aggregates including bitumen, water, and chemical additives. This paper combines several techniques to quantify and describe or catalog mineral properties. These properties primarily include surface free energy, specific surface area, and surface carbon content of some of the most common minerals found in aggregates. The paper presents data that exemplify how this information can be used to characterize the moisture-induced stripping potential for bitumen–mineral combinations. Results indicate that a simple energy ratio calculated on the basis of adhesive bond energies from surface free energy measurements of the minerals and the bitumen can predict performance in asphalt mixtures and that a few minerals can form thermodynamically stable bonds with some bitumens that are inherently resistant to stripping.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Surface Energy Characteristics and Impact of Natural Minerals on Aggregate–Bitumen Bond Strengths and Asphalt Mixture Durability


    Weitere Titelangaben:

    Transportation Research Record: Journal of the Transportation Research Board


    Beteiligte:
    Miller, Clint (Autor:in) / Little, Dallas N. (Autor:in) / Bhasin, Amit (Autor:in) / Gardner, Nathan (Autor:in) / Herbert, Bruce (Autor:in)


    Erscheinungsdatum :

    01.01.2012




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Measuring the Effect of Moisture on Asphalt–Aggregate Bond with the Bitumen Bond Strength Test

    Moraes, Raquel / Velasquez, Raul / Bahia, Hussain U. | Transportation Research Record | 2011



    Effect of aggregate–bitumen compatibility on moisture susceptibility of asphalt mixtures

    Baldi-Sevilla, Alejandra / Aguiar-Moya, Jose Pablo / Vargas-Nordcbeck, Adriana et al. | British Library Online Contents | 2017


    Asphalt-aggregate mixture analysis system : AAMAS

    National Research Council, Transportation Research Board, USA | TIBKAT | 1991