One of the most common problems pavements have is the loss of adhesion and cohesion due to moisture damage.  Tropical countries and rainy seasons are some of the causes for this type of distress on roads.  Another factor that has high influence in this damage is the mineralogy of the aggregate.  This research shows the results of adhesion and cohesion between the aggregates from a limestone quarry and two types of sandstones from different quarries, highly used for roads projects from Colombia, and the asphalt 60-70 (1/10) mm, same PG58-22. For determining the adhesion and cohesion, Bitumen Bond Strength tests were made for dry and wet conditions.  In addition, the Surface Free Energy was measured for the aggregates and the asphalt.  The results indicated that those type of aggregates are highly susceptible to moisture damage, due all values of humidity Index Damage (HDI) were less than 0,5. This indicates that it is necessary to use modifiers for controlling the stripping of the pavements due to Moisture Damage.


    Access

    Download


    Export, share and cite



    Title :

    Adhesion at asphalt-aggregate interface through surface energy




    Publication date :

    2020




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown





    Studies on surface energy of asphalt and aggregate at different scales and bonding property of asphalt–aggregate system

    Yi, Junyan / Pang, Xiaoyi / Feng, Decheng et al. | British Library Online Contents | 2018


    Characterization of Adhesion and Healing at the Interface between Asphalt Binders and Aggregate Using Atomic Force Microscopy

    Gong, Minghui / Yang, Jun / Wei, Jianming et al. | Transportation Research Record | 2019


    Triaxial Frequency Sweep Characterization of Asphalt-Aggregate Adhesion in Saskatchewan Asphaltic Mixes

    Berthelot, C. / Anthony, A. / Wandzura, C. et al. | British Library Online Contents | 2010


    Investigation on Aggregate Adhesion Segmentation Method in an Asphalt Concrete Digital Image

    Guo, Qing-lin / Cheng, Yong-chun / Tao, Jing-lin | ASCE | 2015