The fracture characteristics of semirigid asphalt concrete (SRAC) prepared from a highly porous asphalt mixture (matrix) with 18% to 22% air voids and cement paste were evaluated. Two asphalt binders and several polymer-modified cement pastes that were grouted into the porous matrix were used. The SRAC beam specimen was prepared, and an initial notch was made by cutting with a saw at the bottom center of each beam for the static three-point bending (3PB) test at low temperatures (10°C, 0°C, and −10°C). Fracture toughness (KIC) was calculated with 3PB test data to examine the fracture resistance of the SRAC. The two SRAC binders, a normal asphalt (PG 64-22) and a polymer-modified asphalt (PG 76-22), exhibited significant differences in KIC values within the temperature and the paste type. The SRAC using PG 76-22 showed KIC values 17% higher than the SRAC using PG 64-22 at −10°C. Therefore, the SRAC using PG 76-22 binder is expected to have better low-temperature fracture resistance than the SRAC using PG 64-22 binder in the region where the low temperature commonly reaches −10°C.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Evaluation of Fracture Toughness of Semirigid Asphalt Concretes at Low Temperatures


    Weitere Titelangaben:

    Transportation Research Record: Journal of the Transportation Research Board


    Beteiligte:
    Baek, Sung-Hyun (Autor:in) / Hong, Jun-Pyo (Autor:in) / Kim, Sung Un (Autor:in) / Choi, Jung-Soon (Autor:in) / Kim, Kwang-Woo (Autor:in)


    Erscheinungsdatum :

    01.01.2011




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Low-Temperature Fracture Characteristics of Selected Warm-Mix Asphalt Concretes

    Yoo, Min-Yong / Jeong, Seung-Ho / Park, Ji-Yong et al. | Transportation Research Record | 2011



    Improving thermal properties of asphalt concretes

    Papagiannakis, A. T. / Kaphle, R. / Khalili, M. | TIBKAT | 2018


    Fracture Morphology and Fracture Toughness Measurement of Polymer-Modified Asphalt Concrete

    Bhurke, A. S. / Shin, E. E. / Drzal, L. T. et al. | British Library Conference Proceedings | 1997