Volume 41, Issue 1 (January 2013)

    Performance Evaluation of Asphalt-Rubber Stone Matrix Asphalt Mixtures with Warm Mix Asphalt Additives

    (Received 30 January 2012; accepted 3 July 2012)

    Published Online: 2012

    CODEN: JTEOAD

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    Abstract

    Three kinds of warm mix asphalt (WMA) additives (Sasobit, Evotherm, and CWA) were used in asphalt-rubber stone matrix asphalt (AR-SMA) to reduce the mixing and compaction temperatures of AR-SMA mixtures. In hot mix asphalt (HMA) mixture designs with the same air voids, the compaction temperatures of AR-SMA mixtures with different WMA additives were determined. The wheel tracking test, low temperature beam bending test, and indirect tensile test were conducted in order to evaluate the high temperature performance in terms of the resistance to rutting, the low temperature performance in terms of the resistance to cracking, and the moisture susceptibility of AR-SMA mixtures with WMA additives. The results indicate that the addition of Sasobit can improve high temperature performance significantly relative to the control mixture (AR-SMA without WMA additive), whereas the other additives yield no significant differences. Three WMA additives have significant effects on low-temperature performance, but they do not significantly increase moisture susceptibility relative to the control mixture.


    Author Information:

    Cao, Weidong
    School of Civil Engineering, Shandong Univ., Jinan, Shandong Province

    Liu, Shutang
    School of Civil Engineering, Shandong Univ., Jinan, Shandong Province


    Stock #: JTE20120014

    ISSN: 0090-3973

    DOI: 10.1520/JTE20120014

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    Author
    Title Performance Evaluation of Asphalt-Rubber Stone Matrix Asphalt Mixtures with Warm Mix Asphalt Additives
    Symposium , 0000-00-00
    Committee D04