Application of Statistical Methods in Evaluating Asphalt Mixture Homogeneity

    Volume 39, Issue 3 (May 2011)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Published Online: 8 February 2011

    Page Count: 8


    Peng, Y.
    Associate Professor, Institute of Transportation Engineering, Zhejiang Univ., Hangzhou,

    Sun, L. J.
    Professor, Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji Univ., Shanghai,

    (Received 21 October 2009; accepted 23 December 2010)

    Abstract

    Homogeneity is one of the most important factors affecting the performance-related properties of asphalt mixtures. Pavement condition surveys have shown various patterns of distress due to segregation and other types of non-uniformity. Using digital image processing, a statistical method was developed to evaluate asphalt mixture homogeneity quantitatively. Aggregate particle distribution in asphalt mixtures was described and analyzed by aggregate particle frequency statistic and distance statistic. The index of homogeneity was presented through aggregate particle distribution. The relevance of homogeneity to some mixture performance properties was also investigated. Results show that asphalt mixture homogeneity can be assessed quantitatively by the values of aggregate particle frequency statistic and distance statistic. Moreover, homogeneity dominates variations in mixture performance properties.


    Paper ID: JTE102795

    DOI: 10.1520/JTE102795

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    Author
    Title Application of Statistical Methods in Evaluating Asphalt Mixture Homogeneity
    Symposium , 0000-00-00
    Committee D04