Volume 21, Issue 5 (September 1993)

    Compaction of Asphalt Mixtures for Laboratory Testing: Evaluation Based on Density Profile

    (Received 17 August 1992; accepted 19 January 1993)

    CODEN: JTEOAD

      Format Pages Price  
    PDF Version 8 $25   ADD TO CART


    Abstract

    Cylindrical specimens are commonly used in laboratory testing of asphaltic paving mixtures. This paper describes a study that examined the influence of different compaction methods on the resulted density distributions of cylindrical specimens using a laboratory twin-probe nuclear density gage. Two common sizes of 102 mm (4 in.) cylindrical specimens, namely 64-mm (2.5-in.) high Marshall-size specimens, and 200-mm (7.87-in.) high triaxial test specimens, were considered in the test program. Four compaction methods were studied: drop-hammer compaction, kneading compactions, single-plunger compression, and double-plunger compression. In the case of 200-mm-tall specimens, the effect of compaction in layers was also examined. Test results show that, except for the kneading compaction method, the other three methods could all produce 64-mm-tall Marshall-size specimens of relatively uniform density distributions with density variation within 0.05 g/cm3. For 200-mm-tall specimens, only the double-plunger compression method was able to produce specimens with density distribution of similar uniformity.


    Author Information:

    Fwa, TF
    Senior lecturer, research assistant, and senior lecturer, National University of Singapore, Singapore,

    Low, BH
    Senior lecturer, research assistant, and senior lecturer, National University of Singapore, Singapore,

    Tan, SA
    Senior lecturer, research assistant, and senior lecturer, National University of Singapore, Singapore,


    Stock #: JTE11786J

    ISSN: 0090-3973

    DOI: 10.1520/JTE11786J

    ASTM International is a member of CrossRef.

    Author
    Title Compaction of Asphalt Mixtures for Laboratory Testing: Evaluation Based on Density Profile
    Symposium , 0000-00-00
    Committee D18