Field and Laboratory Study of Trinidad Lake Asphalt Mixtures at the NCAT Test Track

Trinidad Lake Asphalt (TLA) is often used in hot mix asphalt (HMA) pavements to improve mixture temperature stability. In this document the performance of TLA during construction, laboratory tests, and field tests is examined. The experience of using TLA pellets during construction and mix design is also described. Laboratory tests quantified mixture stiffness, mixture fatigue, rutting resistance, cracking and moisture susceptibility. A TLA test section and a control section were constructed in 2009 at the National Center for Asphalt Technology (NCAT) Test Track. Instrumentation of the test track included temperature probes, earth pressure cells, and strain gauges. Field performance compared cracking and rutting, and ride quality/roughness for both the control section and the TLA section. Pavement responses measured included: longitudinal strain, transverse strain, base pressure, and subgrade pressure. Data was analyzed for temperature and seasonal changes.

  • Record URL:
  • Corporate Authors:

    National Center for Asphalt Technology

    Auburn University, 277 Technology Parkway
    Auburn, AL  United States  36830
  • Authors:
    • Timm, David H
    • Robbins, Mary M
    • Willis, J Richard
    • Tran, Nam
    • Taylor, Adam J
  • Publication Date: 2014-6-17


  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 114p

Subject/Index Terms

Filing Info

  • Accession Number: 01539451
  • Record Type: Publication
  • Report/Paper Numbers: NCAT Report 14-05
  • Files: TRIS
  • Created Date: Jun 24 2014 10:20AM