Evaluation of Approaches to Improve Longitudinal Joints in Mississippi Overlay Projects

The Mississippi Department of Transportation (MDOT) has experienced longitudinal joint issues (e.g. raveling) on many pavements, often caused by oxidation due to increased water and air intrusion into the pavement. Because the asphalt at or near the joint is usually less dense than the remaining pavement mat, this is not uncommon. Additionally, with increasing focus on pavement preservation, thin-lift overlays (e.g. 25 mm overlay or less) are beginning to garner attention from DOTs. Arguably, longitudinal joint performance is of greater concern in thin-lift pavements as satisfactory joint density is generally more difficult to achieve as lift thickness decreases. In order to improve performance of longitudinal joints and, consequently, the pavement system as a whole, some means of performance characterization is needed. Permeability (or infiltration) testing shows promise as a field characterization tool for longitudinal joint performance. It directly measures ability of water and air to penetrate pavement systems, which may correlate to distresses (e.g. raveling). Permeability testing could also be useful in evaluating benefits of alternative joint techniques (e.g. joint sealers). Objectives of this report are to use permeability measurements to: 1) evaluate longitudinal joint performance of thin-lift overlays and 2) evaluate effectiveness of RePLAY, an agricultural-based joint sealer. To this end, two thin-lift test sections in Baldwyn, MS are being tested using permeability equipment developed largely at Mississippi State University. Permeability results to date indicate crack development at some for thin-lift overlays with and without RePLAY joint treatment, and 2) evaluate the permeameter used in this report against other traditional permeability methods. Permeability results identified longitudinal joint cracking, though this cracking was largely influenced by underlying layers rather than longitudinal joint quality or RePLAY treatment. The permeameter studied related to other field permeameters and appears promising as a versatile field pavement characterization tool.

  • Record URL:
  • Supplemental Notes:
    • Project title: Full Depth Reclamation for High Traffic Applications.
  • Corporate Authors:

    Mississippi State University, Mississippi State

    Department of Civil and Environmental Engineering
    Mississippi State, MS  United States  39762-9546

    Mississippi Department of Transportation

    Research Division, P.O. Box 1850
    Jackson, MS  United States  39215-1850

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Cox, Ben C
    • Howard, Isaac L
    • Ivy, Joe
  • Publication Date: 2015-12-18

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 169p

Subject/Index Terms

Filing Info

  • Accession Number: 01593734
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/MS-DOT-RD-15-250-Volume #
  • Files: TRIS, ATRI, USDOT, STATEDOT
  • Created Date: Mar 1 2016 11:26AM