Screening of South Dakota Asphalt Mixes for Moisture Damage Using Conventional and Innovative Approaches

Moisture-induced damage (stripping) is a major distress in asphalt pavements. This study was undertaken to evaluate the effects of chemical Warm Mix Asphalt (WMA) additives, Reclaimed Asphalt Pavement (RAP), Anti-Stripping Agent (ASA), and hydrated lime on moisture-induced damage potential of asphalt mixes. For this purpose, plant-produced asphalt mixes containing foregoing additives and asphalt binder-aggregate systems consisting of different combinations of different binder grades, aggregates, and additives were tested. Effects of moisture and freeze-thaw cycles on resistance of mixes to stripping were evaluated by determining different fracture energy parameters obtained from Indirect Tension (IDT) and Semicircular Bend (SCB) tests. Also, the effect of moisture and freeze-thaw on adhesion of different combinations of four binder blends of various grades, additives, and aggregates were investigated by conducting Binder Bond Strength (BBS) tests. Fracture-energy-based parameters determined based on IDT and SCB tests showed potential for being applied for screening of mixes with respect to their propensity to moisture-induced damage. Also, the BBS test, as a quick, direct, inexpensive, and effective method, indicated the combinations of the aggregates, additives, and binders, which produce mixes with the maximum resistance to moisture-induced damage and successfully singled out binder-aggregate combinations with a high stripping potential.

  • Record URL:
  • Supplemental Notes:
    • This document was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
  • Corporate Authors:

    South Dakota State University, Brookings

    Department of Civil and Environmental Engineering
    Brookings, SD  United States  57007

    Mountain-Plains Consortium

    North Dakota State University
    Fargo, ND  United States  58108

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Authors:
    • Ghabchi, Rouzbeh
    • Acharya, Rajan
  • Publication Date: 2020-10

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 97p

Subject/Index Terms

Filing Info

  • Accession Number: 01759925
  • Record Type: Publication
  • Report/Paper Numbers: MPC-20-421
  • Contract Numbers: MPC-530
  • Files: UTC, TRIS, ATRI, USDOT
  • Created Date: Nov 17 2020 12:20PM