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i

Experimental demonstration of liquid antistrip in hot mix asphalt pavement.

File Language:
English


Details

  • Corporate Creators:
    Maine. Dept. of Transportation. Transportation Research Division
  • Subject/TRT Terms:
  • Publication/ Report Number:
    Technical Report 17- 07
  • Resource Type:
    Tech Report
  • Geographical Coverage:
  • Corporate Publisher:
    Maine. Dept. of Transportation. Transportation Research Division
  • Abstract:
    In 2010, the Maine Department of Transportation constructed two projects with the use of Liquid Antistrip.

    The intent of these projects is to determine if an anti-strip admixture will improve the pavement

    quality in Northern Maine as well as other areas.

    In recent years, the Department has noticed many areas, particularly in Northern Maine, experiencing loss

    of aggregate in the wheel paths on recently placed HMA. This project has been selected due to its close

    proximity to other previously constructed projects that have exhibited premature failure and durability

    issues, most generally raveling and loss of aggregate from the wearing course. It has generally been

    accepted that the use of ant-strip additives was not a requirement when using virgin aggregate mixtures,

    but there is evidence from other State and Canadian Province studies that indicate that moisture damage

    and aggregate stripping incidence increases proportionally with the increase in recycled asphalt (RAP)

    percentages. This study is being conducted to determine which criteria determines liquid anti-strip use,

    and if anti-strips will be required.

    The occurrence of aggregate raveling and stripping is not isolated to Region 5, but is also evident in other

    parts of the state. This indicates that the issue may be related to not only aggregate sources, but RAP

    quality and percentages.

    As previously stated, liquid anti-strip has been used extensively by our Canadian neighbors in New

    Brunswick. Their aggregates are very similar in nature to those in Northern Maine as well as similar

    climatic conditions. They have been using this admixture for approximately 10 years. Irving Oil, as well

    as All States Asphalts, supply this material. Thus, material availability is not an issue. Anticipated added

    costs for this material to be incorporated in our Hot Mix Asphalt is estimated to be in the range of $1 to $2/HMA ton.

  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha256:4f5c2cd471406722eb07559a42630455237cabfcb44adc507b43324735d7641d
  • Download URL:
  • File Type:
    Filetype[PDF - 761.41 KB ]
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