Synthesis of Information Related to Highway Problems. Topic 45-15. Fiber Additives in Asphalt Mixtures

Although fiber additives have been used in asphalt mixtures for a number of years, the industry lacks information to guide their evaluation, specification, and use in applications other than stone matrix asphalt (SMA) and open graded friction course (OGFC). A synthesis document summarizing the current state of knowledge and current practices, concerning the use of fiber additives, would be highly beneficial. It can be a basis for (1) agency decisions concerning the use of fiber additives, (2) identification of the challenges and benefits of fiber additives, and (3) identification of the specific knowledge gaps that currently exist. The scope of this synthesis study will focus on the use of fiber additives to improve pavement performance. Results will benefit government agencies, researchers, and the road-building industry in providing guidance on successful practices for the evaluation, specification, mix design, and construction of asphalt pavements containing fibers. This synthesis will include a literature review and a survey of state and local departments of transportation (DOTs), Canadian ministries of transportation and other public agencies. International agencies' experience will be reviewed as available. From the results of the survey, 3 to 5 agencies are to be selected and case examples of their practices will be developed. Lessons learned and gaps in information will also be covered. Information gathered will include, but not be limited to the following: (1)Types of fibers (materials, dimensions, applications, sources, etc.); (2) Specifications, test methods, and acceptance criteria; (3) Fiber quality, interactions, and supply issues; (4) Health, safety, and environmental considerations; (5) Usage of fibers on both an experimental and production basis; (6) Mix design, production, placement and acceptance issues/resolutions; (7) Impact on performance (climate, traffic, application, fiber type, etc.); (8) Performance mechanisms/material characteristics; (9) Cost/benefits; and (10) Impact on recycled materials


  • English


  • Status: Active
  • Contract Numbers:

    Project 20-05, Topic

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program (NCHRP) Synthesis

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC    20001
  • Project Managers:

    Vlasak, Donna

  • Performing Organizations:

    Purdue University, West Lafayette

    Indiana Department of Transportation Division of Research
    West Lafayette, IN  United States  47907
  • Principal Investigators:

    McDaniel, Rebecca

  • Start Date: 20131028
  • Expected Completion Date: 0
  • Actual Completion Date: 0
  • Source Data: RiP Project 37742

Subject/Index Terms

Filing Info

  • Accession Number: 01547230
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-05, Topic
  • Files: TRB, RiP
  • Created Date: Dec 4 2014 1:00AM