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Stone Matrix Asphalt Georgia Department of Transportation [case study]

File Language:
English


Details

  • Corporate Creators:
    United States. Federal Highway Administration
  • Contributors:
    Aschenbrener, Tim ; Tyson, Sam
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA-HIF-22-019
  • Resource Type:
    Brief
  • Geographical Coverage:
    United States;Georgia
  • Corporate Publisher:
    United States. Federal Highway Administration
  • Abstract:
    This is one of five case studies highlighting FHWA’s Every Day Counts initiative known as Targeted Overlay Pavement Solutions (TOPS). The purpose of TOPS is to integrate innovative overlay procedures into practices to improve performance, lessen traffic impacts, and reduce the cost of pavement ownership. Stone matrix asphalt (SMA) has been used in Europe for nearly 60 years due to its rutting resistance and ability to withstand the wearing effect of studded tire use during winter driving conditions.1 It was first introduced to the United States in 1990. The Georgia Department of Transportation (GDOT) was one of the first agencies to place test sections to evaluate SMA’s performance on some of Georgia’s heaviest traveled interstate routes. GDOT was interested in SMA based on reports that it had greater rutting resistance, longer fatigue life, longer service life, and lower annualized costs than conventional mixes.2 However, GDOT had concerns about whether SMA could perform in the southeastern U.S. with its warm climate, and with aggregates that have high abrasion loss as measured using the Los Angeles Abrasion Test (American Association of State Highway and Transportation Officials T 96).
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/62721/dot_62721_DS1.pdf
  • File Type:
    Filetype[PDF - 535.26 KB]
  • Collection(s):
    Federal Highway Administration
  • Main Document Checksum:
    urn:sha-512:11bf501c3421bcb4bc64571d1185494a884ad8157ea526d092067d1265395e9947bb8ebf33e6b1a2a40b9106903cb7155db133568f682331ec22ee56ff949385
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