Performance of Stone Matrix Asphalt (SMA) Mixtures in the United States

Details

• Creators:
  Brown, E. Ray ; Mallick, Rajib B. ; Haddock, John E. ; Bukowski, John
• Subject/TRT Terms:
  • Pavement performance
  • Coarse aggregates
  • Void ratios
  • Asphalt content
  • Air voids
  • Fat spots
  • Los Angeles abrasion criteria
  • Stone Matrix Asphalt (SMA)
  • Voids in mineral aggregate (VMA)
• Publication/ Report Number:
  Report No: NCAT Report No. 97-1
• Resource Type:
  Research Paper
• Geographical Coverage:
  United States
• Corporate Publisher:
  National Center for Asphalt Technology (U.S.)
• Abstract:
  Stone Matrix Asphalt (SMA) mixtures have been used in the United States since 1991. The traffic rate has been high on many of these pavements resulting in a significant amount of traffic during a short period of time. In 1994 the Federal Highway Administration awarded a contract to the National Center for Asphalt Technology (NCAT) to determine the performance of SMA pavements. This report provides a summary of mix design and performance data obtained from 86 SMA projects. Data were collected on material and mixture properties, and performance was evaluated on the basis of several factors including rutting, cracking, raveling, and fat spots. This report provides a summary of the results obtained from the national study. Based on the findings in the study, SMA mixtures should continue to provide good performance in high volume traffic areas with the extra cost for construction more than offset by the increased performance. Figures, tables, photos, references. 32p.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/13985/dot_13985_DS1.pdf
• File Type:
  [PDF - 1.59 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:a52567f98a19544d55d1bd01c1acd4d86e863dad5b51e3dbbfefa191978573b0720e6cadc2db7d6ae96eba982d9a2ac12a22a214626479cfeff5398d516b09d8