Development of Volumetric Acceptance and Percent Within Limits (PWL) and Criteria for Stone Metrix Asphalt (SMA) Mixtures in Indiana

Details

• Creators:
  Lee, Jusang ; Haddock, John E. ; Jeon, Jongmyung
• Corporate Creators:
  Purdue University. Joint Transportation Research Program
• Corporate Contributors:
  Indiana Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Mix design
  • Pavement performance
  • Specifications
  • Stone matrix asphalt
  • Pay
  • Adjustment factors
  • Quality assurance
  • Quality control percent within limits (PWL)
  • pay factor
• Publication/ Report Number:
  FHWA/IN/JTRP-2022/29
• DOI:
  https://doi.org/10.5703/1288284317580
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  Purdue University. Joint Transportation Research Program
• Abstract:
  SMA is designed based on SMA volumetric properties in terms of air voids content (Va), voids in the mineral aggregate(VMA), and adequate stone-on-stone contact. For construction quality assurance (QA) purposes, INDOT currently accepts SMAs based on aggregate gradation and asphalt binder content. Thus, there is a discrepancy between SMA design criteria and construction acceptance. To better align design and construction, it is necessary to consider SMA volumetric properties in the use of QA. For HMA mixtures, INDOT has already transitioned from volumetric QA acceptance procedures to PWL. Today, SMA still uses adjustment points, which are not based on robust statistics, for QA acceptance.
• Format:
  PDF
• Funding:
  SPR-4325
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/67009/dot_67009_DS1.pdf
• File Type:
  [PDF - 3.51 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:0ed0d0f0c1e773a160158b8aa00059ce020fc9d8830215a37b0241581dcbd43ad87be35316102c895799f83fc2229ebdd51b85d1cd30b1fe29bdfe968e1e0d96