Effects of Reheating and Mixture Composition on Balanced Mix Design Test Results

Details

• Creators:
  Kuchiishi, Kazuo ; Boz, Ilker
• Corporate Creators:
  Virginia Transportation Research Council (VTRC)
• Corporate Contributors:
  Virginia. Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  APA Asphalt Mixtures Asphalt Pavements Cantabro Chemical Composition IDT-CT IDT-HT Performance Performance Criteria Predictive Control Predictive Equation Production Reheating

  More +
• Publication/ Report Number:
  FHWA/VTRC 26-R42
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Virginia
• Edition:
  Final Report
• Corporate Publisher:
  Virginia Transportation Research Council (VTRC)
• Abstract:
  Since 2019, the Virginia Department of Transportation (VDOT) has conducted several field trials with balanced mix design (BMD) mixtures. In 2024, these efforts culminated with the statewide application of VDOT’s BMD specification to all 9.5-and 12.5-mm surface mixtures with A and D designations in maintenance resurfacing contracts. Several Virginia Transportation Research Council (VTRC) research projects helped address challenges during the specification development and implementation. These projects revealed significant and practical differences in BMD results between lots or samples of the same mixture and across producers and VDOT districts, highlighting the influence of mixture handling practices and component materials on BMD laboratory performance. A better understanding of how factors such as reheating and mixture composition affect BMD test results is essential to ensure consistent asphalt mixture production and robust quality measurement practices. This study’s objective was to quantify the effect of reheating and mixture composition on VDOT’s BMD test results and to identify the volumetrics and gradation parameters that can significantly influence Cantabro, indirect tensile cracking test (IDTCT), Asphalt Pavement Analyzer (APA), and indirect tensile at high temperature (IDT-HT) results. The scope of work included a literature review, statistical analysis of BMD datasets from past VTRC studies and VDOT’s 2024 BMD statewide production, a statewide stakeholder survey to gather insights regarding typical production-level practices for BMD testing, and BMD testing of four plant-produced asphalt mixtures to verify the findings.
• Format:
  PDF
• Funding:
  126581
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:77760665bb23ad775f808b87befab2fc74531ea2902f620b7689d6753c537933063342ee2532d3afdf5018a98a2df682e2b59902a7714a4ae1dc9be72607a2aa
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/91860/dot_91860_DS1.pdf
• File Type:
  [PDF - 4.01 MB ]