Development of a 4.75mm (No. 4) NAMS Mixture

The objective of this research is to develop mix designs criteria for 4.75mm Nomial Maximum Aggregate Size (NMAS) mixtures in high and low traffic volume roads. Criteria targeted in the research will be gradation controls, volumetric property requirements (air voids, VMA, VFA, and dust-to-binder ratio) and mechanical tests. The mechanical tests include the Loaded Wheel Track (LWT) test, Semi-Circular Bend (SCB) test, Dynamic Modulus, and friction testing. Local aggregates and asphalt cements will be evaluated to determine the most economical mix. The primary aggregate types that will be examined are gravel and limestone because of their prevalence in Louisiana. Asphalt binder grades tested will follow Louisiana Standard Specifications which include, PG 64-22, PG 76-22, and PG 82-22crm.

Language

• English

Project

• Status: Active
• Funding: $140674
• Contract Numbers:

  17-4B

  1000195

• Sponsor Organizations:

  Federal Highway Administration

  5304 Flanders Drive, Suite A
  Baton Rouge, LA  United States  70808
• Managing Organizations:

  Louisiana Department of Transportation

  P.O. Box 94245
  1201 Capitol Access Road
  Baton Rouge, LA  United States  70804-9245

  Louisiana Transportation Research Center

  4101 Gourrier Avenue
  Baton Rouge, LA  United States  70808
• Project Managers:

  Cooper, Samuel

• Performing Organizations:

  Louisiana Transportation Research Center

  4101 Gourrier Avenue
  Baton Rouge, LA  United States  70808
• Principal Investigators:

  Salari, Saman

  Mata, David

• Start Date: 20170614
• Expected Completion Date: 20221031
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Aggregates; Air voids; Asphalt cement; Asphalt mixtures; Bituminous binders; Dynamic modulus of elasticity; Mix design
• Geographic Terms: Louisiana
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01638260
• Record Type: Research project
• Source Agency: Louisiana Transportation Research Center
• Contract Numbers: 17-4B, 1000195
• Files: RIP, STATEDOT
• Created Date: Jun 21 2017 11:59AM