IMPROVED ACP MIXTURE DESIGN: DEVELOPMENT AND VERIFICATION. FINAL REPORT

This report describes the testing methodologies and evaluation procedures and criteria for the evaluation of uniaxial compressive creep data to determine the susceptibility of asphalt concrete mixtures to permanently deform or rut. The methodology described and the supporting figures and tables allow the user to perform uniaxial creep testing in accordance with the procedure explained in the Asphalt Aggregate Mixture Analysis System (AAMAS) under a stress state that realistically duplicates the in situ condition for the specific pavement and traffic condition to which the asphalt mixture will be subjected. Furthermore, the procedure provides creep strain, creep curve slope and creep stiffness criteria by which to evaluate the potential of the mixture to deform in specific conditions of pavement structure and traffic. The procedure was developed with the intent of integration into the AAMAS procedure. The report explains the use of a method to analyze triaxial shear test data in order to determine the susceptibility of asphalt concrete mixtures to deform under specific conditions of loading and in specific pavement structural situations. This procedure is based on the evaluation of the ratio of induced octahedral shear stress to the octahedral shear strength of the asphalt concrete under the specific conditions of stress actually induced in the pavement structure.

• Supplemental Notes:
  • Research study title: Improved ACP Mixture Design: Development and Verification.
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011

  Texas Department of Transportation

  Transportation Planning Division, P.O. Box 5051
  Austin, TX  United States  78763

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Little, D N
  • Youssef, H
• Publication Date: 1992-3

Language

• English

Media Info

• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 344 p.

Subject/Index Terms

• TRT Terms: Asphalt concrete; Compression; Creep; Creep tests; Deformation; Mix design; Ruts (Pavements); Shear strength; Shear stress
• Uncontrolled Terms: Uniaxial compression
• Old TRIS Terms: Shear stresses; Triaxial shear
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00625535
• Record Type: Publication
• Report/Paper Numbers: FHWA/TX-92/1170-1F, Res Rept 1170-1F, TTI: 2-9-88-1170-1F
• Contract Numbers: Study 2-9-88-1170-1F
• Files: TRIS, USDOT, STATEDOT
• Created Date: Dec 16 1993 12:00AM