INVESTIGATION OF RUTTING IN ASPHALT CONCRETE PAVEMENTS. INTERIM REPORT

Pavement cores were collected from rutting asphalt concrete pavements less than 2 years after last overlay. Tests were performed in an attempt to determine the cause(s) of rutting. Findings revealed common causes such as excessive asphalt, fine-grained aggregate and natural, rounded aggregate particles. A laboratory test program was designed and initiated to quantify the contribution to rutting in asphalt concrete mixtures when increasing amounts of natural (uncrushed) aggregate particles are added. The objective is to generate supporting data and prepare specifications for maximum quantity of certain natural sands, minimum top-size aggregate and minimum voids in mineral aggregate in paving mixtures to be placed on high traffic volume roadways. Results to date have shown that susceptibility to plastic deformation increases dramatically when natural particles replace crushed particles in a given aggregate gradation.

• Supplemental Notes:
  • Research study title: Investigation of Rutting in Asphalt Concrete Pavements.
• Corporate Authors:

  Texas Transportation Institute

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

  Texas State Department of Highways & Public 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:
  • Button, J W
  • Perdomo, D
• Publication Date: 1989-3

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 71 p.

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt concrete; Core samples; Crushed aggregates; Laboratory tests; Mineral aggregates; Pavement performance; Plastic deformation; Ruts (Pavements); Specifications; Void ratios
• Uncontrolled Terms: Aggregate size; Causes; Rut
• Old TRIS Terms: Cores; Uncrushed aggregate; Void
• Subject Areas: Geotechnology; Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials; I36: Aggregates;

Filing Info

• Accession Number: 00491146
• Record Type: Publication
• Report/Paper Numbers: FHWA/TX-89-1121-1, Res Rept 1121-1, TTI: 2-8-87-1121-1
• Contract Numbers: Study 2-8-87-1121
• Files: TRIS, USDOT, STATEDOT
• Created Date: Feb 28 1990 12:00AM