LOAD EQUIVALENCY FACTORS FOR ASPHALT PAVEMENTS (WITH DISCUSSION)

In this paper Load Equivalency Factors (LEF) for asphalt pavements with granular base as well as for full depth asphalt pavements are presented. These LEF's are developed for the overload permitting study and are based on equal total permanent (plastic) deformation (TPD) at the pavement surface. A three-dimensional dynamic finite element model (3D-DFEM) was used to analyze flexible pavements. This 3D-DFEM has the capability to simulate truck loads moving at different speeds. Also, it can model paving materials realistically as elastic, elastic-plastic, viscoelastic and plastic materials. The 3D-DFEM predicts both the elastic and plastic pavement response for one or more load applications. The 3D-DFEM was verified in two steps; first for static, linear elastic analysis and then for dynamic, non-linear anlysis.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02702932
• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Zaghloul, S
  • White, T D
• Conference:
  • Asphalt Paving Technology 1994
  • Location: St. Louis, Missouri
  • Date: 1994-3-21 to 1994-3-23
• Publication Date: 1994-3

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 481-510
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Volume: 63
  • Publisher: Association of Asphalt Paving Technologists (AAPT)
  • ISSN: 0270-2932
  • Serial URL: https://www.asphalttechnology.org/site_page.cfm?pk_association_webpage_menu=9169&pk_association_webpage=19109

Subject/Index Terms

• TRT Terms: Analysis; Asphalt pavements; Elastic deformation; Finite element method; Flexible pavements; Full-depth asphalt pavements; Granular bases; Load limits; Loads; Mathematical models; Nonlinear systems; Oversize loads; Pavement performance; Plastic deformation; Traffic equivalence factor; Trucks
• Uncontrolled Terms: Linear; Overloads
• Old TRIS Terms: Finite elements
• Subject Areas: Highways; Materials; Motor Carriers; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00728520
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 25 1996 12:00AM