AN EMPIRICAL EQUATION FOR PREDICTING PAVEMENT DEFLECTIONS

THE EMPIRICAL EQUATION IS DOCUMENTED FOR PREDICTING PAVEMENT DEFLECTIONS. THE EQUATION PREDICTS THE DEFLECTIONS MEASURED BY THE DYNAFLECT, GIVEN CERTAIN DESIGN PARAMETERS FOR THE PAVEMENT. THE EQUATION WAS DERIVED IN TWO STEPS: (1) A MATHEMATICAL MODEL OF THE DEFLECTION PHENONMENON, CONTAINING CERTAIN UNDETERMINED COEFFICIENTS, WAS DEVELOPED, AND (2) THE COEFFICIENTS WERE EVALUATED BY FITTING THE MODEL TO DYNAFLECT DEFLECTION DATA GATHERED ON A SET OF SPECIAL TEST SECTIONS CONSTRUCTED IN ACCORDANCE WITH STATISTICAL PRINCIPLES OF EXPERIMENT DESIGN. THE MODEL IS PRESENTED AND DESCRIPTION IS GIVEN OF HOW THE COEFFICIENTS WERE EVALUATED. THE PREDICTION ERRORS ASSOCIATED WITH THE EQUATION ARE DISCUSSED. IT IS SHOWN HOW THE MODEL CAN BE USED TO ESTIMATE STIFFNESS COEFFICIENTS IN SIMPLE PAVEMENT STRUCTURES.

• Supplemental Notes:
  • Res Rept No 32-12, 42 PP, 9 FIG, 5 TAB, 4 REF, 1 APP
• 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 Transp

  11th and Brazos Streets
  Austin, TX  United States  78701
• Authors:
  • Scrivner, F H
  • Moore, W M
• Publication Date: 1968-10

Subject/Index Terms

• TRT Terms: Deflection; Deflectometers; Equations; Forecasting; Mathematical models; Pavement design; Pavements; Stiffness
• Old TRIS Terms: Empirical equations; Pavement deflection
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00207028
• Record Type: Publication
• Files: TRIS, ATRI, STATEDOT
• Created Date: Aug 4 1994 12:00AM