EVALUATION OF THE STIFFNESS OF INDIVIDUAL LAYERS IN A SPECIALLY DESIGNED PAVEMENT FACILITY FROM SURFACE DEFLECTIONS

AN ASSESSMENT WAS MADE OF THE LANE-WELLS DYNAFLECT AS A NONDESTRUCTIVE MEANS FOR ESTIMATING THE RELATIVE STIFFNESS OF INDIVIDUAL LAYERS IN A FLEXIBLE PAVEMENT. THE TESTING EMPLOYED WAS PERFORMED ON A STATISTICALLY DESIGNED GROUP OF EXPERIMENTAL PAVEMENT SECTIONS RECENTLY CONSTRUCTED AT TEXAS A & M UNIVERSITY. THE FACILITY IS DESCRIBED, DYNAFLECT DATA ARE PRESENTED, THE DEVELOPMENT OF A MATHEMATICAL MODEL FROM ELASTICITY THEORY IS DESCRIBED AND ANALYSIS TECHNIQUES DISCUSSED. RESULTS ARE PRESENTED OF LABORATORY AND FIELD MEASUREMENTS OF THE VELOCITY OF COMPRESSIONAL WAVES THROUGH THE MATERIALS USED IN THE PAVEMENT TEST FACILITY. A LEAST- SQUARES REGRESSION TECHNIQUE THAT RECOGNIZES THE EXISTENCE OF ERRORS OF MEASUREMENT IN ALL VARIABLES IS PRESENTED.

• Supplemental Notes:
  • Res Rept No 32-8, 73 PP, 20 FIG, 8 TAB, 11 REF, 2 APP
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011
• Authors:
  • Scrivner, F H
  • Moore, W M
• Publication Date: 1966-6

Subject/Index Terms

• TRT Terms: Elasticity (Mechanics); Errors; Evaluation; Fault location; Field tests; Flexible pavements; Least squares method; Mathematical models; Measuring instruments; Nondestructive tests; Pavement layers; Regression analysis; Stiffness; Test sections; Velocity; Wave motion
• Uncontrolled Terms: Field measurements
• Old TRIS Terms: Elastic theory
• Subject Areas: Data and Information Technology; Highways; Pavements;

Filing Info

• Accession Number: 00206633
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 14 1994 12:00AM