FATIGUE AND DEFLECTION OF ASPHALTIC CONCRETE

FATIGUE AND DEFLECTION PROPERTIES OF ASPHALTIC CONCRETE WERE STUDIED FOR THE PURPOSE OF EVALUATING PAVEMENT CHARACTERISTICS AND DESIGN CRITERIA. DEFLECTION TESTS USING A BENKELMAN BEAM AND TRUCK LOADED TO 18,000 LB ON A SINGLE REAR AXLE WERE MADE IN THE FIELD. STATIC MEASUREMENTS WERE MADE AT 2 POINTS 50 FT APART IN EACH WHEEL TRACK FOR EACH AREA OF TEST. THREE BEAMS, 4 IN WIDE BY 28 IN LONG, WERE CUT FROM EACH OF THE PROJECTS MEASURED FOR DEFLECTION UNDER LOAD . TWO OF EACH SET OF BEAMS WERE TESTED IN THE LABORATORY FOR FATIGUE OF REPEATED FLEXURE. THE THIRD BEAM WAS TESTED TO DETERMINE THE COEFFICIENT OF THERMAL EXPANSION AND BEAM STRENGTH AT MINUS 10 DEGREES F. RECLAIMED ASPHALT TESTS, AND TESTS TO DETERMINE ASPHALT CONTENT, VOID CONTENT, AND GRADATION WERE PERFORMED ON SAMPLES CUT FROM THE FLEXED AND BROKEN BEAMS. TESTS TO DETERMINE FATIGUE OF DEFLECTION AT TWO CONSTANT DEFLECTION AMOUNTS, VOID CONTENT, LINEAR COEFFICIENT OF THERMAL EXPANSION, MODULUS OF RUPTURE AT MINUS 10 DEGREES F, AND TESTS ON RECLAIMED ASPHALT WERE PERFORMED USING 75 SETS OF SPECIMENS MADE IN THE LABORATORY.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1966/131/131-008.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Flexible Pavement Design and presented at the 45th Annual Meeting Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved. .
• Authors:
  • White, O A
• Publication Date: 1966

Media Info

• Media Type: Print
• Features: Figures; Tables;
• Pagination: pp 154-159
• Monograph Title: Design, Performance and Surface Properties of Pavements
• Serial:
  • Highway Research Record
  • Issue Number: 131
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt concrete; Asphalt content; Beams; Benkelman beam; Deflection; Deflection tests; Design; Evaluation; Fatigue (Physiological condition); Field tests; Flexure; Laboratory tests; Load tests; Modulus of rupture; Pavement performance; Pavements; Specimens; Thermal expansion; Trucks; Void ratios
• Uncontrolled Terms: Design criteria
• Old TRIS Terms: Void; Wheel path
• Subject Areas: Design; Highways; Motor Carriers; Pavements;

Filing Info

• Accession Number: 00206243
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Nov 7 1994 12:00AM