FATIGUE BEHAVIOR OF A LIME-FLY-ASH-AGGREGATE MIXTURE

THE USE OF LIME-FLY ASH-AGGREGATE MIXTURES FOR HIGHWAY BASE COURSES IS A RELATIVELY RECENT APPLICATION TO THE EXPANDING HIGHWAY PROGRAM. RATIONAL METHODS OF ANALYSIS FOR THE BEHAVIOR AND DESIGN OF PAVEMENTS BUILT WITH LIME-FLY ASH-AGGREGATE BASE COURSES ARE EXTREMELY LIMITED. AS A PRELUDE TO THE DEVELOPMENT OF SOUND RATIONAL METHODS, IT IS NECESSARY TO UNDERSTAND THE BEHAVIOR OF THE MATERIAL WHEN IT IS SUBJECTED TO REPEATED LOADING. THIS PAPER REPORTS ON THE FATIGUE BEHAVIOR OF A LIME-FLY ASH-AGGREGATE MIXTURE. SPECIMENS, 6- BY 6- BY 38-IN., WERE TESTED AFTER A 28-DAY CURING PERIOD BY SUBJECTING THEM TO CONSTANT, REPEATED FLEXURAL LOADS. THE RELATIONSHIP BETWEEN THE CYCLES REQUIRED TO PRODUCE FAILURE AND THE RATIO OF THE APPLIED STRESS TO THE STATIC STRENGTH IS SHOWN. REPEATED FLEXURAL LOADS APPLIED TO THE SPECIMENS TESTED CAUSED THE MATERIAL TO FRACTURE AS A RIGID-TYPE STRUCTURE AT STRESS LEVELS CONSIDERABLY BELOW THE STATIC STRENGTH OF THE SPECIMENS. THE TEST RESULTS INDICATE THAT THE CONCEPT OF FATIGUE SHOULD BE CONSIDERED IN THE DEVELOPMENT OF A RATIONAL METHOD OF ANALYSIS FOR THE BEHAVIOR AND DESIGN OF PAVEMENTS IN WHICH LIME-FLY ASH-AGGREGATE MIXTURES ARE USED. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/335/335-001.pdf
• Supplemental Notes:
  • 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:
  • Ahlberg, Harold L
  • McVinnie, William W
• Conference:
  • 41st Annual Meeting of the Highway Research Board
  • Location: Washington DC, United States
  • Date: 1962-1-8 to 1962-1-12
• Publication Date: 1962

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1-10
• Monograph Title: Lime stabilization: mix, design, properties, and process 1962
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 335
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Accelerated tests; Aggregate mixtures; Base course (Pavements); Fatigue (Mechanics); Flexural strength; Fracture mechanics; Highways; Lime fly ash; Pavement design; Repeated loads; Specimens
• Uncontrolled Terms: Fatigue life; Fracture
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00217595
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Aug 5 1994 12:00AM