CRAWFORD-SOUTH EXPERIMENTAL PROJECT, SO125/9/

RESULTS OF 2-YEARS OF OBSERVATIONS ON A LIGHTLY TRAVELLED (100 ADT) EXPERIMENTAL FLEXIBLE PAVEMENT ARE REPORTED. LIME- STABILIZED ROADBED SOIL FOR USE AS SUBBASE IS THE PRINCIPAL INDEPENDENT VARIABLE UNDER STUDY. TWO LEVELS OF BASE THICKNESS, AND 4 LEVELS OF LIME-STABILIZED SUBBASE THICKNESS AND SEVERAL SOIL TYPES ARE INCLUDED. CONDITION SURVEYS, AND RUT DEPTH, BENKELMAN BEAMS, DEHLEN CURVATURE METER AND CHLOE MEASUREMENTS ARE MADE QUARTERLY. FINDINGS TO DATE ARE AS FOLLOWS: (1) EFFECT OF LIME STABILIZATION ON PAVEMENT PERFORMANCE HAS NOT BEEN INDICATED (2) THERE HAS BEEN NO RUTTING (3) CRACKING, PRINCIPALLY LONGITUDINAL, IS RELATED TO SUBSIDENCE AND NOT TO TRAFFIC (4) AVERAGE DEFLECTION RANGE FROM ABOUT 25 TO 65 (5) THE SECTIONS WITH LIME DEFLECT LESS THAN THOSE WITHOUT LIME. /BPR/

  • Supplemental Notes:
    • Hpr-1/5/, BPR-4, STATE-1475
  • Corporate Authors:

    Colorado Department of Highways

    Planning and Research Division, 4201 East Arkansas Avenue
    Denver, CO  USA  80222

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Publication Date: 1967-12

Subject/Index Terms

Filing Info

  • Accession Number: 00206324
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Apr 2 1994 12:00AM