CONSTRUCTION OF THE WHITEWATER EXPERIMENTAL PROJECT

THE CONSTRUCTION, INSTRUMENTATION, AND INITIAL DATA EVALUATION ARE DESCRIBED OF A SMALL EXPERIMENTAL PROJECT FIVE MILES SOUTH OF GRAND JUNCTION. THE PURPOSE OF THIS RESEARCH PROJECT IS TO ATTEMPT TO DETERMINE THE SOURCE AND CONDITIONS FOR DEVELOPMENT OF MOISTURE WHICH COLLECTS ON THE TOP OF SUBGRADES COVERED BY OPEN-GRADED SUBBASE MATERIAL. TWO TEST SECTIONS WERE SET UP IN THE SPRING OF 1968 IN A SHALE CUT. EACH HAD A 24-INCH DEEP OPEN-GRADED GRANULAR SUBBASE AND A 3 1/4 INCH ASPHALT SURFACE MAT. IN THE TEST SECTION, A PLASTIC MEMBRANE WAS USED TO PROTECT THE SUBGRADE FROM MOISTURE GENERATED IN THE SUBBASE. IN THE CONTROL SECTION, NO PROTECTIVE MEMBRANE WAS PROVIDED. FOR THE FIRST SIX MONTHS, IT APPEARED THAT THE PLASTIC MEMBRANE BETWEEN THE SUBBASE AND THE SUBGRADE PREVENTED A MOISTURE GAIN IN THE SUBGRADE, BUT AFTER THE SPRING THAW THE MOISTURE IN THE SUBGRADE OF THE TEST SECTION CLOSELY APPROXIMATED THE MOISTURE IN THE SUBGRADE OF THE CONTROL SECTION. /AUTHOR/

  • Supplemental Notes:
    • Hpr, 1471
  • Corporate Authors:

    Colorado Department of Highways

    4201 East Arkansas Avenue
    Denver, CO  USA  80222

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Publication Date: 1969-5

Subject/Index Terms

Filing Info

  • Accession Number: 00214502
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Jan 5 1970 12:00AM