SUBGRADE MOISTURE VARIATIONS - EFFECTIVENESS OF EXISTING HIGHWAY DESIGNS

OKLAHOMA HIGHWAY DESIGNS WERE EXAMINED TO DETERMINE WHICH ONES GIVE ACCEPTABLE PERFORMANCE AND WHY/HOW THEY RESIST THE EFFECTS OF SUBGRADE MOISTURE VARIATIONS. REVIEW OF FACTORS PERTINENT TO EVALUATING BOTH PAVEMENT PERFORMANCE AND SUBGRADE MOISTURE CONDITIONS WAS FOLLOWED BY A STUDY OF DESIGNS AT 50 FIELD RESEARCH SITES TO DETERMINE THE RELATIONS BETWEEN DESIGN PERFORMANCE AND OBSERVED SUBGRADE MOISTURE CONDITIONS. THE TYPE OF WEARING SURFACE PROVED TO HAVE LITTLE EFFECT ON EITHER PAVEMENT PERFORMANCE OR SUBGRADE MOISTURE CONDITIONS, WITH UNDERLYING COMPONENTS BEING RESPONSIBLE FOR BOTH. IN GENERAL, THE BEST PERFORMANCE WAS OBTAINED FROM DESIGNS INCORPORATING IMPROVED SHOULDERS; FLEXIBLE, IMPERVIOUS, OR SEMI-PERVIOUS BASE MATERIALS, CONTINUOUS UNDER PAVEMENT AND SHOULDER; SUBBASES; AND ADEQUATE DRAINAGE. /AUTHOR/

• Supplemental Notes:
  • Int Rpt 9, 59 PP, 22 FIG, 8 REF, 1 APP
• Corporate Authors:

  Oklahoma State University, Stillwater

  Department of Civil Engineering
  Stillwater, OK  United States  74074
• Authors:
  • Snethen, D R
  • Haliburton, T A
• Publication Date: 1970-5

Subject/Index Terms

• TRT Terms: Clay; Clay soils; Moisture content; Pavement design; Pavement performance; Pavements; Soil water; Subgrade (Pavements); Swelling soils
• Old TRIS Terms: Subgrade moisture
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00207223
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 8 1971 12:00AM