AN EXAMINATION OF EXPANSIVE CLAY PROBLEMS IN TEXAS

THE ECONOMIC LOSS DUE TO INCREASED AND MORE FREQUENT MAINTENANCE OF THE PAVEMENT OR STRUCTURE WHICH IS MADE NECESSARY BY THE HEAVING OF UNDERLYING SOILS IS DESCRIBED. THE FOLLOWING FACTORS THAT AFFECT A SOIL'S POTENTIAL OR CAPACITY TO SWELL ARE CONSIDERED: MOISTURE MOVEMENT IN THE SOIL; SOIL PROPERTIES SUCH AS PERMEABILITY, DENSITY, SUCTION, MOISTURE, AND ATTEBERG LIMITS; ENVIRONMENTAL CONDITIONS SUCH AS CLIMATE, RAINFALL, TEMPERATURE, HUMIDITY, EVAPORATION, SURFACE COVER, ABNORMAL LOCAL SOURCES OF MOISTURE, AND VEGETATION; GEOLOGICAL ASPECTS SUCH AS CLAY TYPE, CLAY MINERALOGY, PARENT MATERIAL, FOLDS IN GEOLOGIC STRUCTURE, AND THICKNESS OF CALY DEPOSIT. VARIOUS REMEDIAL TECHNIQUES CURRENTLY BEING ATTEMPTED ARE DISCUSSED ALONG WITH THEIR COST EFFECTIVENESS, TYPICAL USAGE, PRACTICALITY, AND EFFECTIVENESS IN PREVENTING SWELLING. A FIELD TEST CURRENTLY IN PROGRESS IS DESCRIBED; ITS PURPOSE IS TO STUDY THE MOISTURE- RELATIONSHIPS IN AN EXPANSIVE CLAY HIGHWAY SUBGRADE BY OBSERVING MOISTURE VARIATIONS AND VOLUME CHANGES WITH RESPECT TO DEPTH. A DESCRIPTION OF THE MEASURING EQUIPMENT, ALL DATA COLLECTED TO DATE, AND A PLAN FOR THE CONSTRUCTION OF THE STUDY ARE INCLUDED. /AUTHOR/

  • Corporate Authors:

    University of Texas, Austin

    Cockrell Hall
    Austin, TX  United States  78712

    Texas State Department of Highways & Public Transp

    11th and Brazos Streets
    Austin, TX  United States  78701

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Wise, J R
    • Hudson, W R
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00233739
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: 118-5
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Aug 8 1977 12:00AM