DETERMINATION OF SUBGRADE MOISTURE CONTENT WITH GYPSUM BLOCKS

THE ELECTRICAL RESISTANCE OF GYPSUM BLOCK IN MOISTURE EQUILIBRIUM WITH SOIL CAN PROVIDE A MEASURE OF THE SOIL MOISTURE SUCTION (THE RECOMMENDED RANGE OF SOIL MOISTURE SUCTION BEING PF3.0-7.0 APPROX - THE PF VALUE IS EXPRESSED AS THE COMMON LOGARITHM OF THE LENGTH OF A SUSPENDED WATER COLUMN WHICH WOULD BE SUPPORTED BY THE SUCTION BEING MEASURED). THE RESISTANCE READINGS OF A BLOCK HAVE TO BE CALIBRATED IN TERMS OF SUCTION VALUES, OR HAVE TO BE CALIBRATED IN TERMS OF MOISTURE CONTENTS OF THE SOIL WHICH IS UNIQUE FOR THE SOIL TYPE AND CONDITION (E.G. DENSITY, STRUCTURE, STRESS HISTORY, ETC.). A HIGH LEVEL OF CONTROL AND ATTENTION TO EXPERIMENTAL DETAIL IS NECESSARY IN THE FIELD FOR THE GYPSUM BLOCK METHOD TO BE SUCCESSFUL. /AUTHOR/

  • Supplemental Notes:
    • No 25, pp 2-9
  • Publication Date: 0

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  • Accession Number: 00229764
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 25 1970 12:00AM