STUDY OF A CAPACITIVE CELL APPARATUS FOR THE NON-DESTRUCTIVE MEASUREMENT OF THE SOIL MOISTURE CONTENT

ETUDE D'UNE CELLULE CAPACITIVE DE MESURE DES TENEURS EN EAU DANS LES SOLS PAR UNE METHODE NON DESTRUCTIVE

The author describes a special study of a non-destructive nuclear capacitive method of measuring the moisture content of soils, which is based on the dielectic properties of wet materials. Details are given of a capacitive cell which is designed to remain in the soil permanently and is connected to a measuring apparatus by means of a cable. The principle of the measurement consists in measuring variations in the resonance frequency of a transistorized high-frequency oscillator as a function of the changes in capacity between two electrodes buried in the ground when the moisture content varies. A theoretical study is presented of the high-frequency oscillator designed. Details are also given of the measuring capacitive cell and of laboratory and in-situ results. Possible applications of the apparatus are mentioned. /TRRL/

  • Corporate Authors:

    Conservatoire National des Arts et Metiers

    Paris,   France 
  • Authors:
    • Robert, A
  • Publication Date: 1972

Language

  • French

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 105 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00125482
  • Record Type: Publication
  • Source Agency: Central and Regional Labs of Bridges & Highways,Fr
  • Report/Paper Numbers: Thesis
  • Files: ITRD, TRIS
  • Created Date: Apr 7 1976 12:00AM