BUILDING A TONOMETER INTENDED FOR MEASURING THE ACTIVITY OF WATER IN CLAYEY PASTES

A DIFFERENTIAL TONOMETER INTENDED FOR MEASURING THE ACTIVITY OF WATER IN CLAYEY PASTES IS DESCRIBED. THE DETECTION DEVICE IS MADE UP OF THE THERMOCOUPLE DESIGNED BY RICHARDS AND OGATA. A SILVER RING IS SUSPENDED ON A CONSTANTAN AND CHROMEL-PLATINUM WIRE. THE EVAPORATION OF A DROP OF WATER SUSPENDED ON THE RING IS A FUNCTION OF THE VAPOUR TENSION IN THE CENTRE WHERE THE THERMOCOUPLE IS INSERTED. THE ENDOTHERMIC EFFECT PROVIDES A MEASURE OF THE ACTIVITY OF THE SOLVENT. THE RANGE OF APPLICATION OF THE INSTRUMENT IS DEMONSTRATED BY MEANS OF SEVERAL EXAMPLES. /LCPC/A/RRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00375225
• Supplemental Notes:
  • Vol30, No8, PP451-456, 6FIG, 1PHOT, 2REF
• Authors:
  • Fripiat, J J
  • Delfosse, J M
  • Bouxain, J
• Publication Date: 0

Media Info

• Serial:
  • Silicate Industriels
  • Publisher: ASBL Silicates Industriels
  • ISSN: 0037-5225

Subject/Index Terms

• TRT Terms: Activation (Chemistry); Clay; Construction; Measurement; Measuring instruments; Pastes; Solvents; Tension; Thermocouples; Vapors; Water; Wire
• Old TRIS Terms: Activation; Rings; Tonometer
• Subject Areas: Construction; Geotechnology; Highways;

Filing Info

• Accession Number: 00228713
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Jun 1 1994 12:00AM