THE EFFECTS OF AGE AND MOISTURE REGIME ON THE RESPONSE OF BRIQUETTED ACOUSTIC GAUGES

In-situ measurement of concrete strains with acoustic gauges often requires that the gauges are encapsulated or 'briquetted' for protection. The effects of age and moisture regime on the response of the briquetted gauge are, however, unknown. Studies extending up to 700 days on these two effects are presented and gauge response is compared to that of the unbriquetted gauge. It is shown that both age and the moisture condition of the briquetted gauge influence its response. By choosing a datum, relevant to their environment and related to some time after the peak of hydration temperature is reached, the response of the briquetted gauge can be made to be close to that of the unbriquetted gauge. Tests show that if this is done the stability and dependability of the briquetted acoustic gauge can be relied upon. (A) /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00392103
• Corporate Authors:

  British Society for Strain Measurements

  281 Heaton Road
  Newcastle-Upon-Tyne, NE6 5QB,   England 
• Authors:
  • Potter, MMA
  • Swamy, R N
• Publication Date: 1976-4

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 68-73
• Serial:
  • Strain
  • Volume: 12
  • Issue Number: 2
  • Publisher: British Society for Strain Measurements
  • ISSN: 0039-2103

Subject/Index Terms

• TRT Terms: Acoustics; Age; Concrete; Field tests; Foreign; Governments; Measurement; Measuring instruments; Mechanical stability; Moisture content; Strain gages; Temperature; Test procedures; Tests
• Uncontrolled Terms: Modifications
• Old TRIS Terms: Insitu methods
• ITRD Terms: 1757: Age; 9048: Modification; 5920: Moisture content; 5562: Strain gauge; 6255: Test; 6288: Test method
• Subject Areas: Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00138910
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Oct 26 1976 12:00AM