EQUIPMENT FOR MEASURING PORE PRESSURE IN ROCK SPECIMENS UNDER TRIAXIAL LOAD

THIS PAPER DEALS WITH EQUIPMENT DEVELOPMENT, PROCEDURAL DETAILS, AND PILOT TESTS OF LARGER SPECIMENS OF INTERMEDIATE-QUALITY ROCK, AND ROCK CONTAINING JOINT SYSTEMS AND WEAKNESS PLANES. THE EFFECT OF PORE-PRESSURE BUILDUP DURING LOADING AND ITS GRAPHICAL REPRESENTATION, THAT IS, THE VECTOR CURVE AS EMPLOYED IN SOIL MECHANICS, IS CONSIDERED. WORK TO DATA INDICATES THAT IN AN UNDRAINED TRIAXIAL TEST THE PORE PRESSURE RISES TO PEAK VALUE AT YIELDING OF THE SPECIMEN AND THEN FALLS OFF TO SOME LOWER VALUE AT FAILURE. PEAK VALUES AND FINAL VALUES VARY WIDELY FOR DIFFERENT ROCK TYPES. THE VECTOR CURVE DEPICTS QUITE CLEARLY THE RESULTS OF THE UNDRAINED TRIAXIAL TEST. /AUTHOR/

• Supplemental Notes:
  • No 402, pp 3-17, 8 FIG, 13 REF
• Authors:
  • Neff, T L
• Publication Date: 1965-10

Media Info

• Serial:
  • Am Soc Testing & Matls Spec Tech Publ

Subject/Index Terms

• TRT Terms: Alternatives analysis; Development; Loads; Measurement; Measuring instruments; Pore pressure; Pressure; Rock jointing; Rocks; Triaxial shear tests; Yield point
• Uncontrolled Terms: Triaxial loads
• Old TRIS Terms: Jointing of rock
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00234141
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 30 1994 12:00AM