LABORATORY TESTING OF ROCK STRENGTH

NEW EQUIPMENT AND TESTING TECHNIQUES HAVE BEEN DEVELOPED TO INVESTIGATE THE BASIC STRENGTH OF ROCK. THE EFFECT OF VARYING THE INTERMEDIATE PRINCIPAL STRESS ON THE STRENGTH APPEARS APPRECIABLE IN THE CASE OF CRYSTALLINE ROCKS SUCH AS GRANITE. FAILURE OF HOLLOW CYLINDERS OF ROCK UNDER CONDITIONS OF HIGH RATIOS OF THE INTERMEDIATE TO THE MAJOR PRINCIPAL STRESS APPEARS TO BE INITIATED AS A SPALLING FAILURE. ALTHOUGH SIMPLE TESTS FOR THE DETERMINATION OF THE STRENGTH OF INTACT ROCK CAN FURNISH RELIABLE DATA FOR CERTAIN DESIGN SITUATIONS, THE BEHAVIOR OF DISCONTINUOUS ROCK MASSES MUST BE EVALUATED BY MEANS OF SUITABLE MODEL STUDIES AND ANALYTICAL PROCEDURES. WHILE THE RESULTS WILL STILL BE ONLY APPROXIMATIONS OF THE MASS PROPERTIES, THERE ARE DEFINITE BENEFITS IN TERMS OF PLANNING AND INTERPRETING FIELD TESTS. /AUTHOR/

• Supplemental Notes:
  • No 402, pp 207-227, 16 FIG, 1 TAB, 8 REF
• Authors:
  • Mazanti, B B
  • Sowers, G F
• Publication Date: 1965-10

Media Info

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

Subject/Index Terms

• TRT Terms: Failure; Granite; Laboratory tests; Mass; Principal stresses; Rocks; Spalling; Strength of materials
• Uncontrolled Terms: Model tests
• Old TRIS Terms: Principal stress
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00234155
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 5 1994 12:00AM