RELATIONSHIPS BETWEEN SOME PHYSICAL PROPERTIES OF ROCK DETERMINED BY LABORATORY TESTS

THIS REPORT IS CONCERNED WITH A STATISTICAL SURVEY OF THE RESULTS OBTAINED FROM TESTS ON SAMPLES OF ROCK DURING A 5-YR PERIOD FROM 1965-1970. THE SURVEY WAS MADE TO DETERMINE WHETHER THERE WERE ANY STATISTICALLY SIGNIFICANT RELATIONSHIPS BETWEEN THE VARIOUS PROPERTIES INVESTIGATED. GOOD CORRELATIONS WERE FOUND BETWEEN THE STRAIGHTFORWARD MECHANICAL PROPERTIES, I.E. STRENGTH AND HARDNESS, AND IT WAS PROVEN THAT IT IS POSSIBLE, WITHIN REASONABLE LIMITS, TO MAKE AN ASSESSMENT OF THE PROPERTIES OF A ROCK BY ESTIMATION FROM ANY OF THE SIMPLE "STANDARD" TESTS. HOWEVER, THE CORRELATIONS WERE GENERALLY NOT AS GOOD BETWEEN THE MECHANICAL AND ENERGY PROPERTIES, WHICH SUGGESTS THAT THE "CUTTABILITY" OF ROCK SHOULD BE CONSIDERED AS AN INDEPENDENT PROPERTY AND ESTABLISHED SEPARATELY BY TESTS. FORMULAE AND NOMOGRAMS ARE PROVIDED FROM WHICH THE INDIVIDUAL PROPERTIES CONSIDERED IN THE ANALYSES CAN BE ESTIMATED FROM ANY OTHER PROPERTY. DETAILS OF THE LIMITATIONS AND ERRORS INVOLVED IN THE ANALYSES ARE ALSO GIVEN. THE NCB CONE INDENTER WAS SHOWN TO BE A GOOD FIELD INSTRUMENT GIVING RESULTS WHICH CAN BE CORRELATED WITH THE OTHER PROPERTIES; IT COULD BE USED FOR MAKING RAPID ASSESSMENTS OF THE ROCK ENCOUNTERED IN SITE SURVEYS. FOR THE PURPOSES FOR WHICH THESE TESTS WERE ESTABLISHED WITHIN THE NCB IT IS CONSIDERED UNNECESSARY TO MEASURE PROPERTIES OTHER THAN COMPRESSIVE STRENGTH AND SPECIFIC ENERGY. /AUTHOR/

  • Availability:
  • Corporate Authors:

    Pergamon Press, Incorporated

    Headington Hill Hall
    Oxford OX30BW,   England 
  • Authors:
    • Szlavin, J
  • Publication Date: 1974-2

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Filing Info

  • Accession Number: 00263414
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 13 1974 12:00AM