Extensive efforts have been devoted to derive rock mechanical properties from the Schmidt hammer rebound index (R) performed on core samples. From R measurements, the uniaxial compressive strength of rock (rc) can be calculated by means of several mathematical expressions, as reported in Table 1. In this respect, R can be considered as a rapid and cheap indirect measure of compressive strength, but it often shows a large scatter due to the uncertainties pertaining the testing technique, the inherent variability of rock properties, and the transformation model from R to rc. In this paper, the authors propose a new empirical relationship between rc and R measurements, based on the statistical percentile method applied to sedimentary carbonate rocks whose uniaxial resistance falls within the range of feasibility of the Schmidt hammer test.
Statistical Method for Assessing the Uniaxial Compressive strength of Carbonate Rock by Schmidt Hammer Tests Performed on Core Samples
VESSIA, Giovanna;
2013-01-01
Abstract
Extensive efforts have been devoted to derive rock mechanical properties from the Schmidt hammer rebound index (R) performed on core samples. From R measurements, the uniaxial compressive strength of rock (rc) can be calculated by means of several mathematical expressions, as reported in Table 1. In this respect, R can be considered as a rapid and cheap indirect measure of compressive strength, but it often shows a large scatter due to the uncertainties pertaining the testing technique, the inherent variability of rock properties, and the transformation model from R to rc. In this paper, the authors propose a new empirical relationship between rc and R measurements, based on the statistical percentile method applied to sedimentary carbonate rocks whose uniaxial resistance falls within the range of feasibility of the Schmidt hammer test.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
