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Summary The laboratory testing program reported herein describes the statistical correlations of unconfined compressive strength (σc), Young's modulus (Et50), and modulus ratio (MR) to their coefficients of variation (CV(σc), CV(Et50), and CV(MR)). Negative correlation of bothσc andEt50 to CV(σc) indicates that data scatter tends to decrease with increasing strength and stiffness. A positive correlation between MR and CV(σc) indicates that stiffer rocks are more variable for a given compressive strength.
Summary The laboratory testing program reported herein describes the statistical correlations of unconfined compressive strength (σc), Young's modulus (Et50), and modulus ratio (MR) to their coefficients of variation (CV(σc), CV(Et50), and CV(MR)). Negative correlation of bothσc andEt50 to CV(σc) indicates that data scatter tends to decrease with increasing strength and stiffness. A positive correlation between MR and CV(σc) indicates that stiffer rocks are more variable for a given compressive strength.
Analysis of the variability of unconfined compression tests of rock
1990
Article (Journal)
English
Local classification TIB:
560/4815/6545
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
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