Fig. 10.
Results from drained triaxial shearing tests at effective confining pressures of 100, 200 and 300 kPa performed on LBS at an axial displacement rate of 1 mm/h (tests 1–9 and 12–15): (a) average AE rate (RDC/min) measured at peak dilatancy (i.e. q/p′max) plotted against effective confining pressure; (b) average AE rate (RDC/min) measured at peak dilatancy normalised by the mean effective confining pressure plotted against dilation rate Refer to the image caption for details.

Results from drained triaxial shearing tests at effective confining pressures of 100, 200 and 300 kPa performed on LBS at an axial displacement rate of 1 mm/h (tests 1–9 and 12–15): (a) average AE rate (RDC/min) measured at peak dilatancy (i.e. q/p′max) plotted against effective confining pressure; (b) average AE rate (RDC/min) measured at peak dilatancy normalised by the mean effective confining pressure plotted against dilation rate

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