Stress threshold identification of progressive fracturing in Bukit Timah granite under uniaxial and triaxial stress conditions

This paper reports the results of an extensive study of the deformation and fracturing of Bukit Timah granite in Singapore under uniaxial and triaxial loading conditions. In the investigation, the stress fracturing thresholds (crack initiation, crack coalescence and crack damage) were determined using stress–strain and stiffness curves and the acoustic emission (AE) detection technique. Crack initiation was found to be best determined by the...