An Alternative Approach for Determination of Rock Material Cohesion and Internal Friction Angle: Case Study of Marble from Peninsular Malaysia = An Alternative Approach for Determination of Rock Material Cohesion and Internal Friction Angle: Case Study of Marble from Peninsular Malaysia

다국어 초록 (Multilingual Abstract)

The determination of rock material cohesion, c and the internal friction angle, Φ requires triaxial testing where expensive triaxial testing equipment as well as complicated testing procedures are needed. As an alternative approach, uniaxial compression with tensile strength testing can determine these two parameters. As part of an overall research programme characterising Malaysian rock mass parameters, sites composed of marble were also investigated. For Gunung Lang site; the average values of cohesion of triaxial testing, uniaxial compression & tensile strength testing at low stress regime and high stress regime are 14.5 MPa, 8.8 MPa and 14.3 MPa. The average friction angles are 49.7°, 50.3° and 35.3°. For Gunung Keriang site; the average values of cohesion for triaxial testing, uniaxial compression & tensile strength testing at low stress regime and high stress regime are 12.0 MPa, 9.6 MPa and 15.2 MPa. The average friction angles are 55.0°, 57.6° and 39.0°. For Gunung Rapat site; the average values of cohesion for triaxial testing, uniaxial compression & tensile strength testing at low stress regime and high stress regime are 20.0 MPa, 12.0 MPa and 18.0 MPa. The average friction angles are 50.0°, 48.0° and 35.5°. From this comparison, it can be seen that the use of uniaxial compression and tensile strength offers a viable option to determine cohesion, c and internal friction angle, Φ of rock.