ASTM International

A New Model of Shear Strength of Simulated Rock Joints

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Courtesy of Courtesy of ASTM International

This paper documents a new model of shear strength of simulated rock joints based on roughness characteristics of the joints. The new model incorporates the concept of shear strength of rock joints proposed by Peek (1981) and Saeb (1990). The model is verified by results of an experimental program involving direct shear tests and the measurement of roughness profiles of simulated joints. The paper concludes that the new model is valid, based on experimental results, for simulated joints made of plaster. More study on other joints made of different materials and on real rock joints is needed to verify the general validity of the model.

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