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Failure Modes of Rocks under Uniaxial Compression Tests: An Experimental Approach

Sayantan Chakraborty, Rohan Bisai, Sathish Kumar Palaniappan, Samir Kumar Pal

Abstract


In present scenario, failure of rock is an important concern in the rock engineering. Failure modes of rock are very problematic to understand, so the different failure modes of rock need a complete study. With the help of this research, the design adequacy of an engineering work can be predicted thoroughly. For this requirement, it is very important to analyze the different rock failure modes under uniaxial compression test. When uniaxial compressive strength (UCS) increased for the rock then the different types of failure modes can be seen accordingly. Generally rock samples fail through one or more extensional planes of the fracture development in brittle crystalline rock materials. The main reason behind the different types of failure modes is the microscopic discontinuities in the sample. In this research it can be predicted that whether the rock sample fails in shear or tension. It is assumed that different failure modes influence the strength properties of rock samples. The UCS of rock tested was obtained in shearing along a single plane are the highest value and the values obtained in Axial Splitting are the lowest.

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References


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