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Experimental Characterization of Marcellus Shale

Experimental methods are the most important and reliable way to study rock properties and rock failure mechanisms. The failure mechanism of rock materials due to their mineralogical texture is complex and it is more problematic for anisotropic rock. In this study, seismic velocity measurement, Brazilian tensile strength test, uniaxial (unconfined) compressive strength test, and three point bending test, are conducted on shale specimens to study their properties. The shale used in this study was taken from a Marcellus Shale outcrop in Pennsylvania. For the purpose of comparison, some tests were also conducted on grey shale specimens, taken from Thornton Quarry, located in Thornton, Illinois, just south of Chicago. The results are also compared with the experimental data on Boryeong shale obtained from existing literature. In this study, the experimental results of seismic properties, strength properties and fracture behavior of Marcellus shale specimens have been reported and discussed in great details.