Brazilian test on mechanical behaviors of anisotropic rocks
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Date
2017-07
Authors
Nurmaliana Binti Mohd Khadri
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Abstract
Anisotropic rocks are the properties of rock which vary with direction. This
property may affect tunnelling, quarrying operation and also petroleum engineering in
controlling borehole deviation, stability and deformation. The samples are taking at two
different sites in Perak which is LafargeHolcim at Kanthan and Hume Cement at
Gopeng. The sample at these two sites maybe same in properties as there are the
limestone. However, it may also be different at some aspect since it is occurred at the
different places.The experimental study in this project focused on the failure strength
and fracture pattern of anisotropic rocks under Brazilian test. , At the end of this
experiment, failure strength is expectedly correlated with relative layer orientation. The
failure strength is also expectedly correlated with relative layer activation fracture
length for the tested sample. The higher the inclination angle the lower the failure
strength. The highest tensile strength occurred at 0⁰ which is 16.77 MPa and the lowest
occurred at 75⁰ which are 5.68 MPa for LafargeHolcim. For the Hume cement, the
highest tensile strength occurred at 0⁰ which is 13.23 MPa and the lowest occurred at
90⁰ which are 6.42 MPa for Hume Cement.