Prediction of Brittleness Indices of Sandstones Using a Novel Physico-Mechanical Parameter

In this research, we proposed a novel physico-mechanical parameter (PMP) for predicting the brittleness indices of sandstones. For this purpose, 10 sandstone samples were selected and their uniaxial compressive strength (UCS), Brazilian tensile strength (BTS), point load index (PLI), porosity (n), and brittleness indices were determined. Then, the PMP of samples was calculated based on the ratio of PLI to n. Afterward, some equations were developed between brittleness indices and PMP using regression analyses. The validity of PMP for predicting the brittleness indices was investigated using the raw data obtained from the experimental work carried out by a researcher. It was concluded that the PMP is an accurate and rapid measure for predicting the brittleness indices of rocks.