Determination the Brittleness of peridotites Harsin, Kermanshah Province,(case study) using physical and mechanical properties

Rock strength parameters, especially the Brittleness is one of the most important features controlling the behavior of the rock material.Brittleness is a function of strength, which indicates the rock strength against deformation in the elastic range. rock damage is largely the function of rock properties.
Given the Brittleness of engineering projects stones are crucial and direct methods for measuring the Brittleness not standardized, in this study using p-wave speed test, dry density, water absorption percent, Schmidt hammer test, Point Load Test and also Single Axial Compressive Strength Brazilian elasticity on 10 samples of peridotites located in Harsin, Kermanshah Province to determine the implications of Brittleness fracture parameters determined by physical and mechanical characteristics.
According to the results, there is no reasonable and acceptable relationship between dry density and sound speed tests with the brittle rock.The highest adaptation between water absorption test, Schmitt hammer test and point load testwith brittleness indexes is BI , BI B3. That The correlation coefficient of these indices is 0.76(r) , 0.79(r) and 0.98(r) Respectively.
In fact, the mechanical properties of these rocks toward the physical properties are more consistentwith Brittleness index