Compressive Strength Of Granite Rock

Granite ˈ ɡ r æ n ɪ t is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture.

Compressive strength of granite rock.

A stone floor has to withstand loads of people and heavy objects. Some results for uniaxial compressive strength σ c and tensile strength σ t. The tensile strength of rock is defined as the pulling force required to rupture a rock sample divided by the sample s cross sectional area. In the context of fracture gradient only the tensile strength of rock is of importance.

The size effect ceases to be of much consequence. A wall stone has to bear the compressive load of the stone s weight. So compressive strength is the highest load per unit area borne by the stone without giving in. Granites can be predominantly white pink or gray in color depending on their mineralogy the word granite comes from the latin granum a grain in reference to the coarse grained structure of such a completely crystalline rock.

Testing of intact rock for strength 2 1 uniaxial compression recall the typical stress strain response curve for a specimen of intact rock under uniaxial compression see figure 1 in lecture notes 5. Rock strength is specified in terms of tensile strength compressive strength shear strength and impact strength. Uniaxial compressive strength c o x 1000 psi 0 50 100 150 specimen length l in variation of compressive strength with size c o 35 x l 0 14 in this plot of the size effect on strength a power function was used to best fit the experimental data. Material compression strength σ tension strength σ psi mpa psi mpa.

Strictly speaking granite is an. Note however that beyond l 36 in. The strength values are comparable to determinations of uniaxial compressive strength tests of westerly granite which range from 130 mpa to 210 mpa heard and others 1974. This conclusion is drawn from a great number of experiments 1 2 4 8 9 11 17 19 the higher the temperature is the lower the strength.

Of samples 181 7 324 0 48 8 275 2. The slopes of best fitting lines to the elastic portions of the stress strain data from the strength experiments were taken for the values of young s modulus.