Test Method Title
Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures
Reference Number
ASTM D7012A
Material
Rock
Test Property
Triaxial Compressive Strength
Description of Test
Rock is known to behave as a function of the confining pressure. The triaxial compression test is commonly used to simulate the stress conditions under which most underground rock masses exist. This test method covers the determination of the strength of cylindrical rock core specimens in an undrained state under triaxial compression loading. The test provides data useful in determining the strength and elastic properties of rock, namely: Shear strength at various lateral pressures, angle of internal friction, cohesion intercept, and Young's modulus. It should be observed that this method makes no provision for pore pressure measurements. Thus the strength values determined are in total stress, that is, not corrected for pore pressures.
Number of Test Specimens
1 or more
Test Specimen Size
Right circular cylinder, with diameter of at least 1 7/8 in and a length to diameter ratio of 2 to 2.5
Keywords
rock, Rock Strength, Rock Triaxial