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 D7012C
Material
Rock
Test Property
Uniaxial Compressive Strength
Description of Test
A rock core sample is cut to length and the ends are machined flat. The specimen is placed in a loading frame and, if required, heated to the desired test temperature. Axial load is continuously increased on the specimen until peak load and failure are obtained. Unconfined compressive strength of rock is used in many design formulas and is sometimes used as an index property to select the appropriate excavation technique.
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 Unconfined Compressive Strength, Rock Uniaxial Compressive Strength