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Lab Services: Rock testing

Lab Services: Rock testing

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Test Method Title

Triaxial Compressive Strength of Undrained Rock Core Specimens Without Pore Pressure Measurements

Reference Number

AASHTO T 226

Material

Rock

Test Property

Shear Strength, Young's Modulus, Angle of Internal Friction

Description of Test

This test method covers the determination of the strength of cylindrical rock specimens in an undrained state under triaxial compression loading. The test provides data useful in determining the strength and elastic properties of rock. 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.

Preferred Test Sample Size

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 2.5:1

Keywords

Rock, Rock Strength, Rock Triaxial, Young's Modulus

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