triaxial compression test

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triaxial compression test A test for the compressive strength in all directions (compare UNIAXIAL COMPRESSION TEST) of a rock or soil sample, using a triaxial cell. Tests in which drainage is prevented are called ‘undrained’ tests and the strengths obtained are ‘undrained’ strengths. When pores are allowed to empty, the tests are called ‘drained’ tests and the strengths obtained are ‘drained’ strengths.

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