Question: A unixial compression test on a sandstone specimen is to be conducted under displacement-controlled condition. The specimen is 50mm in diameter and 100mm in height.

A unixial compression test on a sandstone specimen is to be conducted under displacement-controlled condition. The specimen is 50mm in diameter and 100mm in height. The young's modulus of the sandstone is 50GPa, and the uniaxial compressive strength is 150MPa. If the uniaxial compressive strength in this test should be reached in about 10 minutes, what is the displacement rate should be applied on the specimen? What is the corresponding strain rate of the specimen

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