(4) A triaxial test is conducted on a rock sample with a joint inclined at an angle of 40° to the horizontal. The properties of the intact rock and the joint are given as follows: for intact rock, c=6 MPa, -40°; for joint, cj=2 MPa, g=22°. The confining pressure for the test is 10 MPa. Determine which will fail first, the intact rock or the joint? Determine the value of the axial stress at failure.
(4) A triaxial test is conducted on a rock sample with a joint inclined at an angle of 40° to the horizontal. The properties of the intact rock and the joint are given as follows: for intact rock, c=6 MPa, -40°; for joint, cj=2 MPa, g=22°. The confining pressure for the test is 10 MPa. Determine which will fail first, the intact rock or the joint? Determine the value of the axial stress at failure.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:(4) A triaxial test is conducted on a rock sample with a joint inclined at an angle of
40° to the horizontal. The properties of the intact rock and the joint are given as
follows: for intact rock, c=6 MPa, -40°; for joint, c;=2 MPa, ø=22°. The
confining pressure for the test is 10 MPa. Determine which will fail first, the
intact rock or the joint? Determine the value of the axial stress at failure.
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