ABSTRACT: The strength and elastic properties of rocks were measured with a four-point beam device placed inside a pressure vessel. The experiments were conducted with Tennessee sandstone, Indiana limestone, and Berea sandstone. The tensile Young's modulus is nonlinear and best represented by st = A etB, where st, #949t are the tensile stress and tensile strain and A and B are constants. B ranges from 0.56 for tests without confinement to 0.85-0.9 for tests with confinement of 10 MPa or more. The tensile strength depends only slightly on the confining pressure and it ranges from -8.8 MPa to -5.1 MPa. The yielding envelope agrees with the parabolic shape predicted by Griffith. The fractures observed under 20 MPa of confinment are invariably tensile with no indication for transition to shear fractures (faults).
Skip Nav Destination
Tensile Properties of Rocks in Four-Point Beam Tests Under Confining Pressure
Thurman E. Scott
Thurman E. Scott
University of Oklahoma
Search for other works by this author on:
Paper presented at the 1st North American Rock Mechanics Symposium, Austin, Texas, June 1994.
Paper Number:
ARMA-1994-0435
Published:
June 01 1994
Citation
Weinberger, Ram, Reches, Ze'ev, Eidelman, Amir, and Thurman E. Scott. "Tensile Properties of Rocks in Four-Point Beam Tests Under Confining Pressure." Paper presented at the 1st North American Rock Mechanics Symposium, Austin, Texas, June 1994.
Download citation file:
Sign in
Don't already have an account? Register
Personal Account
You could not be signed in. Please check your username and password and try again.
Could not validate captcha. Please try again.
Pay-Per-View Access
$20.00
Advertisement
14
Views
Advertisement
Suggested Reading
Advertisement