A new closed-form equation is presented to measure the tensile strength of rock based on point load strength index. The validity of the proposed equation is further examined experimentally through a set of diametral point load testing of monzonites and two different types of granite having various slenderness (length to diameter) ratio. Based on the results, it is concluded that the induced tensile stress at the centre of a diametral point load specimen as well as the point load strength index are a function of both Poisson's ratio and sample length. In general, when either Poisson's ratio or the length of the sample increases, the induced tensile stress decreases. However, results indicate that the gradient of the induced tensile stress is more sensitive to the sample length than the materials Poisson's ratio. The proposed formula successfully explains such behaviors and provides estimations that are in good agreement with the experimental data.
Skip Nav Destination
52nd U.S. Rock Mechanics/Geomechanics Symposium
June 17–20, 2018
Seattle, Washington
Some New Aspects on the Diametral Point Load Testing
D. J. Williams;
D. J. Williams
The University of Queensland
Search for other works by this author on:
H. Alehossein;
H. Alehossein
University of Southern Queensland
Search for other works by this author on:
H. Roshan
H. Roshan
School of Petroleum Engineering
Search for other works by this author on:
Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, Seattle, Washington, June 2018.
Paper Number:
ARMA-2018-1025
Published:
June 17 2018
Citation
Serati, M., Masoumi, H., Williams, D. J., Alehossein, H., and H. Roshan. "Some New Aspects on the Diametral Point Load Testing." Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, Seattle, Washington, June 2018.
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
15
Views
Advertisement
Suggested Reading
Advertisement