Evaluating foliation tensile strength of metamorphic rock by using pull-off test
Journal
ISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018
ISBN (of the container)
9789811190032
Date Issued
2018
Author(s)
Abstract
The tensile strength of rock is an important property of rock engineering. However, the measurement of tensile strength of rock is often overlooked due to difficulties of specimen preparation and accuracy of testing result. This study adopted the pull-off test to measure the foliation tensile strength of metamorphic rock, including slate, green schist and black schist. Compared with contemporary tensile tests, this method is relatively simple and effective, with easy specimen preparation. Besides, this approach can be conducted not only in the laboratory but also in the field, which is quite useful for evaluating the rock slope stability. This study suggested the procedures of sample preparation and testing as well. The test results indicate that the black schist exhibited the greatest tensile strength, and the slate had the lowest strength. Besides, the slate exhibited significant wetting deterioration. To examine the failure patterns, the failure planes of all specimens occurred on the foliation planes, indicating reasonable failure patterns. © 2018 ISRM & SRMEG (Singapore)
Event(s)
10th Asian Rock Mechanics Symposium, ARMS 2018
Subjects
Foliation
Metamorphic Rock
Schist
Slate
Tensile Strength
Publisher
International Society for Rock Mechanics
Description
10th Asian Rock Mechanics Symposium, ARMS 2018, 29 October 2018 through 3 November 2018, Singapore
Type
conference paper