Evaluating foliation tensile strength of metamorphic rock by using pull-off test

Meng-Chia Weng*, Jin Hong Li, Cheng Han Lin, Chu Tsen Liao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018
PublisherInternational Society for Rock Mechanics
ISBN (Electronic)9789811190032
StatePublished - 1 Jan 2018
Event10th Asian Rock Mechanics Symposium, ARMS 2018 - Singapore, Singapore
Duration: 29 Oct 20183 Nov 2018

Publication series

NameISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018

Conference

Conference10th Asian Rock Mechanics Symposium, ARMS 2018
CountrySingapore
CitySingapore
Period29/10/183/11/18

Keywords

  • Foliation
  • Metamorphic Rock
  • Schist
  • Slate
  • Tensile Strength

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  • Cite this

    Weng, M-C., Li, J. H., Lin, C. H., & Liao, C. T. (2018). Evaluating foliation tensile strength of metamorphic rock by using pull-off test. In ISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018 (ISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018). International Society for Rock Mechanics.