Effect of confining stress and loading rate on fracture toughness of rocks

T. Y. Ko, John M Kemeny

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

2 Scopus citations

Abstract

In this research, the effect of confining stress and loading rate on the fracture toughness has been investigated. The short beam compression test has been used to estimate the fracture toughness for Flagstaff sandstone. A brief theoretical analysis of the effects of confining stress and loading rate the fracture toughness is presented. This analysis considers changes to the critical fracture process zone size due to confining stress and loading rate. It is found that experimental results agree with the fracture mechanics theory. The mode II fracture toughness is found to increase with increasing confining stress and increasing loading rate.

Original languageEnglish (US)
Title of host publicationProceedings of the 1st Canada-US Rock Mechanics Symposium - Rock Mechanics Meeting Society's Challenges and Demands
Pages625-629
Number of pages5
Volume1
Publication statusPublished - 2007
Event1st Canada-US Rock Mechanics Symposium - Rock Mechanics Meeting Society's Challenges and Demands - Vancouver, BC, Canada
Duration: May 27 2007May 31 2007

Other

Other1st Canada-US Rock Mechanics Symposium - Rock Mechanics Meeting Society's Challenges and Demands
CountryCanada
CityVancouver, BC
Period5/27/075/31/07

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ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Civil and Structural Engineering

Cite this

Ko, T. Y., & Kemeny, J. M. (2007). Effect of confining stress and loading rate on fracture toughness of rocks. In Proceedings of the 1st Canada-US Rock Mechanics Symposium - Rock Mechanics Meeting Society's Challenges and Demands (Vol. 1, pp. 625-629)