Fracture toughness testing of rock at elevated temperatures and pressures

M. Seto, M. D. Kuruppu, T. Funatsu

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

    5 Citations (Scopus)

    Abstract

    Fracture toughness tests were done on Kimachi sandstone and Inada granite using two types of core based specimens. In addition to the measurement at ambient conditions, fracture toughness was also determined at elevated temperatures, confining pressures and wet conditions. Elevated temperatures appear to make the rock tougher causing the fracture toughness to increase substantially. Increasing confining pressure also increases the fracture toughness as the pressure causes closure of some pre-existing microcracks and discontinuities. Water content was found to cause reduction of fracture toughness particularly in sandstone. This effect is supposed to be due to the increase in pore pressure.

    Original languageEnglish
    Title of host publicationDC Rocks 2001 - 38th U.S. Symposium on Rock Mechanics (USRMS)
    Editors Elsworth, Tinucci, Heasley
    PublisherAmerican Rock Mechanics Association (ARMA)
    Pages745-751
    Number of pages7
    ISBN (Print)9026518277, 9789026518270
    Publication statusPublished - Jan 1 2001
    Event38th U.S. Symposium on Rock Mechanics, DC Rocks 2001 - Washington, United States
    Duration: Jul 7 2001Jul 10 2001

    Publication series

    NameDC Rocks 2001 - 38th U.S. Symposium on Rock Mechanics (USRMS)

    Other

    Other38th U.S. Symposium on Rock Mechanics, DC Rocks 2001
    CountryUnited States
    CityWashington
    Period7/7/017/10/01

    All Science Journal Classification (ASJC) codes

    • Geophysics
    • Geochemistry and Petrology

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