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    Experimental Investigation on Failure Modes and Mechanical Properties of Rock-Like Specimens with a Grout-Infilled Flaw under Triaxial Compression

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    Author
    Le, Huilin
    Sun, Shaorui
    Zhu, Feng
    Fan, Haotian
    Affiliation
    Univ Arizona, Rock Mass Modeling & Computat Rock Mech Labs
    Issue Date
    2019
    Keywords
    Geotechnical Engineering and Engineering Geology
    Mechanical Engineering
    Mechanics of Materials
    Civil and Structural Engineering
    Condensed Matter Physics
    
    Metadata
    Show full item record
    Publisher
    HINDAWI LTD
    Citation
    Huilin Le, Shaorui Sun, Feng Zhu, and Haotian Fan, “Experimental Investigation on Failure Modes and Mechanical Properties of Rock-Like Specimens with a Grout-Infilled Flaw under Triaxial Compression,” Shock and Vibration, vol. 2019, Article ID 4909534, 14 pages, 2019. https://doi.org/10.1155/2019/4909534.
    Journal
    SHOCK AND VIBRATION
    Rights
    Copyright © 2019 Huilin Le et al. +is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Flaws existing in rock mass are one of the main factors resulting in the instability of rock mass. Epoxy resin is often used to reinforce fractured rock mass. However, few researches focused on mechanical properties of the specimens with a resin-infilled flaw under triaxial compression. Therefore, in this research, epoxy resin was selected as the grouting material, and triaxial compression tests were conducted on the rock-like specimens with a grout-infilled flaw having different geometries. This study draws some new conclusions. The high confining pressure suppresses the generation of tensile cracks, and the failure mode changes from tensile-shear failure to shear failure as the confining pressure increases. Grouting with epoxy resin leads to the improvement of peak strengths of the specimens under triaxial compression. The reinforcement effect of epoxy resin is better for the specimens having a large flaw length and those under a relatively low confining pressure. Grouting with epoxy resin reduces the internal friction angle of the samples but improves their cohesion. This research may provide some useful insights for understanding the mechanical behaviors of grouted rock masses.
    Note
    Open access journal
    ISSN
    1070-9622
    DOI
    10.1155/2019/4909534
    Version
    Final published version
    Sponsors
    National Natural Science Foundation of China [41672258, 41102162]; Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX18_0622]; Fundamental Research Funds for the Central Universities [2018B695X14]; Chinese Scholarship Council
    ae974a485f413a2113503eed53cd6c53
    10.1155/2019/4909534
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