Experimental Investigation on Failure Modes and Mechanical Properties of Rock-Like Specimens with a Grout-Infilled Flaw under Triaxial Compression
AffiliationUniv Arizona, Rock Mass Modeling & Computat Rock Mech Labs
KeywordsGeotechnical Engineering and Engineering Geology
Mechanics of Materials
Civil and Structural Engineering
Condensed Matter Physics
MetadataShow full item record
CitationHuilin 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.
JournalSHOCK AND VIBRATION
RightsCopyright © 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 InformationThis 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 email@example.com.
AbstractFlaws 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.
NoteOpen access journal
VersionFinal published version
SponsorsNational 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