Mechanical analysis and failure modes prediction of composite rock under uniaxial compression

Composite rocks are easily encountered in a wide range of geotechnical construction projects. Understanding their mechanical properties and failure modes is very important to ensure project quality and safety. This study conducted a mechanical analysis to assess the stress distribution in composite...

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Bibliographic Details
Published in:Scientific reports 2021-11, Vol.11 (1), p.22826-22826, Article 22826
Main Authors: Li, Jianguang, Yu, Zhuoqun, Zhou, Ziyi, Wang, Yanchun, Li, Jiwei
Format: Article
Language:English
Subjects:
639/166/986
639/301/1023
Compression
Construction industry
Humanities and Social Sciences
Mechanical properties
multidisciplinary
Project engineering
Rocks
Science
Science (multidisciplinary)
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Summary:Composite rocks are easily encountered in a wide range of geotechnical construction projects. Understanding their mechanical properties and failure modes is very important to ensure project quality and safety. This study conducted a mechanical analysis to assess the stress distribution in composite rock with a horizontal interlayer and predicted the possible failure modes. Uniaxial compression tests were carried out on the composite rock samples to reveal their mechanical properties. It was concluded that a composite rock with a thick interlayer failed more easily than a composite rock with a thin interlayer. Four potential failure modes were related to the internal stress distribution under compression and the differences in deformation capacity and strength among the constituent components. The stress distribution derived from the mechanical analysis could explain the failure mechanism very well. These results verified the validity of the mechanical analysis results and improved understanding of the mechanical properties of composite rock with a horizontal interlayer.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-02331-x