Proceedings of the Rocscience International Conference (RIC 2023)

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Shear Behavior of 3D Printed Stochastic Rock Discontinuities

Authors
Amirhossein Medghalchi1, Bing Q. Li1, *
1Department of Civil and Environmental Engineering, Western University, London, ON, Canada
*Corresponding author. Email: bing.li@uwo.ca
Corresponding Author
Bing Q. Li
Available Online 8 November 2023.
DOI
10.2991/978-94-6463-258-3_31How to use a DOI?
Abstract

Discontinuities have a significant impact on the geomechanical behaviour of rock masses and corresponding implications across rock engineering applications. The design, construction, safety, and stability analysis of rock masses are all based on the measurement of mechanical characteristics. Unfortunately, it is impossible to determine the uncertainty of a single discontinuity strength measurement since an individual specimen can only be tested once before it accumulates damage. This limitation can be addressed by recent advancements in 3D printing (3DP) technology to create multiple artificial discontinuity specimens with exactly the same geometry. In this study, we create molds utilising 3D printing technology, which allows us to cast discontinuity specimens using high-strength and brittle cement-based materials with mechanical properties close to rocks. These specimens are then tested in a Direct Simple Shear device. Specimens were not printed directly because there does not exist a 3DP material that can meet the requirements for high strength, high brittleness, and low ductility. We present uncertainty estimates for peak and residual friction angles at five values of JRC (Joint Roughness Coefficient) simulated using Gaussian random fields.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the Rocscience International Conference (RIC 2023)
Series
Atlantis Highlights in Engineering
Publication Date
8 November 2023
ISBN
10.2991/978-94-6463-258-3_31
ISSN
2589-4943
DOI
10.2991/978-94-6463-258-3_31How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Amirhossein Medghalchi
AU  - Bing Q. Li
PY  - 2023
DA  - 2023/11/08
TI  - Shear Behavior of 3D Printed Stochastic Rock Discontinuities
BT  - Proceedings of the Rocscience International Conference  (RIC 2023)
PB  - Atlantis Press
SP  - 298
EP  - 308
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-258-3_31
DO  - 10.2991/978-94-6463-258-3_31
ID  - Medghalchi2023
ER  -