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Development of a very weak analog sandstone for brittle instability modelling in underground excavation

Wibisono, Doandy Y.
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Gutierrez, Marte
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2024-04
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2024 Graduate Research And Discovery Symposium (GRADS) posters and presentations
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Wibisono_Doandy_GRADS2024.pdf
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https://hdl.handle.net/11124/179037
 https://doi.org/10.25676/11124/179037
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Abstract
An unusually very weak (ISRM, 1981) brittle analog sandstone is developed. Brittle analog sandstone specimens are prepared, conforming to mortar mixing terminology. Base mix constituents used are Type I/II Portland cement, F-75 Ottawa sand, and distilled water. The developed sedimentary rock is isotropic, homogenous, and densely compacted. Engineering treatments to the mixture were found to improve the brittleness.
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