Multiaxial Behavior of Compacted Artificially Lightly Cemented Sands
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 149, Issue 12
Abstract
The multiaxial behavior of an artificially lightly cemented sand was investigated using the cubical cell apparatus (CCA). Two different cement–sand blends were prepared by compaction at different densities and cement contents but featuring a similar porosity/volumetric cement content index. The two blends were subjected to a semirosette of probing stress paths in the octahedral plane with orientation from the vertical stress axis of 0°, 30°, 60°, 90°, 120°, 150°, and 180° in order to explore the multiaxial response and a full failure envelope for artificially lightly cemented sands. The stress–strain behavior and the strength failure envelope revealed the presence of some material cross-anisotropy. The experimental data were well fitted by a modification of well-established theoretical multiaxial failure envelopes to account for the material anisotropy. The shape of the strength envelope in the octahedral plane seemed to be independent of the individual blend compositions (porosity and cement content) because the porosity/cement content index was the same. Further tests exploring the material mixture space are required to validate this initial observation.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors express their gratitude to the Brazilian Research Council (CNPq) for the financial support (Grants 307289/2018-4 and 402572/2021-1).
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Received: Oct 4, 2022
Accepted: Aug 3, 2023
Published online: Oct 3, 2023
Published in print: Dec 1, 2023
Discussion open until: Mar 3, 2024
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