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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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| Ali, M. A. |
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Doherty, James
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2021Relationships between lateral and rotational load transfer stiffnesses and soil modulus for the elastic response of monopilescitations
- 2017Cyclic shear response of cemented paste backfillcitations
- 2016Stress-strain response of fine silica sand using a miniature pressuremeter
- 2016Influence of curing temperature and stress conditions on mechanical properties of cementing paste backfillcitations
- 2016Stress-strain response of fine silica sand using miniature pressuremeter.
- 2016Experimental study of the evolution of the soil water retention curve for granular material undergoing cement hydrationcitations
- 2003Elastic response of circular footings embedded in a non-homogeneous half-space
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article
Cyclic shear response of cemented paste backfill
Abstract
<p>A constant-volume direct simple shear (DSS) apparatus was used to characterize the liquefaction resistance of cemented paste backfill (CPB) prepared using unclassified fine-grained tailings. The effects of curing age, cement content, and initial void ratio (also expressed through initial solids content of the mixture) on the resistance to liquefaction were investigated. Higher cement contents, longer curing periods, or higher initial solids contents were found to increase CPB liquefaction resistance in a consistent manner. The commonly used "100-kPa unconfined compressive strength (UCS) rule of thumb" for CPB liquefaction susceptibility, as originally adopted from lightly cemented sands, was found to be conservative under a large earthquake-induced cyclic stress ratio (CSR). For two different mixes, a UCS of approximately 70 kPa was found adequate to resist liquefaction under a CSR typically generated by a maximum ground acceleration of 0.3 g. For the samples tested, a UCS of 70 kPa was found to correspond to a shear wave velocity of 220 m=s, which may be a more convenient criterion for assessing liquefaction resistance, given the potential for in situ measurement.</p>