Cemented Paste Backfill 1-D Consolidation Results Interpreted in the Context of Ground Reaction Curves

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Abbreviations

CC:

Cement content

CT:

Curing time

e 0 :

Void ratio after curing

e :

Void ratio at the end of each consolidation step

UCS:

Unconfined compressive strength

\({\sigma^{\prime}}_{v}\) :

Effective axial stress in oedometer test

\({\sigma }_{f}\) :

Effective backfill reaction stress

\(\varepsilon\) :

Closure strain

PYCL:

Post-yield compression line

PYCLS:

Post-yield compression line slope

\({B}_{i}\) :

Constant coefficients

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Acknowledgements

The authors wish to express their gratitude to Barrick Gold Corp and Natural Sciences and Engineering Research Council Canada (Collaborative Research and Development Grant #514220–1) for financial support to this research as a part of a larger investigation into the behaviour of high-performance cemented paste backfill.

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Jafari, M., Shahsavari, M. & Grabinsky, M. Cemented Paste Backfill 1-D Consolidation Results Interpreted in the Context of Ground Reaction Curves. Rock Mech Rock Eng (2020). https://doi.org/10.1007/s00603-020-02173-5

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Keywords

  • Cemented paste backfill
  • Consolidation
  • Laboratory tests
  • Backfill reaction curve
  • Underground support
  • Closure strains