Algerian Journal of Research and Technology
Volume -3, Numéro -1, Pages 38-45
2019-12-01
Authors : Koupouli Jean-frédéric N. .
After placement underground, the physical–chemical and mechanical properties of unsaturated cemented paste backfill (CPB) will evolve over time due to self-weight consolidation and binder hydration. However, the behavior of the interface CPB-rock wall is not well known. This paper attempt to bring experimental results in order to better understand this behavior. The rock interface replicas were made from natural rock surfaces (schist and granite). Both frictional shear and shear bond strengths were determined. The results show that the shear strength at the schist interface (rougher) is higher than the one at the granite interface. The cohesion and the interfacial friction angle depend on the CPB curing time (hydration) and the applied normal stress.
Cemented paste backfill, Rock surface, Shear strength, Cohesion, Friction angle
Jean-frédéric N. Koupouli A, T. Belem A, P. Rivard Jean-frédéric N. Koupouli A, T. Belem A, P. Rivard
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pages 30-37.
Rouaz Idriss
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Bourahla Nouredine
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Kechidi Smail
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pages 399-417.
Hassan Mohamed
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Abdel Rahman Ahmed
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Sherif Alaa
.
Osman Mostafa
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Ahmed Asmaa
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pages 3-10.
Raka Tabassum Mahzabeen
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Amanat Khan Mahmud
.
pages 259-268.
Raka Tabassum Mahzabeen
.
Amanat Khan Mahmud
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pages 83-91.