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Cebasek V.,Rudarsko geoloski fakultet | Boskovic Z.,NIS Naftagas | Gojkovic N.,Rudarsko geoloski fakultet | Mitrovic V.,Rudarsko geoloski fakultet
Technics Technologies Education Management | Year: 2010

Usage of cement slurry with additives for expansion and flexibility is not always reasonable. In the wells, which shall not undergo cyclic stress or changes in well conditions, it is required to analyze, through application of a model, whether compression strength of cement stone is sufficient to sustain radial σr, tangential σq stress and deformations. If that would be the case, than standard types of cement slurry, with corresponding compression strength of cement stone, assure stability of cemented annulus during production well life.

Hadzi-Nikovic G.,Rudarsko Geoloski Fakultet | Coric S.,Rudarsko Geoloski Fakultet | Caki L.,Rudarsko Geoloski Fakultet
Gradjevinar | Year: 2014

The influence of grain size distribution, initial moisture, dry bulk density, and capillary suction on an increase in shear strength of unsaturated compacted silty loess soil is presented in the paper. The unsaturated soil strength is determined via the experimentally determined dependencies between the moisture-capillary suction and the effective shear strength parameters for saturated soil, c',

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