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Geomechanics and Engineering
  Volume 5, Number 4, August 2013 , pages 331-342

Behavior of geotextile reinforced flyash + clay-mix by laboratory evaluation
Jigisha M. Vashi, Atul K. Desai and Chandresh H. Solanki

    The major factors that control the performance of reinforced soil structures is the interaction between the soil and the reinforcement. Thus it is necessary to obtain the accurate bond parameters to be used in the design of these structures. To evaluate the behavior of flyash + clay soil reinforced with a woven geotextile, 36 Unconsolidated-Undrained (UU) and 12 reinforced Consolidated.Undrainrained (CU) triaxial compression tests were conducted. The moisture content of soil during remolding, confining pressures and arrangement of geotextile layers were all varied so that the behavior of the sample could be examined. The stress strain patterns, drainage, modulus of deformation, effect of confinement pressures, effects of moisture content have been evaluated. The impact of moisture content in flyash + clay backfills on critical shear parameters was also studied to recommend placement moisture for compaction to MDDM. The results indicate that geotextile reinforced flyash + clay backfill might be a viable alternative in reinforced soil structures if good-quality granular backfill material is not readily available.
Key Words
    geotextiles; flyash; clay; shear parameters; triaxial tests
Jigisha M. Vashi, Atul K. Desai and Chandresh H. Solanki: Applied Mechanics Department, S V National Institute of Technology, Surat - 395007, Gujarat, India

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