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Application of vane shear tools to assess the shear strength of remolded clay soil

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Author Affiliations

  • 1Department of Civil and Environmental Engineering, Shahjalal University of Science and Technology (SUST), Sylhet-3114, Bangladesh
  • 2Department of Civil and Environmental Engineering, Shahjalal University of Science and Technology (SUST), Sylhet-3114, Bangladesh
  • 3Department of Civil and Environmental Engineering, Shahjalal University of Science and Technology (SUST), Sylhet-3114, Bangladesh

Res. J. Engineering Sci., Volume 6, Issue (1), Pages 1-4, January,26 (2017)

Abstract

The un-drained shear strength of soil is of great concern in certain geotechnical engineering applications. Several methods for determining this parameter exists. Among them, vane shear test (VST) is one of the easy and simple methods which are useful for very soft to firm clay to calculate the un-drained shear strength. A substantial discrepancy between shear strength at Atterberg limits proposed by different researchers, but it known that shear strength is constant at Atterberg limits. This research is try to find the shear strengths at plastic limit (PL) and liquid limit (LL) by laboratory vane shear tools to re-appraise the un-drained shear strength at two major Atterberg limits employing on a small scale of remolded soil sample of sylhet clay. Observation showed that the un-drained shear strength is lower in the range for plastic limit and slightly higher in the range for liquid limit as compared with previous works. This study revealed that for plastic clayey soil the shear strength is almost 50 kPa at plastic limit and 5.0 kPa at the liquid limit.

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