Functional Correlations between Compaction Characteristics, Un-drained Shear Strength and Atterberg Limits

Abstract

Undrained shear strength is one of the useful parameters in order to take engineering decisions. Most often the bearing capacity is estimated based on undrained shear strength to make conservative estimates. Some laboratory tests needed to obtain these values are expensive and time consuming, while soil properties like moisture content and Atterberg limits can be performed faster and cheaper. Many empirical formulae are available to estimate the undrained shear strength for fine grained soils like clay or silt. Determining of undrained shear strength and compressibility parameters in laboratory are really tedious and time consuming. Therefore, a correlation between undrained shear strength and Atterberg limits is useful for restraint of testing number and costs. However, a limited effort is made to understand whether such a relationship is possible in case of soils of Tirupati region of Andhra Pradesh. It is noticed that the there exists a definite relationship