Browsing by Author "Athira, S."

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    A Critical Analysis of Curve Fitting Procedures Used in Evaluating Co-Efficient of Consolidation of Soils
    (Springer Science and Business Media Deutschland GmbH, 2025) Athira, S.; Sridhar, G.
    Consolidation settlement is the time-dependent phenomenon. Coefficient of consolidation is essential to estimate the rate of settlement of structures founded on saturated fine-grained soil. One of the common methods used to determine the coefficient of consolidation is through curve-fitting procedure. These procedures involve fitting a theoretical model to experimental data obtained from laboratory tests, such as the oedometer test. The Casagrande log t method and Taylor’s root t method are the standard methods to find the vertical coefficient of consolidation (cv). To design vertical drains, Barron’s theory is commonly used which requires coefficient of radial consolidation (cr). Over the past decade, several curve-fitting procedures namely the inflection method, rectangular hyperbola method, one-point method, early-stage log t method and many more, have been developed to determine either vertical or radial coefficients of consolidation. This paper provides a comprehensive review of procedures used for computing the vertical and radial coefficient of consolidation, offering a comparative analysis with advantages, limitations, and practical use of each method. Also, cv and cr of kaolin clay are determined through various methods. This assessment will be helpful to both academics and working engineers in accurately choosing the appropriate method for estimating the rate of settlement in saturated fine-grained soils. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
  • No Thumbnail Available
    Item
    A Critical Review on Potential Use of Iron Ore Tailings as Structural Fill Material
    (Springer Science and Business Media Deutschland GmbH, 2023) Athira, S.; Sridhar, S.
    India is well enriched with abundant resources of magnetite and hematite iron ore. Mining activities are tremendously increasing to cater the demand of market, which in turn is responsible for huge generation of mining waste. Mine tailings impoundments produced during beneficiation and extraction of iron ores create environmental threat and are disposed at high monetary and ecological cost. There is a need to find a sustainable and economical solution to handle large quantity of generated waste. Depleting natural resources like granular soil as backfill material needs a substitution in many application-like pavements, mechanically stabilized wall, embankments, etc. This paper presents a critical review on literatures highlighting on use and reuse potential of iron ore tailings as a backfill material in structural application such as MSE wall, embankments, pavements. Characterization and engineering behaviour of the tailings are the central necessity for estimating its effectiveness as its properties vary from ore structure. Mineralogical characterization, shear strength, permeability, workability, and compressive strength are the properties discussed in this paper. Results show that iron ore tailings have properties which can be considered as an effective substitute in structural applications. Adopting it as backfill material can be considered an environmentally friendly method of stabilization. It protects the surface structures and abate subsidence in abandoned underground mines. It has its potential in handling large volume of tailings and significantly reduces the quantity of waste generated in the state. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.