Prediction of fsi value by using hyperbola method

Abstract

Expansive soils are problematic soils due to their swelling nature, pose a major threat to most of the civil engineering structures. So, in order to avoid damage of structures free swell index test is conducted before the structure is built. In this paper an attempt has been made, to predict the free swell index of different expansive soils before 24 hours by using Hyperbola method. Samples are collected from 4 different areas from Telangana region. Free swell index test is conducted and the sediments in distilled water are noted by taking readings at particular time intervals depending on rate of fall of sediments for different soils. By considering initial sediment values from the obtained values, final value is predicted by using Hyperbola method. FSI is calculated by considering the predicted sediment value in distilled water to the sediment value in kerosene. Thus it is observed that predicted values and the final values in 24 hours are almost similar and hence it can be concluded that by using Hyperbola method we can terminate the experiments before the equilibrium is attained.