Effect on geotechnical properties of the clayey soil with the inclusion of sisal fibre
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Date
2020-12
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
In many situations, soils cannot be used directly as road service layers, foundation layers and as a construction material, hence the properties of these soils should be changed. Expansive soils are one of those kinds of soils whose volume change when it comes in contact with water. It shows shrinkage and swelling behaviour due to montmorillonite clay mineral, due to which it results into failure of pavements in the form of settlement and cracking. Geotechnical Engineering faces various problems while designing Foundation because of clayey soil due to poor bearing capacity and excessive Settlement. These problems can be rectified by various engineering methods. In this research work Sisal Fibres are chosen for improving soil parameters and this method is cost-effective and eco-friendly one. Use of natural Fibres in civil engineering for improving soil properties is advantageous because they are cheap, locally available and eco-friendly. Sisal is one of the natural Fibres widely available in most parts of the World. It requires minimum financial input and maintenance for cultivation and is often grown in wastelands, which helps in soil conservation. Sisal
Fibre is better than other natural Fibres in terms of strength. The present study focusses on modifying the geotechnical properties of the soil by adding different percentages of Sisal Fibre. Sisal Fibre was procured from Chennai and soil were collected from the fields of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar (Uttrakhand). The testing was conducted in two phases. In the first phase, geotechnical properties of the soil were studied by conducting Laboratory Tests. In the second phase, soil was mixed with different percentages of Sisal Fibre i.e., 0.5%, 1%, 1.5% and 2% were subjected to various tests. Experimental
results clearly shows that the sisal fibre can be effectively used for improving the geotechnical properties of the soil.