A Comparative Study on Compressive Strength & Shear Strength parameter of Clayey Sand Soil Reinforced with randomly dispersed natural fibers

Abstract

Composite materials have been widely used in a variety of applications over the last few decades. Many varieties of natural fibers have been studied for use in geotechnical and construction applications. Among them, Arecaceae family fibers are rich in lignin which constituent of fiber increases the water holding capacity and strength of the composite. The objectives of this research are to compare the effects of different amounts of short Arecaceae family fibers (Coconut, Betel Nut, Toddy Palm) on the geotechnical properties of clayey sand soil in a specific experimental setting. In terms of the dry weight of soil, samples with 0, 0.5, and 1 wt% fiber were analyzed. Unconfined Compressive Strength, Direct Shear test was conducted on the samples. Each fiber improved the ductility and shear parameters of the composite. 1% of betel nut fiber has the best result in compressive strength with increased ultimate strength. For shear strength, 1% of coconut fiber gave the best outcome. Toddy Palm and Coconut fiber both alter the composite to e denser state.