Comparison on the Behaviour of Bamboo and Polypropylene Fibre in Soil Stabilization

Abstract

Abstract: In the practice of geotechnical engineering, soil improvement is regarded as one of the most significant solutions, particularly in the case of weak soil conditions. Expansive soil exposed to climatic changes and moisture content, experiences a significant volume shift. Building foundations, paving structures, irrigation systems, and other geotechnical engineering projects are just a few examples. To prevent swelling and shrinkage characteristics, stabilizing the expansive soil is crucial. For considerations of sustainability and economy, stabilizing material selection is crucial. In this project, the soil stabilization is accomplished using reasonably priced and easily accessible materials like bamboo fiber and polypropylene fibre. Soil is replaced by NaOH treated bamboo fibre from 0.2 to 1% at the interval of 0.2% and the same is repeated by replacing the soil with 1% to 3% at the interval of 0.5%. It was observed that, there is marginal increase in dry density of the treated soil samples and reduction compressibility. The maximum Unconfined Compressive Strength (UCS) was obtained for optimum 0.4% of bamboo fibre and 1.5% of polypropylene fibre with replacement of soil. The performance of bamboo fibre was compared with that of polypropylene fibre. The bamboo fibre showed better results than polypropylene fibre.