Investigational study on the influence of lime and coir fiber in the stabilization of expansive soil

This research paper describes the method of expansive soil stabilization using lime and coir fibers. Coir fibers are rich in lignin content that helps them to retain their tensile strength even in wet condition. Locally available soil in and around Kuniamuthur, Coimbatore were collected for stabilization. The soil's index properties such as specific gravity, moisture content and compaction effect were determined. The effect of penetration level, compression and shearing were experimented for plain and reinforced soil with varying fiber content such as 0%, 0.5%, 1%, 1.5% along with 5% optimum lime addition based on the previous research studies. The results shows that CBR values increases beyond the 1.5% and UCS and Shear strength attains a maximum value at 1% addition of fiber and 5% optimum level of lime. Hence 1% coco fiber content and 5% lime is concluded to be the optimum addition for an effective soil stabilization.Copyright (C) 2022 Elsevier Ltd. All rights reserved.Selection and peer-review under responsibility of the scientific committee of the Sustainable Materials and Practices for Built Environment.