Enhancing Subgrade Stability In Black Cotton Soil Using Coir Fiber And MicroShredded Waste Plastic: An Eco-Friendly Approach
Main Article Content
Abstract
This research paper investigates the stabilization of black cotton soil for road subgrade construction by integrating coir
fiber and micro-shredded waste plastic powder (MSWPP), with a focus on environmental sustainability and economic
efficiency. Traditional soil stabilization techniques, while effective, pose significant environmental and economic
challenges. In response, this study evaluates the feasibility, optimal mix proportions, and enhancement of mechanical
properties using sustainable materials. The chosen mix proportions for this investigation were specifically 0.3% coir fiber
and 10% MSWPP by weight of dry soil. Extensive laboratory tests, including liquid limit, plastic limit, unconfined
compressive strength (UCS), California bearing ratio (CBR), Proctor, free swell index, mechanical analysis, moisture
content, specific gravity, direct shear, consolidation, tri-axial, and swelling pressure assessments, were conducted to assess
the performance of soil samples stabilized with the specified proportions of coir fiber, MSWPP, and their synergistic
combination. The research aims to provide a thorough analysis of how these materials, both separately and together,
contribute to the soil stabilization process, with a particular focus on their impact on mechanical properties and costeffectiveness in comparison to traditional methods. The outcomes of this study aim to offer practical guidelines for the
application of coir fiber and MSWPP in enhancing the durability and sustainability of road infrastructure constructed on
black cotton soil, thereby filling a critical gap in sustainable civil engineering practices
Article Details
References
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