Improving engineering properties of laterite soil using eco-friendly biopolymers: a study on strength and compressibility
Ahmad M. Ebid, Shailendra Banne, Snehal U. Bobade, Raviraj Sorate
TL;DR
This study explores using eco-friendly biopolymers to improve the strength and compressibility of laterite soil, offering a sustainable alternative to traditional stabilizers.
Contribution
The study introduces xanthan gum and guar gum as effective eco-friendly biopolymers for laterite soil stabilization.
Findings
3% xanthan gum and 2% guar gum increased unconfined compressive strength by 321.40% and 241.05% after 28 days.
Permeability decreased by 93.12% with xanthan gum and 96.96% with guar gum, indicating improved consolidation.
Microstructural analysis showed formation of cementitious products and dense matrices enhancing soil integrity.
Abstract
In recent years, there has been a growing focus on sustainable and eco-friendly alternatives to conventional chemical stabilizers for improving problematic soils. This study investigates the stabilization of laterite soil using eco-friendly biopolymers xanthan gum (XG) and guar gum (GG) to enhance its engineering properties. Soil samples treated with 1% to 4% biopolymer dosages were tested after curing periods ranging from 3 to 28 days. Laboratory evaluations included Unconfined Compressive Strength (UCS), permeability, and consolidation tests, along with microstructural analyses using XRD. The results demonstrated significant improvements in strength, reduced permeability, and enhanced microstructural integrity, confirming the potential of XG and GG as sustainable soil stabilizers. Results reveal that 3% XG and 2% GG are the optimum concentrations, yielding maximum UCS improvements of…
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Taxonomy
TopicsMicrobial Applications in Construction Materials · Concrete and Cement Materials Research · Grouting, Rheology, and Soil Mechanics