Faculty Publications
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Publications by NITK Faculty
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Item Study on Physical, Mechanical, Morphological, and Crystallographic Properties of Chemically Treated Sisal Fibers(Korean Fiber Society, 2024) Jena, S.; Khatri, V.N.; Nainegali, L.; Dutta, R.K.This research is focused on the physical, mechanical, morphological, elemental, and crystallographic properties of untreated, chemically treated, and emulsion-coated sisal fibers. Physical properties, such as diameter and water absorption, were investigated, while mechanical properties, including tensile strength, elongation at break, and modulus of elasticity, were assessed. The findings indicate a significant enhancement in tensile strength (up to 96.7%) and elastic modulus values (up to 214.43%) after chemical treatment, accompanied by a decrease in elongation at break (up to 56.8%). Interestingly, emulsion coating reduced the tensile strength and elastic modulus values, with a marginal increase in elongation at break for treated fibers. The fibers subjected to benzoylation exhibited the highest tensile strength and elastic modulus, followed by alkali-treated fibers. This trend was consistent for emulsion-coated fibers as well. The study outcomes were substantiated by examining the morphological, elemental, and crystallographic aspects of untreated and treated/coated fibers, indicating their suitability for diverse engineering applications. © The Author(s), under exclusive licence to the Korean Fiber Society 2024.Item Bearing ratio behaviour of sisal geotextile reinforced fly ash overlying clay(Taylor and Francis Ltd., 2025) Jena, S.; Khatri, V.N.; Nainegali, L.The paper examines the bearing ratio behaviour of sisal geotextile reinforced fly ash over clay. It also evaluates the effects of alkali treatment and emulsion coating of the geotextile on the bearing ratio at optimal placement depths. Results show that using one, two, and three layers of untreated geotextile increased the CBR by 19.6%, 55%, and 78% at different placement depths (1.5B, 1B, and 0.5B), where B is the plunger diameter. Alkali-treated and emulsion-coated geotextiles increased the CBR by 24.6% and 15.6%, respectively. However, soaking reduced the CBR by 76.6%, with the greatest decrease observed in triple-reinforced alkali-treated samples. Punching tests and morphological analyses supported the study outcomes. A numerical study of a pavement section, based on the experimental results, recommends sisal geotextile for rural roads using load equivalency factors and the structural number approach. © 2025 Informa UK Limited, trading as Taylor & Francis Group.