Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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    Strength Analysis of Geotextile-Reinforced Subgrade
    (Springer Science and Business Media Deutschland GmbH, 2024) Kumar, P.; Gaur, K.; Trivedi, A.
    Subgrade’s poor strength is a common challenge in many road projects. Several materials are used as admixtures to reinforce the subgrade. However, geotextiles are one of the best solutions for reinforcement in the soil. In this work, an investigation of the strengths of subgrades reinforced with jute textile and polypropylene (PP) geotextile is the topic of a comparative study. On both reinforced and non-reinforced soil, tests called the direct shear test (DST) and California bearing ratio (CBR) are conducted. This geotextile’s positioning demonstrates how crucial it is to the subgrade’s overall strength. According to the test results, jute textile (natural fibre) increased the soil sample’s shear strength. Contrarily, the soil’s shear strength decreased when it was reinforced with polypropylene geotextile (synthetic fibre). Selecting D/2, D/3, and D/4 as the placement depths from the top surface for the geotextile, a single, double, and triple layer of geotextile is used to reinforce soil samples for the CBR test. The double-layer reinforcement at depths D/3 and D/4 shows optimum strength. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.
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    Numerical Study on Bearing Capacity Estimation of Circular Footing on Sand Reinforced with Sisal Geotextile
    (Springer Science and Business Media Deutschland GmbH, 2025) Jena, S.; Khatri, V.N.; Nainegali, L.
    This paper presents a study on estimating the bearing capacity of shallow circular footings on sand. In this regard, finite element analysis is conducted, assuming that the sand follows Bolton’s model with a relative density of 75%. Initially, the bearing capacity is determined for unreinforced sand conditions, followed by the placement of geotextile at different depths. The results indicate a significant increase in the ultimate bearing capacity of the footing, up to 2.68 times, compared to the unreinforced case, precisely when the geotextile is placed at a depth of 0.25 times the footing diameter. These findings suggest that sisal geotextile can effectively serve as a reinforcement material for addressing various temporary foundation-related problems. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.