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<p>Ferrochrome slag, an industrial byproduct, offers a sustainable alternative to natural sand for foundation applications. The present study assesses its suitability for closely spaced square and rectangular footings through experimental load tests on medium-density (RD 65%) slag beds prepared using the sand rain technique, with geotextile reinforcement enhancing performance. Numerical simulations using PLAXIS 3D validate that layered slag beds, comprising a medium-dense upper layer (RD 65%) and a loose lower layer (RD 30%), optimise load distribution. Results demonstrate that reinforcement layers significantly improve ultimate bearing capacity (UBC), with square footings exhibiting greater enhancement due to superior confinement effects. While the interference factor decreases with spacing, it increases with reinforcement. Rectangular footings experience greater stress concentration along their longitudinal axis. This study establishes ferrochrome slag as a viable construction material, promoting resource-efficient infrastructure development while mitigating environmental impact.</p>

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Impact of Twin Adjacent Footings on Ferrochrome Slag Bed

  • 期刊论文

  • 发表日期：

    2025年8月18日

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  • Debaruna Naskar,
  • Bandita Paikaray,
  • Soumyadipta Singha,
  • Benu Gopal Mohapatra

摘要

Ferrochrome slag, an industrial byproduct, offers a sustainable alternative to natural sand for foundation applications. The present study assesses its suitability for closely spaced square and rectangular footings through experimental load tests on medium-density (RD 65%) slag beds prepared using the sand rain technique, with geotextile reinforcement enhancing performance. Numerical simulations using PLAXIS 3D validate that layered slag beds, comprising a medium-dense upper layer (RD 65%) and a loose lower layer (RD 30%), optimise load distribution. Results demonstrate that reinforcement layers significantly improve ultimate bearing capacity (UBC), with square footings exhibiting greater enhancement due to superior confinement effects. While the interference factor decreases with spacing, it increases with reinforcement. Rectangular footings experience greater stress concentration along their longitudinal axis. This study establishes ferrochrome slag as a viable construction material, promoting resource-efficient infrastructure development while mitigating environmental impact.