A sustainable bioengineering approach for enhancing black cotton soil stability using waste foundry sand

Padam Siva Kumar, Pramod Kumar, N Manikandan, P Thejasree, Neeraj Sunheriya, Jayant Giri, Rajkumar Chadge, T Sathish, Ajay Kumar and Muhammad Imam Ammarullah

International Journal of Low-Carbon Technologies, 2025, vol. 20, 1112-1120

Abstract: The disposal of waste foundry sand (WFS) poses environmental challenges, necessitating sustainable bioengineering solutions. This study investigates WFS as a stabilizer for black cotton soil (BCS) to enhance its geotechnical properties for construction. BCS mixed with 10%–40% WFS was evaluated through Atterberg limits, compaction, unconfined compressive strength (UCS), and California bearing ratio (CBR) tests. The optimal 20% WFS reduced the liquid limit by 17.18%, decreased plasticity by 28%, and improved UCS by 157.45%. CBR values increased significantly, highlighting WFS’s potential in bioengineering applications for sustainable soil stabilization and environmental conservation.

Keywords: black cotton soil (BCS); waste foundry sand (WFS); unconfined compressive strength (UCS); California bearing ratio (CBR) (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:oup:ijlctc:v:20:y:2025:i::p:1112-1120.

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