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May 11, 2026Environmental Geotechnics

Low-carbon expansive soil stabilisation using magnesium-activated industrial by-products

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Authors

HAHafiz Muhammad AlamgirBABadee Alshameri

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Overview

Randomized trial demonstrates enhanced soil properties using magnesium and industrial waste additives, suggesting eco-friendly construction solutions.

Key Points

  • This research aims to develop a sustainable method for stabilizing expansive soils using industrial by-products and magnesium hydroxide.
  • Soil treated with optimal dosages: 11% rice husk ash and 7% silica fume, each with 3% magnesium hydroxide.
  • Geotechnical tests conducted after 7 and 28 days of curing, including UCS, swell potential, and consolidation.
  • Microstructural changes analyzed using X-ray-diffraction, X-ray-fluorescence, and scanning-electron microscopy.
  • UCS increased by 320% for RHA and 210% for SF mixtures after 28 days.
  • Plasticity index decreased by 54% for RHA and 48% for SF, with swelling potential reduced by up to 99.5%.
  • Compressibility decreased significantly by 71% for RHA and 89% for SF.

Cite This Study

Alamgir et al. (2026) studied this question.

synapsesocial.com/papers/6a01720a3a9f334c2827218ehttps://doi.org/10.1680/jenge.25.00172
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