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<p>This study investigated the effectiveness of guar gum, a natural biopolymer, in stabilizing micaceous soil. Soil samples were treated with varying guar gum contents (0.5–3%) and were tested for specific gravity, Atterberg limits, compaction characteristics, unconfined compressive strength (UCS), and California bearing ratio (CBR). Increasing the guar gum content enhanced plasticity and moisture retention while reducing specific gravity and dry density. The optimum dosage of 1.5% yielded maximum improvement: UCS increased from 45 to 210.7&#xa0;kPa, and soaked CBR rose from 2.12 to 7.05%. Micro-structural investigations using scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction revealed improved particle bonding, reduced voids, and the formation of a gel-like matrix around soil particles. These findings confirmed the potential of guar gum as an eco-friendly and sustainable alternative to conventional stabilizers such as lime and cement.</p> Graphical Abstract <p></p>

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Effect of Guar Gum on Mechanical and Microstructural Behavior of Micaceous Soil

  • 期刊论文

  • 发表日期：

    2025年8月30日

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  • Amaranatha Ginkapalli Anjaneyappa,
  • Seelam Srikanth,
  • Subhashish Dey

摘要

This study investigated the effectiveness of guar gum, a natural biopolymer, in stabilizing micaceous soil. Soil samples were treated with varying guar gum contents (0.5–3%) and were tested for specific gravity, Atterberg limits, compaction characteristics, unconfined compressive strength (UCS), and California bearing ratio (CBR). Increasing the guar gum content enhanced plasticity and moisture retention while reducing specific gravity and dry density. The optimum dosage of 1.5% yielded maximum improvement: UCS increased from 45 to 210.7 kPa, and soaked CBR rose from 2.12 to 7.05%. Micro-structural investigations using scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction revealed improved particle bonding, reduced voids, and the formation of a gel-like matrix around soil particles. These findings confirmed the potential of guar gum as an eco-friendly and sustainable alternative to conventional stabilizers such as lime and cement.

Graphical Abstract