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Soil Stabilization Using Gum Arabic Biopolymer.

Quadri Olakunle Babatunde1, Yong-Hoon Byun1

  • 1Department of Agricultural Civil Engineering, Kyungpook National University, Daegu, Republic of Korea.

Biopolymers
|December 30, 2025
PubMed
Summary
This summary is machine-generated.

Gum arabic, a biopolymer, effectively stabilizes soil by improving strength and stiffness. This sustainable alternative enhances soil properties through cohesive network formation, offering a promising eco-friendly solution for soil stabilization.

Keywords:
biopolymergum arabicsoil stabilizationstiffnessstrength

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Area of Science:

  • Geotechnical Engineering
  • Materials Science
  • Sustainable Materials

Background:

  • Biopolymer binders are explored as sustainable alternatives for soil stabilization.
  • Gum arabic, a polysaccharide, exhibits gelation properties suitable for soil treatment.

Purpose of the Study:

  • To investigate the efficacy of gum arabic as a soil stabilizer.
  • To analyze the impact of gum arabic on the strength, stiffness, and rheological behavior of various sands.

Main Methods:

  • Gum arabic was incorporated into different sand types at varying concentrations.
  • Rheological analysis, compressive strength tests, and shear wave velocity measurements were conducted.
  • Microscopy was used to examine the microstructure of the treated soil.

Main Results:

  • Rheological analysis showed stable shear stress and viscosity for 24 hours, with behavior varying by biopolymer content.
  • Compressive strength increased significantly (1.3-7.5 MPa) after 28 days of curing.
  • Enhanced stiffness was observed, with higher gum arabic content yielding greater improvements.
  • Microscopy revealed a cohesive network formed by gum arabic hydrogel, reinforcing the soil matrix.

Conclusions:

  • Gum arabic biopolymer effectively stabilizes soil, significantly improving its strength and stiffness.
  • The formation of a cohesive network by gum arabic hydrogel reinforces the soil matrix.
  • Gum arabic presents a viable and sustainable option for soil stabilization applications.