Geomechanics and Engineering

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Effect of Xanthan gum biopolymer combined with fibre as soil- stabilization binder of dune sand in Southern Algeria

  • Benathmane Baghdir (NEIGE Laboratory, Civil Engineering Department, Saad Dahleb university) ;
  • Younes Abed (NEIGE Laboratory, Civil Engineering Department, Saad Dahleb university) ;
  • Sadok Feia (Research Laboratory of Civil Engineering, Civil Engineering Department, Biskra University) ;
  • Sidali Denine (Civil Engineering Department, Center University of Tipaza) ;
  • Turgay Beyaz (Department of Geological Engineering, School of Engineering, Pamukkale University) ;
  • Achref Cherifi (Industrial Technology Research Center, Additive Manufacturing Research Unit)
  • Received : 2023.12.22
  • Accepted : 2024.09.30
  • Published : 2024.10.25
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Abstract

Biopolymer treatment of geomaterials is a promising technology with green technology potential that can help reduce global warming. It offers a positive environmental impact and a wide range of applications. This paper reports the results of a study of the mechanical performance of biopolymer-treated dune-sand from the Algeria desert. The sand was mixed with varying amounts of xanthan gum biopolymer and reinforced with polypropylene fibre. The study demonstrated that xanthan gum treatment improved the Unconfined Compressive Strength (UCS) of unreinforced sand and fibre-reinforced sand. Nonetheless, the test results revealed that biopolymer-treated sand manifested higher resistance after drying. Based on the findings, the optimal quantity of xanthan gum for treating sand is 2%. The incorporation of fibre in the matrix increases the strength and failure strain. The Scanning Electron Microscopy (SEM) analysis further substantiated that the biopolymer bonds the sand particles together and the distribution of PP fibre in the mixture, thereby enhancing compressive strength and durability. The results indicate that using xanthan gum biopolymer treatment offers an environmentally friendly approach to enhancing the mechanical properties of desert sand.

Keywords

Acknowledgement

The authors would like to express their gratitude to the directorate general for scientific research and technological development (DGRSDT) for supporting this research. They also wish to acknowledge the invaluable assistance of the staff at the Soil Mechanics Laboratory in Mohamed Khider university, and thank Pr. Kamil Kayabali from Ankara university for his efforts and guidance throughout the research.

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