Study on the Compounding of Xanthan Gum and Guar Gum and Joint Soil Consolidation Performance with Roots

Juan  Wan; Chenyang  Liu; Henglin  Xiao; Weiqing  Lin; Zhonggeng  Tang; Yunlong  Jia

doi:10.6180/jase.202511_28(11).0020

Study on the Compounding of Xanthan Gum and Guar Gum and Joint Soil Consolidation Performance with Roots

Juan Wan^1,2, Chenyang Liu¹, Henglin Xiao^1,2, Weiqing Lin¹This email address is being protected from spambots. You need JavaScript enabled to view it., Zhonggeng Tang¹, and Yunlong Jia¹

¹School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan, 430068, China

²Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes, Ministry of Education, Hubei University of Technology, Wuhan 430068, China

Received: December 10, 2024
Accepted: March 3, 2025
Publication Date: March 25, 2025

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202511_28(11).0020

Biopolymers are widely used as eco-friendly soil additives for soil stabilization. The combined use of biopoly-mersoffers potential for enhancing soil performance, but research on their mixed effects on plant growth and soil mechanics is limited. This study utilizes xanthan gum and guar gum to prepare composite gum. Experiments on plant growth, mechanical properties test, and scanning electron microscopy (SEM) are conducted to explore the impact of the composite gum on the plant growth and mechanical properties of clay, as well as its ability to stabilize soil in conjunction with root systems. The experimental results reveal that optimal dosages of xanthan gum(2%), guar gum (1.5%), and composite gum (1%) significantly improve the planting performance of clay, while excessive dosages inhibit the effects. Composite gum demonstrates superior performance in enhancing clay shear strength by increasing cohesion. For substrates with roots, 1% composite gum achieves the best synergy with plant roots, increasing cohesive strength by 255.2% and shear strength by 70.2% compared to pure clay. Compared with xanthan gum and guar gum, composite gum improves shear strength by 11% and 2.2%, respectively. SEM analysis shows that the incorporation of biopolymers significantly enhances mechanical properties of clay through mechanisms such as physical adsorption, optimization of particle arrangement, and molecular chain interactions. The experimental results reveal the relationship between the improved planting and mechanical properties of the modified clay and the internal microstructural changes. This provides a reference for further exploration of new eco-friendly ecological slope protection materials.

Keywords: Xanthan gum; Guar gum; Root-soil coupling; Plant growth test; Direct shear test

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