Journal Published Online: 10 October 2025
Volume , Issue

Strength and Rheological Behavior of Fiber-Reinforced Loess Treated with Guar Gum Biopolymer

CODEN: JTEVAB

Abstract

To improve engineering properties, eliminate structural defects and enhance the stability of loess. The eco-friendly materials biopolymer and basalt fiber are used as soil stabilizers to treat loess. Microstructural characterization and mechanical evaluations were conducted to assess the viability and reinforcement efficacy of biopolymer-fiber composites in loess stabilization. Guar gum (GG) exerts a notable influence on the stress-strain response of fiber-reinforced loess, whereas the compressive strength demonstrates a progressive enhancement with prolonged curing duration and elevated GG content. When GG = 2.0 %, the settlement of treated loess was the smallest, showing a strong compressive resistance. The rheological properties of GG-modified loess were evaluated through dynamic and static rheological tests, revealing a significant increase in shear stress, viscosity, storage modulus, and loss modulus with elevated GG content. When the shear strain is 10−4∼102 %, the dynamic shear stress changes in the range of 0∼10 kPa. Microstructure analysis shows that the hydrogel produced by GG and fibers combine to form a more tightly "gel-fiber network" system, which maximizes the restriction on the relative displacement of soil particles, thereby enhancing the loess matrix’s mechanical properties and overall structural integrity.

Author Information

Kang, Xin
Key Laboratory of Degraded and Unused Land Consolidation Engineering of the Ministry of Natural Resources, Xi’an City, Shaanxi Province, China Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an City, Shaanxi Province, China
Peng, Yue
College of Water Resource and Architectural Engineering, Northwest A&F University, Xianyang City, Shaanxi Province, China
Zhao, Xiaoxiao
Key Laboratory of Degraded and Unused Land Consolidation Engineering of the Ministry of Natural Resources, Xi’an City, Shaanxi Province, China Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an City, Shaanxi Province, China
Luo, Xianxin
Key Laboratory of Degraded and Unused Land Consolidation Engineering of the Ministry of Natural Resources, Xi’an City, Shaanxi Province, China Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an City, Shaanxi Province, China
Du, Xinxin
College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang City, Shaanxi Province
Sun, Zengchun
College of Water Resource and Architectural Engineering, Northwest A&F University, Xianyang City, Shaanxi Province, China
Pages: 16
Price: $25.00
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Stock #: JTE20240699
ISSN: 0090-3973
DOI: 10.1520/JTE20240699