Effects of biopolymers on the liquid limit and undrained shear strength of soft clays

Judge, Pamela K.; Sundberg, Eileen; DeGroot, Don J.; Zhang, Guoping

doi:10.1007/s10064-022-02830-9

Cited by 6 publications

(1 citation statement)

References 23 publications

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“…The molecular structure and polarity of biopolymers have different effects on the mechanical properties of different soils. Judge et al [49] treated soft clay with four biopolymers of different polarity and structure (xanthan gum, guar gum, carrageenan, and dextran), and the test results of the neutral biopolymers guar gum and carrageenan were fundamentally different from those of the anionic xanthan gum and cationic dextran, while anionic biopolymers could better enhance the strength of the soil. The increase in the biopolymer ratio will significantly increase the cohesion of the soil and cause a reduction in the internal friction angle of the soil to improve its strength, and there is an optimal soil-biopolymer ratio, as has been demonstrated by some recent studies.…”

Section: Effects Of Types and Ratios Of Biopolymers On The Mechanical...mentioning

confidence: 99%

A Review on Soils Treated with Biopolymers Based on Unsaturated Soil Theory

Zhang,

Liu

2023

Polymers

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Adding different materials to soil can improve its engineering properties, but traditional materials such as cement, lime, fly ash, etc., have caused pollution to the environment. Recently, biopolymers have shown many advantages, such as economy and environmental protection, which make them applicable to geotechnical engineering. This study summarizes the effects of biopolymers on soil’s engineering properties and the main directions of current research. Firstly, the advantages and disadvantages of a variety of widely used biopolymer materials and their effects on the specific engineering characteristics of soil (i.e., water retention characteristics, strength characteristics, permeability characteristics, microstructure) are introduced, as well as the source, viscosity, pH, and cost of these biopolymers. Then, based on the theory of unsaturated soil, the current research progress on the water retention characteristics of improved soil is summarized. The key factors affecting the strength of biopolymer-treated soil are introduced. Due to the actual environmental conditions, such as rainfall, the permeability and durability of biopolymer-treated soil are also worthy of attention. In summary, it is necessary to study the variation laws of the engineering properties of biopolymer-treated soil in the full suction range, and to predict such laws reasonably. The relevant results are conducive to the safer and more scientific application of biopolymers in geotechnical engineering practice.

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Section: Effects Of Types and Ratios Of Biopolymers On The Mechanical...mentioning

confidence: 99%