Use of xanthan and guar gums in soil strengthening

Dehghan, Hasan; Tabarsa, Alireza; Latifi, Nima; Bagheri, Younes

doi:10.1007/s10098-018-1625-0

Cited by 135 publications

(52 citation statements)

References 36 publications

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“…These findings are consistent with previous research studies of biopolymer-treated soil under triaxial loading conditions showing that biopolymers can increase the peak deviatoric stress 40,[42][43][44][45][46] . On the other hand, Karimi 47 showed that the maximum deviatoric stress of 1% XG-treated silt can decrease in the period between five and 30 days.…”

Section: Resultssupporting

confidence: 93%

Biopolymers as a sustainable solution for the enhancement of soil mechanical properties

Soldo

Miletić

Auad

2020

Sci Rep

166

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improving soil engineering properties is an inevitable process before construction on soft soil. increasing soil strength with chemical stabilizing agents, such as cement, raises environmental concerns. therefore, sustainable solutions are in high demand. one of the promising solutions is the usage of biopolymers. Five biopolymer types were investigated in this study: Xanthan Gum, Beta 1,3/1,6 Glucan, Guar Gum, Chitosan, and Alginate. Their effect on the soil strength improvement was experimentally investigated by performing unconfined compression, splitting tensile, triaxial, and direct shear tests. All tests were performed with different biopolymer concentrations and curing periods. Additionally, in order to have an insight on the susceptibility to natural elements, plain soil, and biopolymertreated specimens were exposed to real atmospheric conditions. The extensive experimental results showed that the soil strength tends to increase with the increase of biopolymer concentration and with the curing time. However, it was shown that the soil strength does not considerably change after a certain biopolymer concentration level and curing time. furthermore, it has been observed that the biopolymer-treated specimens showed better resistance to the influence of the environmental conditions. In general, Xanthan Gum, Guar Gum, and Beta 1,3/1,6 Glucan showed the most dominant effect and potential for the future of sustainable engineering.

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Section: Resultssupporting

confidence: 93%

Biopolymers as a sustainable solution for the enhancement of soil mechanical properties

Soldo

Miletić

Auad

2020

Sci Rep

166

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“…Another relevant factor emphasized in research studies is the curing time effect, especially related to permeability tests of xanthan gum-treated soil mixtures. Bouazza et al [44], Dehghan et al [45] and Cabalar et al [31] have also stated that the permeability increases proportionally to the curing time, but this increase rate can change according to the soil type and xanthan gum concentration. This permeability rate increase is due to dehydration that causes shrinkage of the biopolymer matrices inside the gaps in the soil [25,26].…”

Section: Permeabilitymentioning

confidence: 99%

A Review on the Importance of Microbial Biopolymers Such as Xanthan Gum to Improve Soil Properties

et al. 2020

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Chemical stabilization of soils is one of the most used techniques to improve the properties of weak soils in order to allow their use in geotechnical works. Although several binders can be used for this purpose, Portland cement is still the most used binder (alone or combined with others) to stabilize soils. However, the use of Portland cement is associated with many environmental problems, so microbiological-based approaches have been explored to replace conventional methods of soil stabilization as sustainable alternatives. Thus, the use of biopolymers, produced by microorganisms, has emerged as a technical alternative for soil improvement, mainly due to soil pore-filling, which is called the bioclogging method. Many studies have been carried out in the last few years to investigate the suitability and efficiency of the soil–biopolymer interaction and consequent properties relevant to geotechnical engineering. This paper reviews some of the recent applications of the xanthan gum biopolymer to evaluate its viability and potential to improve soil properties. In fact, recent results have shown that the use of xanthan gum in soil treatment induces the partial filling of the soil voids and the generation of additional links between the soil particles, which decreases the permeability coefficient and increases the mechanical properties of the soil. Moreover, the biopolymer’s economic viability was also analyzed in comparison to cement, and studies have demonstrated that xanthan gum has a strong potential, both from a technical and economical point of view, to be applied as a soil treatment.

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“…For instance, Sujatha et al (2020) showed that xanthan gum (XG) biopolymer forms an interconnected network between the biopolymer molecules and soil surface, which results in a decrease in permeability and increase in strength. The interconnected network also resists compaction, resulting in a lower maximum dry density and higher optimal moisture content (Dehghan et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of Pore–Fluid Chemistry on the Undrained Shear Strength of Xanthan Gum Biopolymer-Treated Clays

Chang

Kwon

Cho

2021

J. Geotech. Geoenviron. Eng.

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Xanthan gum (XG) biopolymer-based soil treatment is an effective soil improvement method. In this study, we explored the effect of XG on the undrained shear strength of clays (kaolinite and montmorillonite) in chemically distinct pore fluids. Among the pore fluids tested, the undrained shear strength of kaolinite was the highest in kerosene, followed by deionized (DI) water and brine. This study hypothesized that the interparticle forces and interactions dominated the undrained shear strength of the kaolinite clay. In contrast, montmorillonite showed the highest undrained shear strength with DI water, followed by brine and kerosene, likely due to the increase in thickness of the viscous double layer that reduced the undrained strength of the montmorillonite clay. XG also affected the undrained shear strength of the clays, possibly due to the increase in viscosity of the pore fluids and modification of the clay interparticle fabrics. In DI water, XG increased the undrained shear strength of kaolinite (maximum shear strength was observed in the sample with an XG-to-soil mass ratio of 0.5%) via water absorption. Simultaneously, XG decreased the undrained shear strength of montmorillonite, likely due to XG-induced particle aggregation resulting from the changes in the montmorillonite particle surface charges. In 2-M-NaCl brine, the undrained shear strength increased with the increase in XG content, regardless of the mineral types, owing to the salt-induced double-layer compression and increase in concurrent XG-induced pore-fluid viscosity. However, the unaffected and constant undrained shear strength of both clays in nonpolar kerosene suggests that hydrating XG is a prerequisite for its application in soil treatment.

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Use of xanthan and guar gums in soil strengthening

Cited by 135 publications

References 36 publications

Biopolymers as a sustainable solution for the enhancement of soil mechanical properties

Biopolymers as a sustainable solution for the enhancement of soil mechanical properties

A Review on the Importance of Microbial Biopolymers Such as Xanthan Gum to Improve Soil Properties

Effect of Pore–Fluid Chemistry on the Undrained Shear Strength of Xanthan Gum Biopolymer-Treated Clays

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