Cohesive Soil Stabilized Using Sewage Sludge Ash/Cement and Nano Aluminum Oxide

Luo, Huan-Lin; Hsiao, Da-Hung; Lin, Deng-Fong; Lin, Cong-Kai

doi:10.1260/2046-0430.1.1.83

Cited by 74 publications

(20 citation statements)

References 8 publications

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“…They concluded that the addition of nano-Al2O3 to the soil decreases both the values of expansive and shrinkage strains. In a study conducted by Luo et al (2012), the addition of nano-Al2O3 to the soil reduces the maximum dry unit weight and increases the optimum moisture content, and the addition of different amounts of nano-Al2O3 to treated soil reduces the plasticity index values.…”

Section: Introductionmentioning

confidence: 99%

Strength properties of soft clay treated with mixture of nano-SiO2 and recycled polyester fiber

Changizi

Haddad

2015

Journal of Rock Mechanics and Geotechnical Engineering

142

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Please cite this article as: Changizi F, Haddad A, Strength properties of soft clay treated with mixture of nano-SiO 2 and recycled polyester fiber, Abstract: This paper investigates the effect of recycled polyester fiber, produced from polyethylene (PET) bottles, in combination with nano-SiO2 as a new stabilizer to improve the mechanical properties of soils. We intend to study the effect of adding nano-SiO2 and recycled polyester fiber on soil engineering properties, especially the shear strength and unconfined compressive strength (UCS), using clayey soil with low liquid limit. Three different combinations of fiber-soil ratios ranging between 0.1% and 0.5% as well as three different combinations of nano-soil ratios ranging between 0.5% and 1% are used. The shear strength and UCS of treated specimens are obtained from direct shear test and unconfined compression test, respectively. Results of this study show that the addition of recycled polyester fiber and nano-SiO2 increases the strength of soil specimens. Both the shear strength and UCS are improved by increasing the contents of recycled polyester fiber and nano-SiO2 in the soil mixture. The increase in the nano-SiO2 content leads to a reduction in failure strain, but the increase in the content of recycled polyester fiber leads to an increase in failure strain. The increase in the contents of recycled polyester fiber and nano-SiO2 leads to an increase in elastic modulus of soils. Based on the test results, the addition of recycled polyester fiber improves the mechanical properties of soils stabilized with nano-SiO2 as well as the recycled polyester fiber has a positive effect on soil behaviors.

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Section: Introductionmentioning

confidence: 99%

Strength properties of soft clay treated with mixture of nano-SiO2 and recycled polyester fiber

Changizi

Haddad

2015

Journal of Rock Mechanics and Geotechnical Engineering

142

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“…Furthermore, the production of cements raises several environmental concerns, including high carbon dioxide emission, dust generation, and source material depletion (Bosoaga et al 2009;Fatehi et al 2018). In recent years, application of nanomaterials to enhance the hydromechanical behaviour of fine-grained soils with less environmental drawbacks has received increasing attention (Luo et al 2012;Taha and Taha 2012;Iranpour et al 2016;Bahmani et al 2014;Latifi et al 2015;Latifi et al 2016). Among various nano-sized additives such as copper, alumina, and silica particles, mixing clay nanoparticles with soils is reported to decrease the soil collapse potential, giving rise to a sustainable and environmentally friendly soil stabiliser (Iranpour et al 2016;Latifi et al 2016;Latifi et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Improving mechanical behaviour of collapsible soils by grouting active clay nanoparticles

Seiphoori¹,

Zamanian²

2020

Preprint

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The primary geotechnical concern of collapsible soils such as loess is their hydromechanical instability. During (re)wetting, metastable aggregates disintegrate leading soil to collapse under the applied load or self-weight. In situ chemical stabilisation, such as grouting, is a favoured option to improve the mechanical behaviour of soils; however, the low permeability of loess limits the application of permeation grouting in such deposits. Here a new approach is presented based on the injection of dilute suspensions of montmorillonite clay nanoparticles to improve mechanical behaviour of a low permeable loess. In addition to clay, the grouting behaviour of an ordinary cement material was also evaluated as a typically favoured soil stabiliser. Reconstituted specimens were also prepared by mixing dry clay or cement particles with soil at similar contents and curing time to allow a comparison with the grouting method. Results revealed that clay suspensions feature a high-mobility in the soil medium as well as a remarkable performance in reducing the collapse potential due to: (1) clay effective particle size (∼ 0.25 m) that facilitates its mobility in soil, and (2) formation of strong, capillary-driven solid bridges that reinforce the interparticle bonds during post grouting evaporation. These results encourage the application of clay nanoparticles over cements for a sustainable, economical and eco-friendly grouting approach to improve the mechanical behaviour of low permeable collapsible soils.

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“…Taha et al [4] studied the influence of nano-soil, nano-alumina and nano-copper oxide on the liquid and plastic limit of residual soil, and the results showed that nano-soil can significantly improve the plastic index of residual soil. Luo et al [5] found that adding different amount of nano-alumina can reduce the plasticity index of soil. Pham et al [6] found that in the presence of electrolyte, PEG coated silica nano-particles had a positive effect on the inhibition of clay swelling.…”

Section: Introductionmentioning

confidence: 99%

Study on electro-osmotic consolidation of bentonite reinforced by nano-montmorillonite

et al. 2020

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In order to study the effect of nano-montmorillonite on the electro-osmotic consolidation of bentonite, four groups of electro-osmotic consolidation tests were carried out with different content of nano-montmorillonite (0‰, 1‰, 2‰ and 3‰), and the change rules of current, potential, drainage, water content, pH value and shear strength were analyzed. The results showed that the current, potential and drainage rate decreased with the increase of time. After 48 hours, the current of T2 decreased by 91.23%, which has the lowest decrease rate. Meanwhile, T2 has the largest total discharge and lowest water content. With the distance increasing from anode, the pH value increased, while the shear strength decreased. The research results indicated that nano-montmorillonite has a significant effect on the consolidation of bentonite.

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Cohesive Soil Stabilized Using Sewage Sludge Ash/Cement and Nano Aluminum Oxide

Cited by 74 publications

References 8 publications

Strength properties of soft clay treated with mixture of nano-SiO2 and recycled polyester fiber

Strength properties of soft clay treated with mixture of nano-SiO2 and recycled polyester fiber

Improving mechanical behaviour of collapsible soils by grouting active clay nanoparticles

Study on electro-osmotic consolidation of bentonite reinforced by nano-montmorillonite

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