Stabilization of a soft marine clay using halloysite nanotubes: A multi-scale approach

Emmanuel, Endene; Lau, Chun Chern; Anggraini, Vivi; Pasbakhsh, Pooria

doi:10.1016/j.clay.2019.03.014

Cited by 47 publications

(30 citation statements)

References 60 publications

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“…The reduction in Atterberg limits of treated soils led to the transition of soil plasticity classification from high plasticity clay to intermediate plasticity clay. This transition indicates an improvement in the workability of soil, making the soil easier to compact [12].…”

Section: Discussionmentioning

confidence: 97%

Stabilization of a Residual Soil Using Calcium and Magnesium Hydroxide Nanoparticles: A Quick Precipitation Method

et al. 2019

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The current study examines the potential of using calcium and magnesium hydroxide nanoparticles synthetized through a quick precipitation method as soil stabilizers for improving the engineering properties of tropical residual soil. The engineering properties of untreated and nanoparticles-treated soil were studied by carrying out a series of geotechnical tests including compaction, Atterberg limits, falling head permeability, and unconfined compressive strength (UCS). The stabilization mechanisms associated with soil–chemical reactions were further explored by performing microstructural analyses such as x-ray diffraction (XRD), variable-pressure scanning electron microscope (VP-SEM), and energy-dispersive x-ray spectroscopy (EDX). The findings revealed that the calcium hydroxide and magnesium hydroxide nanoparticles improved the geotechnical properties of residual soils in terms of reduced hydraulic conductivity and increased UCS. The percentage reduction of the hydraulic conductivity of magnesium and calcium hydroxide nanoparticles-treated soils compared to untreated soil after seven weeks of permeation were 85.14% and 98.70%, respectively. The magnesium and calcium hydroxide nanoparticles-treated soils subjected to 14 days of curing recorded a percentage increase in the UCS of 148.05% and 180.17%, respectively compared to untreated soil. Hence, it can be concluded that both magnesium and calcium hydroxide nanoparticles can be effectively utilized as environmental-friendly stabilizers.

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Section: Discussionmentioning

confidence: 97%

Stabilization of a Residual Soil Using Calcium and Magnesium Hydroxide Nanoparticles: A Quick Precipitation Method

et al. 2019

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“…Halloysite nanotubes (HNTs) are a type of naturally occurring silicates in the form of hollow tubular nanostructures, which resemble the structure of multiwall CNTs . HNTs are composed of a multiple layer structure, with the inner surface of gibbsite octahedral sheet (Al‐OH) groups and the external surface of siloxane (Si‐O‐Si) groups . And their structure can be expressed with the formula Al 2 Si 2 O 5 (OH) 4 ·nH 2 O.…”

Section: Introductionmentioning

confidence: 99%

Chemical modification of carbon fiber with diethylenetriaminepentaacetic acid/halloysite nanotube as a multifunctional interfacial reinforcement for silicone resin composites

Zheng

Wang

2019

Polymers for Advanced Techs

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In the present research, a multifunctional hierarchical reinforcement was prepared by chemical modification of carbon fibers (CFs) with halloysite nanotubes (HNTs) by the bridging diethylenetriaminepentaacetic acid (DTPA) for improving interfacial microstructures and properties of composites. Surface structures and groups of modified HNTs and CFs were characterized systematically. The uniform distributions of the introduced DTPA and HNTs helped to increase fiber polarity, surface energy, and wettability. As a consequence, significant enhancements of interfacial properties and hydrothermal aging resistance of composites were achieved, and interfacial reinforcing mechanisms have also been studied. Moreover, the storage modulus showed a 17.95% improvement, and the glass transition temperature was enhanced by 17°C by dynamic mechanical analysis testing.

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“…Therefore, nanoparticles additives due to their unique characteristics are proposed as an emergent alternative stabilizer to overcome at least some of the detriments of traditional soil stabilization approaches 13,14 . Previous studies have demonstrated that nanoscale particles lead to tangible changes to mechanical, physical, and chemical properties of treated soil 15–18 . For instance, Fe 2 O 3 nanoparticles is employed as filling agents to bundle the pores and strengthen concrete.…”

Section: Introductionmentioning

confidence: 99%

Impact of Biocompatible Nanosilica on Green Stabilization of Subgrade Soil

Buazar

2019

Sci Rep

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This study reports the synthesis and potential application of biocompatible silica nanoparticles for subgrade soil stabilization. Nanosilica preparation as a major component from wheat husk ash is systematically studied and confirmed by FTIR, ICP, XRD, and TEM analyses. The produced biogenic nanosilica showed an amorphous structure with an average size of 20 nm. Upon loading various green nanosilica contents, our results show an improvement in the key parameters including Atterberg’s limits, maximum dry density, optimum water content, and shear strength of treated soil. Under optimal loading condition, the nanosilica-mediated soil analyses reveal a significant increase in the plastic and liquid limits by factors of 1.60 and 1.24 whereas plasticity index is declined by a factor of 0.78 rather than untreated soil specimen. The treated soil demonstrates a superior increase in the angle of internal friction, cohesion, shear strength, and maximum dry unit weight by factors of 2.17, 3.07, 2.21 and 1.5, respectively. The California Bearing Ratio (CBR) strength of nanosilica-cured soil presents a substantial increase by a factor of 5.83 higher than the corresponding original subgrade soil. We obtained the maximum increase in strength parameters of modified soil at the optimum biogenic nanosilica content of 1.5%.

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Stabilization of a soft marine clay using halloysite nanotubes: A multi-scale approach

Cited by 47 publications

References 60 publications

Stabilization of a Residual Soil Using Calcium and Magnesium Hydroxide Nanoparticles: A Quick Precipitation Method

Stabilization of a Residual Soil Using Calcium and Magnesium Hydroxide Nanoparticles: A Quick Precipitation Method

Chemical modification of carbon fiber with diethylenetriaminepentaacetic acid/halloysite nanotube as a multifunctional interfacial reinforcement for silicone resin composites

Impact of Biocompatible Nanosilica on Green Stabilization of Subgrade Soil

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