Impact of Biocompatible Nanosilica on Green Stabilization of Subgrade Soil

Buazar, Foad

doi:10.1038/s41598-019-51663-2

Cited by 58 publications

(17 citation statements)

References 33 publications

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“…The different approaches of green synthesis make use of resources such as microbial systems, plant systems, and biological materials. The demand for green synthesis keeps on increasing since the production of nanoparticles is costeffective and eco-friendly [3,4]. The synthesis of metallic nanoparticles by green route is gaining attention due to the growing microbial resistance of disease-causing microorganisms against antibiotics and metal ions.…”

Section: Introductionmentioning

confidence: 99%

Optical and antimicrobial properties of silver nanoparticles synthesized via green route using honey

Kumar¹,

Madhu²,

John³

et al. 2020

Green Processing and Synthesis

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AbstractAmong the various green synthesis methods for nanoparticle synthesis, the honey-mediated green synthesis of nanoparticles is a fast, safe, biocompatible, and cost-effective method. In the present work, we demonstrate the sunlight-induced honey-mediated synthesis of silver nanoparticles and report the effect of light intensity, its color, and exposure time on the formation of nanoparticles. The visual inspection followed by UV-Vis spectral studies was performed to confirm the formation of silver nanoparticles. The HRTEM measurement confirms the formation of polydispersed silver particles. We further report the excellent antimicrobial activity of the synthesized nanoparticles against various strains of bacteria, which is found to be comparable to that of the antibiotic drug of choice. Our study points to further research on the possibility of considering these green synthesized silver nanoparticles as an alternative to antibiotics.

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Section: Introductionmentioning

confidence: 99%

Optical and antimicrobial properties of silver nanoparticles synthesized via green route using honey

Kumar¹,

Madhu²,

John³

et al. 2020

Green Processing and Synthesis

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“…He showed that the addition of nanosilica stabilizer up to 1.5 % provides the highest amount of the dry density, cohesion, friction angle and CBR value for the subgrade soil which is probably due to the appropriate replacement of nanosilica additive with air in soil pores. An increase in the weight of silica nanoparticles over an optimal of 1.5 % leads to a decrease in the soil parameters as a result of the accumulation and agglomeration of silica (Buazar, 2019). It should be noted that using a high content of nanomaterials such as 10 % (by the weight of base soil) must be accompanied by new mixing methods (which may be introduced in future and do not cause agglomeration) or using some dispersing agents (As it is well known, the agglomeration phenomenon happens in mixing nanoparticles with many materials such as soil, concrete and etc.…”

Section: Unconfined Compressive Strengthmentioning

confidence: 99%

Durability assessment of soft clay soil stabilized with halloysite nanotubes

Tavakolipour¹

2021

Acta Geodynamica Et Geomaterialia

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In this study the compressive strength and durability of soft clay soil stabilized with halloysite nanotubes are investigated. Halloysite nanotubes are novel 1D natural nanomaterials which are widely used in reinforcing polymer, pollution remediation, and as nanoreactors for biocatalyst. The wide use of halloysite nanotubes is due to their high aspect ratio, appropriate mechanical strength, high thermal stability, nature-friendly and cost-effectiveness. However, the use of halloysite nanotubes as a stabilizing agent for improving the durability of soil is not clear. In this research, halloysite nanotubes was used in the amounts of 2 %, 5 % and 10 % by the weight of dried soil. Unconfined compressive strength, wet/dry cycles and freeze/thaw cycles tests were performed to evaluate the strength and durability of stabilized soft clay soil. Experimental results showed that halloysite nanotubes considerably improves the compressive strength and durability of soft clay soil. The optimum amount of halloysite nanotubes for soil stabilizing in terms of compressive strength and durability was 5 %. The compressive strength of soft clay increased as much as 129 % by applying 5 % halloysite nanotubes. Also, the specimen containing 5 % halloysite nanotubes showed the least strength loss after wet/dry and freeze/thaw cycles. The soil sample containing 5 % halloysite nanotubes lost 20 % of its initial compressive strength after 8 cycles of freezing and thawing, while the soil sample without any halloysite content lost 100 % of its compressive strength after the same number of freezing and thawing. Based on the obtained results, the use of halloysite nanotubes in order to enhance the strength and durability of soft clay is strongly recommended.

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“…For the overall result, for the lime, three studies from [7], [9], and [21] shows the plasticity classification for untreated soil change from high plastic to slightly plastic when the lime was added into the soil while for the other result remains unchanged. For result from [13] and [18] change from high plastic to medium plastic, for the result from [22] that change from medium plastic to slightly plastic, for the result from that change from medium plastic to high plastic and for the result from from [29] was changed from slightly plastic to medium plastic. For the medium plastic result, only the result when added the fly ash shows the increase of plastic classification, which is from medium to high plastic.…”

Section: 1 Basic Datamentioning

confidence: 99%

Review on Soil Improvement by Using Various Chemical Additives for Foundation

Khalid

Siang

2021

J-SUE

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This work aimed to study the most effective chemical additives to increase the strength of the clay soil. The problem statement is to improve the soil strength to avoid failure in the ground. The chemical additives that be used are lime, cement, and fly ash. These chemical additives were commonly used to stabilize the soil and make the shear strength of the soil increase. The data taken was from the previous research, where the data was compared to get the most effective chemical additives to improve the soil stability and soil strength. The percentage of the chemical additive used in the soil mixture was 8% to 10%. The data from previous research was chosen based on the rate used of the chemical additive and the research was taken from Science Directed website only. Data were collected through 30 previous studies using clay and chemical additives such as cement, lime, and fly ash. The data for Plastic Limit, Liquid Limit, Plasticity Index, Optimum Moisture Content, Maximum Dry Density, and Unconfined Compressive Strength was taken by referring to the previous study. Then the data was listed in Microsoft Excel to generate the graph for comparison. All the data obtained are then compared to get which chemicals can increase the strength of the soil. The result of this study shows that the cement was the most effective chemical additive to improve the soil strength and to stabilize the soil than the lime and fly ash.

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Impact of Biocompatible Nanosilica on Green Stabilization of Subgrade Soil

Cited by 58 publications

References 33 publications

Optical and antimicrobial properties of silver nanoparticles synthesized via green route using honey

Optical and antimicrobial properties of silver nanoparticles synthesized via green route using honey

Durability assessment of soft clay soil stabilized with halloysite nanotubes

Review on Soil Improvement by Using Various Chemical Additives for Foundation

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