Use of Graphene Oxide Nanomaterial to Improve Mechanical Properties of Cement-Treated Silty Soil

Hamza, Muhammad; Rasool, Ali Murtaza; Ali, Umair; Ahmed, Tauqir; Kharal, Zahid Nawaz; Khan, Ammad Hassan; Rehman, Zia ur

doi:10.1007/s13369-022-07530-w

Cited by 19 publications

(3 citation statements)

References 36 publications

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“…The saturation water absorption decreased b 28.3% in comparison to the blank specimen. The inclusion of GO influenced the compa aggregation of crystals, leading to a tendency for further densification and interweavin Therefore, adding GO to the soil-cement matrix resulted in a decrease in the pore volum in the soil sample and the formation of a compact structure [27]. Subsequently, the wate absorption increased rather than decreased with an increase in the content of GO.…”

Section: Effect Of Go Content On the Capillary Water Absorption Of Ce...mentioning

confidence: 99%

Enhancing Water Resistance and Mechanical Properties of Cemented Soil with Graphene Oxide

Lu,

Yan,

Bai

et al. 2024

Materials

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Although cemented soil as a subgrade fill material can meet certain performance requirements, it is susceptible to capillary erosion caused by groundwater. In order to eliminate the hazards caused by capillary water rise and to summarize the relevant laws of water transport properties, graphene oxide (GO) was used to improve cemented soil. This paper conducted capillary water absorption tests, unconfined compressive strength (UCS) tests, softening coefficient tests, and scanning electron microscope (SEM) tests on cemented soil using various contents of GO. The results showed that the capillary water absorption capacity and capillary water absorption rate exhibited a decreasing and then increasing trend with increasing GO content, while the UCS demonstrated an increasing and then decreasing trend. The improvement effect is most obvious when the content is 0.09%. At this content, the capillary absorption and capillary water absorption rate were reduced by 25.8% and 33.9%, respectively, and the UCS at 7d, 14d, and 28d was increased by 70.32%, 57.94%, and 61.97%, respectively. SEM testing results demonstrated that GO reduces the apparent void ratio of cemented soil by stimulating cement hydration and promoting ion exchange, thereby optimizing the microstructure and improving water resistance and mechanical properties. This research serves as a foundation for further investigating water migration and the appropriate treatment of GO-modified cemented soil subgrade.

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Section: Effect Of Go Content On the Capillary Water Absorption Of Ce...mentioning

confidence: 99%

Enhancing Water Resistance and Mechanical Properties of Cemented Soil with Graphene Oxide

Lu,

Yan,

Bai

et al. 2024

Materials

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“…In terms of soil stabilization, Aziz et al [13] reported that adding graphene oxide could improve the compressive strength of cement-stabilized silty soils. Horpibulsuk et al [4] found that the pores in silty clay could be gradually filled with cement-hydrated gels, causing a continuous strength improvement until the hydration reaction ended.…”

Section: Introductionmentioning

confidence: 99%

Stabilization of Fluidic Silty Sands with Cement and Steel Slag

Gu,

Deng,

Zhang

et al. 2023

Buildings

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Fluidic silty sand is often difficult to use directly in engineering construction because of its low strength and plasticity index. This study employed steel slag to replace part of the cement in silty sand stabilization to broaden the feasibility of resource recycling and to reduce the construction cost and carbon emissions in engineering practices. A series of indoor tests investigated the influences of the cement/steel slag ratio, initial water content, curing age, and temperature on the compressive strength of cement- and steel slag-stabilized fluidic silty sands (CSFSSs). Their stabilization mechanism was discussed via microstructural observation and spectral analysis. The results showed that the most economical cement/steel slag ratio could be 9:6, saving 40% of cement and not changing with the initial water content. The compressive strength of the CSFSSs decreased with the initial water content and increased rapidly and then slowly over the curing age. The curing temperature had a positive impact on their strength growth. The microstructure characteristics and spectral analysis showed that adding steel slag indeed affected the formation of gels in the cement-stabilized fluidic silty sands. This study could reference the application of CSFSSs in engineering practices.

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“…Consequently, there is an immediate and compelling need for innovative and sustainable geotechnical solutions for silty soil reinforcement, a topic that is currently the subject of extensive international research. While the use of inorganic additives such as cement, lime fly ash, and lime has been shown to enhance the mechanical and durability properties of silty soils, such treatments often induce brittleness and vulnerability to failure under cyclic or impact loads, leading to various types of cracking [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Reinforcement of Silty Soil via Regenerated Fiber Polymer: A Study on Microscopic Mechanisms

Liu,

Yan,

Liu

2023

Materials

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Utilizing regenerated polyester fibers (RPFs) for the reinforcement of silty road bases not only enhances the soil’s engineering performance but also offers a sustainable method for repurposing waste polyester bottles. To investigate the engineering properties and microscopic behaviors of this reinforced silty soil, a series of extensive physico-mechanical tests were conducted, supplemented by Scanning Electron Microscopy (SEM) analyses. These evaluations focused on the influence of variables such as fiber content, fiber length, moisture content, and curing duration on the modified soil’s performance. The fiber content of the test was 0–1%, and the fiber length was 6–17 mm. The results indicate that curing age had a less significant impact on liquid and plastic limits than the addition of fiber, along with a marginal decline in the plasticity index over time. The rate of shrinkage in the unmodified soil was between 1.04 and 1.45 times higher than that in the fiber-reinforced soil, indicating effective shrinkage control by the fibers. However, variations in maximum dry density (ρdmax) were insignificant across different fiber contents, while a slight increase was observed in the optimum moisture content (OMC) as fiber dosage increased. After a 28-day curing period, the resilient modulus and California Bearing Ratio (CBR) met highway road base design standards. A decline in unconfined compressive strength was noted when the fiber dosage exceeded 0.2%. The addition of fibers mitigated diagonal cracking and shifted the failure pattern towards a more ductile mode. This research contributes scientific insights for the broader application and promotion of silty road base improvement techniques using RPFs.

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Use of Graphene Oxide Nanomaterial to Improve Mechanical Properties of Cement-Treated Silty Soil

Cited by 19 publications

References 36 publications

Enhancing Water Resistance and Mechanical Properties of Cemented Soil with Graphene Oxide

Enhancing Water Resistance and Mechanical Properties of Cemented Soil with Graphene Oxide

Stabilization of Fluidic Silty Sands with Cement and Steel Slag

Reinforcement of Silty Soil via Regenerated Fiber Polymer: A Study on Microscopic Mechanisms

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