Physical and geotechnical properties of cement-treated clayey soil using silica nanoparticles: An experimental study

Ghasabkolaei, Navid; Janalizadeh, A.; Jahanshahi, Mohsen; Roshan, Nader; Ghasemi, S. E.

doi:10.1140/epjp/i2016-16134-3

Cited by 70 publications

(15 citation statements)

References 17 publications

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“…e dry soil and additives (lime and nanospheres) were stirred with about 50% of the total amount of water needed to obtain the optimum moisture content. After that, the soil and admixture were mixed manually and the remaining water was added to bring the sample to the [28] Soft high-plasticity clay Lime, GGBS 7, 28, 90 UCS, MIP Ghorbani et al [22] Sulfate silty sand Lime, micro-SiO 2 7, 28 UCS, CBR Choobbasti et al [29] Sandy soil Cement, nano-SiO 2 7 UCS Bahmani et al [30] High-plasticity clay soil Cement, nano-SiO 2 7, 14, 28 UCS Ghasabkolaei et al [31] High-plasticity clay soil Cement, nano-SiO 2 7, 14, 28 UCS, CBR Yoobanpot et al [32] Soft high-plasticity clay Cement, fly ash residue 3, 7, 28, 90 UCS Alnahhal et al [33] Sand OPC, CKD, nano-CKD 7, 28, 56 UCS García et al [34] Soft high-plasticity clay Nano-SiO 2 -UCS Sharma et al [25] High-plasticity clayey sand Lime, cement 1, 3, 7, 14, 21, 28 UCS, shear strength Abbasi et al [35] Dispersive high-plasticity clayey soils Nano-high-plasticity clay 1, 3, 7 Pinhole Choobbasti et al [36] Sand Cement, nano-SiO 2 7 UCS, triaxial [46], the soil, additives, and water were mixed with different proportions and then compacted into a mould in three layers with 25 blows/layer. e mould had a height and diameter of 9.8 and 4.9 cm, respectively.…”

Section: Sample Preparation Processmentioning

confidence: 99%

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Effect of Selected Nanospheres on the Mechanical Strength of Lime‐Stabilized High‐Plasticity Clay Soils

Ghorbani

Hasanzadehshooiili

Mohammadi

et al. 2019

Advances in Civil Engineering

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The proper design of protective structures may start from improving the characteristics of soils. In order to obtain reasonable safety criteria, several research studies have recently been dedicated to enhancing complex civil engineering structural systems with the use of nanotechnology. Thus, the following paper investigates the effect of nanospheres, including nanosilica (nano-SiO2) and nano zinc oxide (nano-ZnO), on lime-stabilized high-plasticity clay soil. For this purpose, unconfined compressive strength (UCS) and California bearing ratio (CBR) tests were performed on samples. The results showed that the use of the selected nanospheres greatly increased the UCS of the samples compared to untreated soil. The UCS value of samples containing 6% lime and 1.5% nano-ZnO after 28 days of treatment increased by 5-fold compared to the UCS of untreated samples. In addition, the samples containing 6% lime and 2% nano-SiO2, with similar curing conditions, experienced a 5.3-fold increase in their UCS value compared to the untreated samples. These compounds were considered as the optimal amounts and showed the highest mechanical strength in both UCS and CBR tests. The same trend was achieved in the CBR test, in which the CBR value for the optimal mixtures containing nano-ZnO and nano-SiO2 was 14.8 and 16.6 times higher than that of high-plasticity clay soil, respectively. Finally, the results obtained from scanning electron microscopy (SEM) analysis revealed that the nanospheres caused a dense and compact matrix to form in the soil, which led to the enhancement of the mechanical strength of the treated samples.

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Section: Sample Preparation Processmentioning

confidence: 99%

“…Nanodimension stabilizers are highly effective in soil stabilization from both physical and chemical viewpoints. Nanospheres have a particularly high specific surface area and are therefore more involved in chemical reactions [31]. Moreover, the very fine particles of nanospheres may improve the characteristics of soil [37].…”

Section: Introductionmentioning

confidence: 99%

Effect of Selected Nanospheres on the Mechanical Strength of Lime‐Stabilized High‐Plasticity Clay Soils

Ghorbani

Hasanzadehshooiili

Mohammadi

et al. 2019

Advances in Civil Engineering

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“…Moreover, CO 2 produced by cement production accounts for 5-7% of the total amount of human-generated CO 2 [8]. Therefore, in order to reduce the dosage of cement and CO 2 emissions, many scholars have found suitable materials and methods to further improve cement soil on the basis of adding new engineering materials as a curing agent [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Influence of Carbonization Process on the Mechanical Properties of Nano-MgO Modified Cement Soil

Wang

Zhou

et al. 2021

Sustainability

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In order to explore the modification effect of carbonization time on nano-MgO-modified cement soil, unconfined compressive strength tests of nano-MgO-modified cement soil with carbonization times of 0 h, 6 h, 1 d, 2 d and 4 d were carried out. A method for normalizing the stress–strain curve was proposed, and the influence of nano-MgO content and carbonization time was investigated from the three aspects of compressive strength, peak strain and energy dissipation. The test results show the following: (1) The compressive strength of the modified cement soil can be significantly improved by adding 1.0% nano-MgO and after 1 d carbonization. (2) Under the same nano-MgO content, the peak strain of the modified cement soil after 2 d carbonization reaches the maximum, which can significantly increase its ductility. However, the nano-MgO content has little influence on the peak strain of the modified cement soil. (3) Under the same nano-MgO content, the energy dissipation rate of the modified cement soil after 1 d carbonization reaches the maximum, which can better resist the damage of external load.

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“…Ghasabkolaei [28] performed SEM image analysis on the cemented soil mixed with and without nanosilicon powder, and the results demonstrated that the cemented soil mixed with nanosilicon power was more uniform and denser than the ordinary cemented soil. Moreover, the UCS of uniformly dense cement soil mixed with nanosilicon powder is high.…”

Section: Introductionmentioning

confidence: 99%

The Time Effect and Micromechanism of the Unconfined Compressive Strength of Cement Modified Slurries

Jiang

Chen

Zhou

et al. 2021

Advances in Materials Science and Engineering

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This study investigated the unconfined compressive strength change law of cement modified slurries (CMS) under different curing ages. We conducted unconfined compressive strength tests using slurry and cement as raw materials. The cement contents were 5%, 10%, 15%, 20%, and 25%. The curing ages were 7, 14, 28, 56, 90, 120, 150, and 180 d. A time effect model of CMS strength was established based on the measured UCS strength-curing age and the strength-cement content curves. The test results proved that the UCS of the CMS increased significantly with an increase in the curing age, and after 90 days, the UCS gradually increased to a fixed value. The time effect model better characterized the relationship between the UCS of the CMS and the curing age and the cement content, as the predicted value had a high correlation with the measured value. We conducted scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and X-ray diffraction (XRD) tests to analyze the microstructure and chemical composition of the CMS. The microscopic test results demonstrated that the increase of cement content and curing age increased the amount of gelling substances in the CMS and made the overall structure more compact, thereby increasing its macro strength.

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Physical and geotechnical properties of cement-treated clayey soil using silica nanoparticles: An experimental study

Cited by 70 publications

References 17 publications

Effect of Selected Nanospheres on the Mechanical Strength of Lime‐Stabilized High‐Plasticity Clay Soils

Effect of Selected Nanospheres on the Mechanical Strength of Lime‐Stabilized High‐Plasticity Clay Soils

Influence of Carbonization Process on the Mechanical Properties of Nano-MgO Modified Cement Soil

The Time Effect and Micromechanism of the Unconfined Compressive Strength of Cement Modified Slurries

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