Effect of Nanosilica on the Mechanical and Physical Soil Characteristics

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Hosseini Mohammad Saeid; Amirinejad Aliashraf

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Journal Paper

Paper Information

Journal: JOURNAL OF WATER AND SOIL SCIENCE Year:2025 | Volume:29 | Issue:4 Page(s): 154-163

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Information Journal Paper

Title

Effect of Nanosilica on the Mechanical and Physical Soil Characteristics

Author(s)

Hosseini Mohammad Saeid | Amirinejad Aliashraf | Issue Writer Certificate

Keywords

Nanoparticles

Mechanical strength

Physical properties

Soil texture

Abstract

Improvement of soil characteristics is one of the important issues in agricultural and engineering sciences. To investigate the effect of silica nanoparticles on the soil's mechanical and physical properties, a factorial experiment was conducted based on a completely randomized design with three replications. The factors included silica nanoparticles at three levels (0%, 0.5%, and 1% by weight) and two soil types with loam and clay loam textures. The results of the shear strength test showed that the addition of nanosilica increased the internal friction angle and particle adhesion in both loam and clay loam textures, but the liquid limit and plasticity index decreased in both soils. In the consolidation test, the compressibility coefficient in loam decreased from 0.38 to 0.21 and in clay loam from 0.42 to 0.23, while the swelling coefficient in loam decreased from 0.13 to 0.07 and in clay loam from 0.18 to 0.08. Overall, the results showed a significant effect of nanosilica particles on improving soil mechanical strength, especially in clay loam with higher clay content and specific surface area. Therefore, it can be concluded that the use of silica nanoparticles is an effective method for stabilizing problematic soils.

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