The Impact of Nano-Silica and Nano-Silica-Based Compounds on Strength, Mineralogy and Morphology of Soil: A Review

Because soft clays have a greater tendency to swell and shrink, structures constructed on them face the danger of suffering uneven settlement, which may result in structural damage. Numerous attempts have been made to stabilise the soil by the mean of mechanical and chemical stabilization. In recent...

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Published inIndian Geotechnical Journal Vol. 54; no. 3; pp. 876 - 896
Main Authors Chaudhary, Vaibhav, Yadav, Jitendra Singh, Dutta, Rakesh Kumar
Format Journal Article
LanguageEnglish
Published New Delhi Springer India 2024
Springer Nature B.V
Subjects
Clay
Clay minerals
Engineering
Foundations
Geoengineering
Hydraulics
Literature reviews
Mineralogy
Morphology
Silica
Silicon dioxide
Soil improvement
Soil mechanics
Soil morphology
Soil properties
Soil strength
Soils
State of the Art/Practice Paper
Structural damage
Nano-silica and nano-silica-based compounds
Weak soil
Microstructure
Strength
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Summary:Because soft clays have a greater tendency to swell and shrink, structures constructed on them face the danger of suffering uneven settlement, which may result in structural damage. Numerous attempts have been made to stabilise the soil by the mean of mechanical and chemical stabilization. In recent years, several researchers intended to change the geotechnical characteristics of problematic soils with the help of Nano-additives such as Nano-silica, Nano-clay, Nano-lime, Nano-carbons. This study is focused on summarising the change in strength, mineralogical and morphological behaviour of soil with the incorporation of Nano-silica and Nano-silica-based compounds reported by researchers. It was observed that strength of soil improved drastically with the addition of Nano-silica and Nano-silica-based compounds up to optimum dosages. The inclusion of Nano-silica densifies soil due to the filling effect, formation of better interparticle bond and pozzolanic products. From the detailed review of literature, it can be concluded that it is advantageous to incorporate Nano-silica and Nano-silica-based compounds to improve the geotechnical properties of problematic soils.
ISSN:0971-9555
2277-3347
DOI:10.1007/s40098-024-00871-3