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Sustainable Use of Waste Materials in Stone Columns: A Review
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Sustainable Use of Waste Materials in Stone Columns: A Review
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Journal Article
Sustainable Use of Waste Materials in Stone Columns: A Review
2025
Overview
Stone columns are widely used as a cost-effective solution for enhancing the engineering behaviour of weak soils. Granular materials such as natural aggregates, which have higher stiffness than native soil, are used as the backfilling materials in the vertical boreholes in the ground, which results in improving the load-bearing capacity of existing weak soil. However, the growing utilisation and greed for extreme usage of natural aggregate poses challenges such as resource depletion, increased carbon emissions and ecological disruption, rendering it unsustainable. As a result, it is critical to create a sustainable substitute for natural aggregates in the construction of stone columns. Thus, nowadays, waste materials are widely used to tackle the problem of resource depletion, which indeed helps conserve resources and mitigate the effects of climate change. This paper presents a review of various literature available on the use of waste materials as a replacement for natural aggregate in stone column construction. The paper includes different types of soil that have been stabilised using waste materials, installation methods employed, experimental work and, most importantly, the outcomes derived from the utilisation of waste materials. The primary conclusion obtained from the current study is that some waste materials, like silica manganese slag, concrete waste, tyre waste, etc., are proven to be more effective when used in correct proportions. It has also been observed that using waste materials offers a sustainable and highly effective approach, particularly considering the conservation of natural resources. The study also presents several recommendations pertaining to the future scope.
