Engineered Soil through Stabilization: Sustainable Practices

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Engineered soil is a special type of soil in which the characteristics are altered through the addition of a stabilizing agent, a special type of material that alters the properties. This chapter offers an in-depth exploration of soil stabilization, a crucial technique in enhancing soil properties to meet construction requirements. Mechanical stabilization relies on physical modifications through compaction and soil blending against chemical stabilization, where admixtures are introduced to the soil to improve its characteristics. A detailed examination of various admixtures, including lime, cement, and industrial by-products, is provided in this chapter to give insights into their compatibility with different soil types and their effects on soil strength, durability, and permeability. Emphasis is given for a better understanding of soil conditions such as moisture content, type, and organic matter alongside the choice and proportion of admixture as pivotal factors determining the stabilization outcome. The enhancement of soil properties through chemical and mineral admixtures is highlighted, showcasing their role in augmenting soil strength, enhancing resistance to environmental stresses, and mitigating shrink-swell potential, collectively contributing to the longevity of construction undertakings. Furthermore, the chapter delves into field construction methods for soil stabilization.