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Stabilization of Expansive Clays: A Micro-mechanistic Study
Stabilization of expansive clays is well known in practice worldwide. However, an additive and appropriate dosage is needed to understand blended clays' chemical and micro-structural behavior. Moreover, in current practice, most studies rely on blended clays' index and engineering properties even though the swell-shrink behavior of expansive clays chiefly depends on chemical constituents. Such exposition of selection of additives has chances of improper estimation of quantity. This paper presents the experimental investigation of index properties of soils by varying additives and their contents. The index properties were significantly improved with increasing additive content in the clays. Scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDS) were carried out to assess the long-term strength development. SEM and EDS micrographs revealed the potential role of the chemical composition in the strength development in chemically altered expansive clays. This study provides in-depth aspects of the role of chemical constituents indeed imperative to deciding the optimum dosage of chemical additives in the expansive clay blends. Further, this could be helpful to avoid over/under estimation of chemical dosage and economize project costs.
Stabilization of Expansive Clays: A Micro-mechanistic Study
Stabilization of expansive clays is well known in practice worldwide. However, an additive and appropriate dosage is needed to understand blended clays' chemical and micro-structural behavior. Moreover, in current practice, most studies rely on blended clays' index and engineering properties even though the swell-shrink behavior of expansive clays chiefly depends on chemical constituents. Such exposition of selection of additives has chances of improper estimation of quantity. This paper presents the experimental investigation of index properties of soils by varying additives and their contents. The index properties were significantly improved with increasing additive content in the clays. Scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDS) were carried out to assess the long-term strength development. SEM and EDS micrographs revealed the potential role of the chemical composition in the strength development in chemically altered expansive clays. This study provides in-depth aspects of the role of chemical constituents indeed imperative to deciding the optimum dosage of chemical additives in the expansive clay blends. Further, this could be helpful to avoid over/under estimation of chemical dosage and economize project costs.
Stabilization of Expansive Clays: A Micro-mechanistic Study
Lecture Notes in Civil Engineering
Shukla, Sanjay Kumar (editor) / Raman, Sudharshan N. (editor) / Bhattacharjee, B. (editor) / Singh, Priyanka (editor) / Nagaraju, T. V. (author) / Venkata Rao, M. (author) / Sunil, B. M. (author) / Chaudhary, Babloo (author)
International Conference on Trends and Recent Advances in Civil Engineering ; 2022 ; Noida, India
2023-06-22
10 pages
Article/Chapter (Book)
Electronic Resource
English
Stabilization of Expansive Clays in Oman
| Online Contents | 1998
Engineering Index Backfile | 1957
Engineering Index Backfile | 1957
Identification of Expansive Clays
| Engineering Index Backfile | 1963
Foundations on expansive clays
| Engineering Index Backfile | 1955