Influence of cockle shell ash and lime on geotechnical properties of expansive clay soil stabilized at optimum silica fume content

Muhammad Syamsul Imran, Zaini and Muzamir, Hasan and Suwito, Anang Rustanto and Hyodo, Masayuki (2025) Influence of cockle shell ash and lime on geotechnical properties of expansive clay soil stabilized at optimum silica fume content. Materials Science Forum, 1153. pp. 95-101. ISSN 0255-5476. (Published)

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DOI/Official URL: https://doi.org/10.4028/p-G0rfq9

Abstract

The study investigates the strength improvement of kaolinite clay soil with the inclusion of various percentages and combinations of silica fume (SF) and cockle shell ash (CKSA). Hence, the mechanical properties of various mix ratios of SF and CKSA are examined through the standard Proctor, unconfined compressive strength (UCS), and consolidated isotropic undrained (CIU) triaxial tests. The samples were treated for 1, 7, 14 and 30 days and examined under the UCS tests. The experimental results show that the strength of the kaolinite clay significantly rises with the inclusion of SF and CKSA at dissimilar mix ratios and curing days. The Field Emission Scanning Electron Microscopy (FESEM) profile has illustrated that the kaolinite clay soil molecules were fused jointly with SF and CKSA to form calcium aluminate hydrates (CAH) and calcium silicate hydrate (CSH), which enhanced the development of strength of the stabilized kaolinite clay. The combination of SF and CKSA resulted in a significant strength increment of the kaolinite clay soil up to 86.99%.

Item Type:	Article
Uncontrolled Keywords:	Consolidated Isotropic Undrained Triaxial Test; Field Emission Scanning Electron Microscopy; Kaolinite Clay Soil; Soil Improvement; Unconfined Compressive Test; X-Ray Diffraction
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction
Faculty/Division:	Institute of Postgraduate Studies Faculty of Civil Engineering Technology
Depositing User:	Ts. Dr. Muhammad Syamsul Imran Zaini
Date Deposited:	26 Jun 2025 07:08
Last Modified:	26 Jun 2025 07:08
URI:	http://umpir.ump.edu.my/id/eprint/44933
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