The effect of utilizing silica fume and eggshell ash on the geotechnical properties of soft kaolin clay

Zaini, M. S. I. and Muzamir, Hasan and Ling, Sin Yie and Khairil Azman, Masri and Putra Jaya, Ramadhansyah and Hyodo, Masayuki and Winter, Michael James (2022) The effect of utilizing silica fume and eggshell ash on the geotechnical properties of soft kaolin clay. Jurnal Teknologi (Sciences and Engineering), 84 (1). pp. 159-170. ISSN 0127-9696 (print); 2180-3722 (online)

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The application of chemical stabilizer in soil stabilization can effectively reduce the negative environmental impact in the construction industry. However, the stabilization of soft clay remains a challenge due to the costly and non-eco-friendly materials such as cement and lime. This research demonstrates the combination of SF and ESA in stabilizing the kaolin soils, based on the basic engineering properties and undrained shear strength (USS). Its effect was studied via the inclusion as cement replacement material in kaolin soil at 2, 4 and 6% (by weight of dry soft kaolin clay soil) of SF and ESA substitutions of 3, 6 and 9% (by weight of dry soft kaolin clay and SF content). The result shows a considerably lower specific gravity (4.9% reduction), reduced plasticity index (PI)(48.4% reduction), decreased maximum dry density (MDD) (5.5% reduction), increased optimum moisture content (OMC)(8.7% increment), and higher USS (68.8%). In conclusion, the combinations of SF and ESA as soil stabilization agents successfully enhance the soil strength of the kaolin opening a route to the low cost and eco-friendly materials in soil stabilization.

Item Type: Article
Uncontrolled Keywords: Soil Improvement, Silica Fume, Eggshell Ash, Strength Improvement, Kaolin
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty/Division: College of Engineering
Institute of Postgraduate Studies
Depositing User: PM Ts. Dr. Muzamir Hasan
Date Deposited: 13 Jun 2022 04:27
Last Modified: 13 Jun 2022 04:27
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