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Effect of Olivine Additive on the Shear Resistance of Fine-Grained Soils: A Sustainable Approach for Risk Mitigation and Environmental Impact Reduction

Author

Listed:
  • Abdelmaoula Mahamoud Tahir

    (Department of Civil Engineering, Sakarya University, Sakarya 54050, Turkey)

  • Sedat Sert

    (Department of Civil Engineering, Sakarya University, Sakarya 54050, Turkey)

Abstract

Increasing urbanization has also accelerated the potential risks of hazards arising from problematic soils. At this end, it becomes inevitable to apply soil improvement methods, which are the most applicable and economical methods. Increasing the strength of clays, especially in undrained conditions where they exhibit low shear resistance, is essential for mitigating soil-induced hazards. This study aimed to improve the shear resistance of clays with a waste material named olivine, which has rarely been used in soils before. The undrained shear strength of the samples prepared at different curing times was determined at various confining pressures. Both olivine-added and potassium hydroxide (KOH)-activated olivine-added samples were tested in the same manner. It was proven that the olivine contribution alone was not sufficient over time, and higher shear resistance was obtained when olivine was activated with KOH. The samples treated with only olivine added to the resistance with olivine grains, whereas the samples activated with KOH added resistance with both olivine grains and chemical bonds up to a rate of 521% in the case of 20% olivine being used. Morphological and mineralogical analyses were performed to analyze the chemical bonds formed after the reaction. Stabilization with olivine substitutes a sustainable method of improvement that provides benefits such as reducing carbon dioxide emissions and controlling waste.

Suggested Citation

  • Abdelmaoula Mahamoud Tahir & Sedat Sert, 2023. "Effect of Olivine Additive on the Shear Resistance of Fine-Grained Soils: A Sustainable Approach for Risk Mitigation and Environmental Impact Reduction," Sustainability, MDPI, vol. 15(13), pages 1-18, July.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:13:p:10683-:d:1188448
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    References listed on IDEAS

    as
    1. Angelo Magno dos Santos e Silva & Paula Taiane Pascoal & Magnos Baroni & Alexandre Silva de Vargas & Jaelson Budny & Luciano Pivoto Specht, 2023. "Use of Phosphoric Acid and Rice Hulk Ash as Lateritic Soil Stabilizers for Paving Applications," Sustainability, MDPI, vol. 15(9), pages 1-15, April.
    2. Yi Cai & Mingxi Ou, 2023. "Experimental Study on Expansive Soil Improved by Lignin and Its Derivatives," Sustainability, MDPI, vol. 15(11), pages 1-17, May.
    3. Sudip Basack & Sanjay Nimbalkar, 2023. "Load-Settlement Characteristics of Stone Column Reinforced Soft Marine Clay Deposit: Combined Field and Numerical Studies," Sustainability, MDPI, vol. 15(9), pages 1-15, May.
    4. Sanaz Soltaninejad & Seyed Morteza Marandi & Naveen BP, 2023. "Performance Evaluation of Clay Plastic Concrete of Cement and Epoxy Resin Composite as a Sustainable Construction Material in the Durability Process," Sustainability, MDPI, vol. 15(11), pages 1-32, June.
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