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Effect of Curing Condition and Solvent Content on Mechanical Properties of Zein-Biopolymer-Treated Soil

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  • Quadri Olakunle Babatunde

    (School of Agricultural Civil & Bio-Industrial Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea)

  • Dong Geon Son

    (School of Agricultural Civil & Bio-Industrial Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea)

  • Sang Yeob Kim

    (Department of Fire and Disaster Prevention, Konkuk University, 268, Chungwon-daero, Chungju 27478, Republic of Korea)

  • Yong-Hoon Byun

    (School of Agricultural Civil & Bio-Industrial Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea)

Abstract

The curing condition and solvent composition of biopolymer binders may impact their efficacy for soil stabilization. This study introduces a novel hydrophobic biopolymer, zein, and investigates the effects of solvent and curing conditions on the mechanical properties of zein-treated soils. The zein biopolymer is used to prepare cohesionless soil with various ethanol contents. Unconfined compressive strength and microscopic tests are used to investigate the treated specimens under two different curing conditions. The mechanical properties of the treated specimens are evaluated in terms of compressive strength and the secant elastic modulus. The experimental results show that the compressive strength and elastic modulus increase with the curing period under both curing conditions. Higher curing temperature improves the compressive strength of biopolymer-treated specimens. The linear relationship between compressive strength and the elastic modulus of zein-treated soils shows higher strength and a lower elastic modulus compared to rock. Furthermore, the zein biopolymer shows significant strength improvement compared to the existing biopolymers, including casein and lignin. Thus, the effects of solvent and curing conditions on the mechanical properties of zein-treated soil should be considered for its application to soil stabilization.

Suggested Citation

  • Quadri Olakunle Babatunde & Dong Geon Son & Sang Yeob Kim & Yong-Hoon Byun, 2023. "Effect of Curing Condition and Solvent Content on Mechanical Properties of Zein-Biopolymer-Treated Soil," Sustainability, MDPI, vol. 15(15), pages 1-13, August.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:15:p:12048-:d:1211815
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    References listed on IDEAS

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    1. Ali Firat Cabalar & Nurullah Akbulut & Suleyman Demir & Ozgur Yildiz, 2023. "Use of a Biopolymer for Road Pavement Subgrade," Sustainability, MDPI, vol. 15(10), pages 1-17, May.
    2. Ilhan Chang & Jooyoung Im & Gye-Chun Cho, 2016. "Introduction of Microbial Biopolymers in Soil Treatment for Future Environmentally-Friendly and Sustainable Geotechnical Engineering," Sustainability, MDPI, vol. 8(3), pages 1-23, March.
    3. Quadri Olakunle Babatunde & Yong-Hoon Byun, 2023. "Soil Stabilization Using Zein Biopolymer," Sustainability, MDPI, vol. 15(3), pages 1-12, January.
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