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Improved Granite Residual Soils from a Study on Diesel Contamination in East Hunan Province

Author

Listed:
  • Qiunan Chen

    (Hunan Province Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Kun Long

    (School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Xiaocheng Huang

    (School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Zhenghong Chen

    (School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

  • Yongchao He

    (College of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)

Abstract

Soil can be amended with cement, lime, fly ash and other curing agents after diesel contamination. In this study, a diesel-contaminated granite residual soil with an oil content of 9% was selected and amended with cement, lime and fly ash as curing agents and their incorporation levels were varied. A straight shear test showed that 6% lime resulted in the best improvement in the contaminated soil, with a cohesive force of 122.1 kPa and an internal friction angle of 27.1°. A disintegration test revealed that the disintegration resistance of the contaminated soil was improved by 6% cement, 20% fly ash and 10% lime, with 10% lime being the most effective. SEM tests revealed that diesel fuel acted as a constant pore fluid to cause significant fragmentation and separation of the granite residual soil from flakes and blocks to smaller agglomerates and fragments. The curing agent, by increasing the physical reaction products, causes the particles to agglomerate, filling the soil pores and enhancing the integrity of the soil, thus improving the soil properties.

Suggested Citation

  • Qiunan Chen & Kun Long & Xiaocheng Huang & Zhenghong Chen & Yongchao He, 2023. "Improved Granite Residual Soils from a Study on Diesel Contamination in East Hunan Province," Sustainability, MDPI, vol. 15(6), pages 1-14, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:6:p:4900-:d:1092632
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    References listed on IDEAS

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    1. Ye Yang & Chaokun Li & Zhiwen Chen & Yingying Dong & Nan Zhang & Yulu Wei & Hui Xi & Wendong Wang, 2022. "Characterization and Assessment of Organic Pollution at a Fumaric Acid Chemical Brownfield Site in Northwestern China," Sustainability, MDPI, vol. 14(19), pages 1-15, September.
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    Cited by:

    1. Yicheng Chen & Xiaowen Zhou & Xiaotao Ai & Mi Zhou & Yu Zhao & Zexin Lan, 2023. "Disintegration Characteristics of Remolded Granite Residual Soil with Different Moisture Contents," Sustainability, MDPI, vol. 16(1), pages 1-17, December.

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