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This study performs an in-depth geotechnical analysis to determine the possibility of using Um-Alamad (UA) soil as a compacted clay liner. Um-Alamad is located about 30 km to the west of Amman, Jordan’s capital. The location was selected due to its proximity to the Al Gabawi landfill and the extensive presence of clayey soil in the region. Results indicated that the UA soil can be used as clay liners, meeting the criteria set by the United States Environmental Protection Agency (USEPA) for hydraulic conductivity, where the values are all below the maximum allowable limit. Moreover, the soil meets the essential requirements for shear strength and volumetric strain. Additionally, the study assessed potential leakage rates under three scenarios: using clay-only liners and composite liners with either poor or good contact conditions. Results revealed that the composite liners with good contact condition achieved the lowest leakage rates, highlighting their effectiveness in minimizing environmental risks at landfill sites.

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Performance of Selected Expansive Clayey Soil as Compacted Liners for Landfill

  • 会议论文

  • 发表日期：

    2025年

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  • Abdulla A. Sharo,
  • Qais Aburadi,
  • Mohammad O. Taamneh,
  • Saja F. Alkhateeb

摘要

This study performs an in-depth geotechnical analysis to determine the possibility of using Um-Alamad (UA) soil as a compacted clay liner. Um-Alamad is located about 30 km to the west of Amman, Jordan’s capital. The location was selected due to its proximity to the Al Gabawi landfill and the extensive presence of clayey soil in the region. Results indicated that the UA soil can be used as clay liners, meeting the criteria set by the United States Environmental Protection Agency (USEPA) for hydraulic conductivity, where the values are all below the maximum allowable limit. Moreover, the soil meets the essential requirements for shear strength and volumetric strain. Additionally, the study assessed potential leakage rates under three scenarios: using clay-only liners and composite liners with either poor or good contact conditions. Results revealed that the composite liners with good contact condition achieved the lowest leakage rates, highlighting their effectiveness in minimizing environmental risks at landfill sites.