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<p>This study examines the impact of randomly distributed polypropylene fibre reinforcement on the geotechnical properties of locally sourced Chlef sand. Chlef sand is a regional substance characterised by subpar geotechnical features, including low bearing capacity, inadequate shear strength, and restricted applicability in construction activities. The analysis involved conducting Standard Proctor compaction, California Bearing Ratio, and unconfined compression tests on the acquired soil samples. Experiments were performed on both reinforced and non-reinforced Chlef sand stabilised with 5% cement and varied proportions (0%, 0.2%, 0.5%, and 0.8%) of polypropylene fibre by the weight of the soil sample. The results indicated substantial enhancements in strength properties, with optimal performance observed at fibre content levels between 0.5% and 0.8%. Specifying varying ideal fibre contents for distinct technical qualities. The incorporation of fibre significantly influences the failure mode behaviour of cemented sand. A Chinese regression model from the excavation engineering manual was modified to forecast the strength development of fibre-reinforced cemented sand at curing ages of 7 and 14 days. The combined cement-fibre stabilisation method effectively converted the substandard local Chlef sand into a material appropriate for diverse geotechnical applications, such as pavement subgrades and foundation systems.</p>

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Synergistic Effects of Fibre and Cement on the Stabilization of Granular Soils

  • 期刊论文

  • 发表日期：

    2025年11月22日

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  • Wiam Khebizi,
  • Abdelmoumen Aala Eddine Driss,
  • Mohamed Ghrici,
  • Arif Ali Baig Moghal

摘要

This study examines the impact of randomly distributed polypropylene fibre reinforcement on the geotechnical properties of locally sourced Chlef sand. Chlef sand is a regional substance characterised by subpar geotechnical features, including low bearing capacity, inadequate shear strength, and restricted applicability in construction activities. The analysis involved conducting Standard Proctor compaction, California Bearing Ratio, and unconfined compression tests on the acquired soil samples. Experiments were performed on both reinforced and non-reinforced Chlef sand stabilised with 5% cement and varied proportions (0%, 0.2%, 0.5%, and 0.8%) of polypropylene fibre by the weight of the soil sample. The results indicated substantial enhancements in strength properties, with optimal performance observed at fibre content levels between 0.5% and 0.8%. Specifying varying ideal fibre contents for distinct technical qualities. The incorporation of fibre significantly influences the failure mode behaviour of cemented sand. A Chinese regression model from the excavation engineering manual was modified to forecast the strength development of fibre-reinforced cemented sand at curing ages of 7 and 14 days. The combined cement-fibre stabilisation method effectively converted the substandard local Chlef sand into a material appropriate for diverse geotechnical applications, such as pavement subgrades and foundation systems.