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<p>Numerous studies have utilized geotextiles with only 2–3 tensile strengths, despite the availability of non-woven geotextiles (NWG) with over 10 tensile strengths in the market. Identifying the most cost-efficient option for optimal performance is crucial. This study conducted a series of California Bearing Ratio (CBR) tests to measure the strength of subgrade soil reinforced with NWG of 10 different tensile strengths (10, 25, 35, 50, 65, 80, 100, 115, 123, and 140 kN/m) under both unsoaked and soaked conditions. The aim was to determine the optimal geotextile tensile strength for maximum benefits. Experimental results showed significant improvements in subgrade CBR, ranging from 15.13 to 110.18% compared to unreinforced soil, when reinforced with NWG tensile strengths from 10 kN/m to 100 kN/m in unsoaked conditions. This improvement was attributed to the membrane effect, lateral confinement, and frictional interlocking. However, at higher geotextile tensile strengths (115, 123, and 140 kN/m), the CBR increased limited to only 112.16%, 113.43%, and 114.28%, respectively. In soaked conditions, the maximum CBR increase of 99.04% was achieved at 100 kN/m, with no further considerable improvement at higher tensile strengths. The 100 KN/m was found to be optimum tensile strength in soft soil’s subgrade improvement as further CBR gain was limited by insufficient soil deformation to mobilize the NWG reinforcement’s peak tensile resistance entirely.</p>

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Evaluating the Impact of Various Tensile Strengths of Non-Woven Geotextiles on Subgrade CBR Enhancement: An Experimental Approach

  • 期刊论文

  • 发表日期：

    2025年7月2日

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  • Muhammad Attique,
  • Shah Hassan,
  • Badee Alshameri,
  • Waqas Hassan,
  • Sufyan Ghani,
  • Abdullah Ansari

摘要

Numerous studies have utilized geotextiles with only 2–3 tensile strengths, despite the availability of non-woven geotextiles (NWG) with over 10 tensile strengths in the market. Identifying the most cost-efficient option for optimal performance is crucial. This study conducted a series of California Bearing Ratio (CBR) tests to measure the strength of subgrade soil reinforced with NWG of 10 different tensile strengths (10, 25, 35, 50, 65, 80, 100, 115, 123, and 140 kN/m) under both unsoaked and soaked conditions. The aim was to determine the optimal geotextile tensile strength for maximum benefits. Experimental results showed significant improvements in subgrade CBR, ranging from 15.13 to 110.18% compared to unreinforced soil, when reinforced with NWG tensile strengths from 10 kN/m to 100 kN/m in unsoaked conditions. This improvement was attributed to the membrane effect, lateral confinement, and frictional interlocking. However, at higher geotextile tensile strengths (115, 123, and 140 kN/m), the CBR increased limited to only 112.16%, 113.43%, and 114.28%, respectively. In soaked conditions, the maximum CBR increase of 99.04% was achieved at 100 kN/m, with no further considerable improvement at higher tensile strengths. The 100 KN/m was found to be optimum tensile strength in soft soil’s subgrade improvement as further CBR gain was limited by insufficient soil deformation to mobilize the NWG reinforcement’s peak tensile resistance entirely.