<p>This study investigates the performance of natural coir geocell–reinforced sandy subgrades through repeated plate loading tests. Key parameters were evaluated under simulated traffic loading, including load-settlement behaviour, elastic rebound, and cumulative permanent deformation (CPD). Coir geocell reinforcement reduced CPD by 42%, improved resilient modulus by nearly 67%, and achieved a traffic benefit ratio (TBR) of 23 at a rut depth of 33&#xa0;mm. Mechanistic-empirical pavement analysis demonstrated a 40% reduction in base course thickness and a 22% reduction in overall granular layers for pavements designed for 10 million standard axles. These results demonstrate the effectiveness of three-dimensional coir geocells in improving subgrade resilience under repeated loading conditions.</p>

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Behaviour of the Pavement Subgrade Reinforced with Coir Geocells Under Repeated Loads

  • Dhanya Raveendran,
  • Abel George Paul,
  • Farhan Hassan Noorudheen,
  • Mohammad Bilal,
  • Dr. Sreevalsa Kolathayar

摘要

This study investigates the performance of natural coir geocell–reinforced sandy subgrades through repeated plate loading tests. Key parameters were evaluated under simulated traffic loading, including load-settlement behaviour, elastic rebound, and cumulative permanent deformation (CPD). Coir geocell reinforcement reduced CPD by 42%, improved resilient modulus by nearly 67%, and achieved a traffic benefit ratio (TBR) of 23 at a rut depth of 33 mm. Mechanistic-empirical pavement analysis demonstrated a 40% reduction in base course thickness and a 22% reduction in overall granular layers for pavements designed for 10 million standard axles. These results demonstrate the effectiveness of three-dimensional coir geocells in improving subgrade resilience under repeated loading conditions.