Tensile Strength of Polypropylene Fiber-Reinforced Red Soil: Mechanism of Fiber Length and Dosage Effects Through Experimental Investigation and DEM Modeling

Key Points

• Tensile strength increased with optimal polypropylene fiber reinforcement—specific lengths and dosages yield significant results.
• Increased fiber dosage and length alter the mechanical properties of polypropylene composites, enhancing structural integrity.
• Experimental investigation and discrete element method modeling were used to assess the impact of fiber length and dosage on tensile strength.
• Results suggest effective fiber reinforcement could improve soil stability, addressing challenges in geotechnical engineering.