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This paper presents a numerical modeling approach using a 3D nonlinear finite element package to investigate the stress–strain behavior and the impact of polypropylene fibers on a notched beam. Polypropylene fibers have shown promising results in improving the mechanical properties of concrete. In this study, a notched beam with a 1.25% volume fraction of polypropylene fibers was subjected to three-point bending conditions to evaluate the behavior of polypropylene fiber-reinforced concrete. The in-house 3D nonlinear finite element analysis package, 3D-NLFEA, simulated the three-point bending conditions using a plasticity-fracture concrete model. This research aims to demonstrate the effects of adding polypropylene fibers on the mechanical properties of the notched beam, comparing it with plain concrete. Additionally, this analysis provides insights into deformation, peak load, crack pattern, post-peak behavior, and stress–strain characteristics of polypropylene fiber-reinforced concrete compared to plain concrete.

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Experimental and Numerical Modeling of Polypropylene Fiber Reinforced Concrete Notched Beam

  • 会议论文

  • 发表日期：

    2025年

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  • Pannadipa Putera Sukmajaya,
  • Bambang Piscesa,
  • Danny Triputra Setiamanah,
  • Indra Komara,
  • Wahyuniarsih Sutrisno,
  • Faimun Faimun,
  • Priyo Suprobo

摘要

This paper presents a numerical modeling approach using a 3D nonlinear finite element package to investigate the stress–strain behavior and the impact of polypropylene fibers on a notched beam. Polypropylene fibers have shown promising results in improving the mechanical properties of concrete. In this study, a notched beam with a 1.25% volume fraction of polypropylene fibers was subjected to three-point bending conditions to evaluate the behavior of polypropylene fiber-reinforced concrete. The in-house 3D nonlinear finite element analysis package, 3D-NLFEA, simulated the three-point bending conditions using a plasticity-fracture concrete model. This research aims to demonstrate the effects of adding polypropylene fibers on the mechanical properties of the notched beam, comparing it with plain concrete. Additionally, this analysis provides insights into deformation, peak load, crack pattern, post-peak behavior, and stress–strain characteristics of polypropylene fiber-reinforced concrete compared to plain concrete.