Feasibility of Date Palm Fibers as a Natural Fiber Reinforcement in Ultra-High-Performance Concrete
摘要
This study investigates the feasibility of utilizing date palm fibers (DPF), an agricultural waste byproduct, as a natural reinforcement in ultra-high-performance concrete (UHPC). In response to the rising costs and limited availability of steel fibers, DPF was incorporated at varying replacement levels (0–100%) to assess its impact on the mechanical and morphological performance of UHPC. Experimental results demonstrated that while increasing DPF content led to a gradual reduction in compressive and flexural strength, it significantly enhanced ductility, energy absorption, and post-peak deformation behavior. Scanning Electron Microscopy (SEM) analysis confirmed improved fiber-matrix interfacial bonding for DPF, attributed to its rough surface morphology. These findings highlight DPF’s potential as an eco-friendly alternative to steel fibers in UHPC, promoting sustainable construction practices with acceptable mechanical performance.