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<p>In recent times, the construction industry has made it imperative to incorporate eco-friendly and sustainable materials into its operations. Utilizing industrial waste once again helps minimize pollution in the environment and eases the burden of disposing of waste. Therefore, the economic value of construction materials frequently includes concrete debris from a variety of sources, including ready-mix facilities and precast pieces. In order to construct Ultra-High Performance Concrete (UHPC), an innovative method of recycling Lathe Waste Powder (LWP) as a building binding material is presented in this research. The LWP was utilized as a substitute for cement. The replacement level was 0%, 10%, 20%, 30%, 40%, and 50%. Experimental investigations have been conducted to assess the influence of LWP on the flexural performance and ductility of UHPC elements. Furthermore, scanning electron microscopy (SEM) analysis, toughness, and deformability of UHPC were computed and compared with reference specimens. This investigation revealed that UHPC comprising LWP significantly improved the flexural toughness by up to 366% compared with the reference specimen. The ductility and deformability of UHPC were essentially enhanced up to 58% and 70%, respectively, assessed with the reference specimen. The flexural strength was enhanced by 6% by a 20% replacement of cement with UHPC-LWP compared to the reference specimen, though the compressive strength was reduced. Therefore, the UHPC might be suitable for earthquake resistance of concrete structures. Finally, the lathe waste in construction ensures net-zero emissions of concrete, which shows additional benefits towards achieving sustainability.</p>

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Flexural performance and ductility of UHPC incorporating Najran City’s lathe waste powder (LWP) for substitution of cement

  • 期刊论文

  • 发表日期：

    2025年8月23日

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  • Ibrahim Y. Hakeem,
  • Md. Akter Hosen,
  • Ali Alhamami,
  • Mana Alyami,
  • Walid Mansour

摘要

In recent times, the construction industry has made it imperative to incorporate eco-friendly and sustainable materials into its operations. Utilizing industrial waste once again helps minimize pollution in the environment and eases the burden of disposing of waste. Therefore, the economic value of construction materials frequently includes concrete debris from a variety of sources, including ready-mix facilities and precast pieces. In order to construct Ultra-High Performance Concrete (UHPC), an innovative method of recycling Lathe Waste Powder (LWP) as a building binding material is presented in this research. The LWP was utilized as a substitute for cement. The replacement level was 0%, 10%, 20%, 30%, 40%, and 50%. Experimental investigations have been conducted to assess the influence of LWP on the flexural performance and ductility of UHPC elements. Furthermore, scanning electron microscopy (SEM) analysis, toughness, and deformability of UHPC were computed and compared with reference specimens. This investigation revealed that UHPC comprising LWP significantly improved the flexural toughness by up to 366% compared with the reference specimen. The ductility and deformability of UHPC were essentially enhanced up to 58% and 70%, respectively, assessed with the reference specimen. The flexural strength was enhanced by 6% by a 20% replacement of cement with UHPC-LWP compared to the reference specimen, though the compressive strength was reduced. Therefore, the UHPC might be suitable for earthquake resistance of concrete structures. Finally, the lathe waste in construction ensures net-zero emissions of concrete, which shows additional benefits towards achieving sustainability.