Fode Tsion Amsalu, Jande Yusufu Abeid Chande, Kivevele Thomas, Rahbar Nima
School of Materials, Energy, Water and Environmental Sciences (MEWES), The Nelson Mandela African Institution of Science and Technology, P.O. Box 447, Arusha, Tanzania.
Department of Civil Engineering, Wollega University, P.O. Box 395, Nekemte, Ethiopia.
Sci Rep. 2025 Mar 7;15(1):7945. doi: 10.1038/s41598-025-92306-z.
Globally, the disposal of waste plastic bottles is challenging. However, many researchers reported the importance of incorporating waste polyethylene-based waste water bottles (WWB) as a fiber and treated sisal fiber separately in the concrete mixture. However, it is novel to reinforce concrete by WWB fiber and treated sisal fiber together for more production of sustainable concrete. So the present study investigated the effect of using different doses of WWB fiber with and without treated sisal fiber on the physical and mechanical properties of concrete. Also, it is detail discussed its effect on concrete durability like in different elevated temperatures and acidic environments. As the result indicates, the reinforcement of concrete by WWB and treated sisal fibers lessens the fresh density and in 5% of HCl solution, it give higher strength and lower mass loss compared to the control concrete. Also, concrete WF25 increased compressive strength by 34.6%, 7.42%, and 3.6% respectively at 28, 56, and 180 days of concrete age, while concrete sample WF100 highly increased the splitting tensile strength of concrete by 26.67% compared to the control concrete mixture. Concrete having only WWB without treated sisal fiber reduced water absorption, increased mass loss, and lessened strength at 200, 300, and 400 °C elevated temperatures. So, this study is significant for implementing improved construction material performance by WWB and treated sisal fibers, as well as supporting the reduction of plastic bottles from the environment.
在全球范围内，废弃塑料瓶的处理具有挑战性。然而，许多研究人员报告了将废弃聚乙烯基废水瓶（WWB）作为一种纤维并将处理过的剑麻纤维分别掺入混凝土混合物中的重要性。然而，将WWB纤维和处理过的剑麻纤维一起用于增强混凝土以生产更多可持续混凝土是新颖的。因此，本研究调查了使用不同剂量的WWB纤维（有无处理过的剑麻纤维）对混凝土物理和力学性能的影响。此外，还详细讨论了其在不同高温和酸性环境等条件下对混凝土耐久性的影响。结果表明，用WWB和处理过的剑麻纤维增强混凝土会降低新拌混凝土密度，并且在5%的盐酸溶液中，与对照混凝土相比，它具有更高的强度和更低的质量损失。此外，混凝土WF25在混凝土龄期28天、56天和180天时，抗压强度分别提高了34.6%、7.42%和3.6%，而混凝土样品WF100与对照混凝土混合物相比，混凝土的劈裂抗拉强度大幅提高了26.67%。仅含有WWB而没有处理过的剑麻纤维的混凝土在200、300和400°C高温下吸水率降低、质量损失增加且强度降低。因此，本研究对于通过WWB和处理过的剑麻纤维实现改善建筑材料性能以及支持减少环境中的塑料瓶具有重要意义。
