Bahij Sifatullah, Omary Safiullah, Steiner Vincent, Feugeas Françoise, Ibrahimkhil Mohammad Hashim
ICube, UMR CNRS 7357, INSA-Strasbourg, 24 Bld de la Victoire, University of Strasbourg, 67084 Strasbourg, France.
Department of Civil and Industrial Construction, Kabul Polytechnic University, Kabul 1010, Afghanistan.
Materials (Basel). 2022 Dec 8;15(24):8766. doi: 10.3390/ma15248766.
This study will investigate the effect of non-woven PET plastic tissue on the fresh, physical, mechanical, acoustic, thermal, and microstructural behaviors of concrete. Including reference specimens, non-woven fabrics were considered in two ways: (a) as a layer with four various configurations of 1-layer, 2-sides, 3-sides, and full wrapping (4-sides) to strengthen specimens, and (b) as (10 × 10) mm cut pieces with three different incorporated percentages of 0.25%, 0.50%, and 0.75%. Based on the experimental results, mechanical properties (compressive, split tensile, and flexural strengths) were remarkably improved by applying non-woven sheets as a layer. For instance, the cylindrical compressive and split tensile strengths were improved by 13.40% and 15.12% for the strengthened specimens compared to the reference specimens, respectively. Moreover, control specimens were damaged to many fragments after mechanical testing, but the samples strengthened by such fabrics or containing cut pieces were maintained and not separated into many small parts. The acoustic behavior and thermal conductivity declined by 9.83% and 19.67% with the attachment of tissue on one side and 2-sides, respectively. Acoustic behaviors decreased by 10.0%, 17.60%, and 26.30% and thermal conductivity decreased by 6.60%, 12.10%, and 15.50%, with the incorporation of 0.25%, 0.50%, and 0.75% of cut pieces, respectively. Finally, it was discovered that non-woven tissue is advised to enhance particular properties of concrete.
本研究将探究非织造聚酯塑料薄材对混凝土的新鲜度、物理性能、力学性能、声学性能、热学性能及微观结构行为的影响。包括参考试件在内，非织造织物通过两种方式进行考量：(a) 作为一层，采用单层、双侧、三侧和全包裹（四面）四种不同的配置方式来增强试件；(b) 作为 (10×10) mm 的切块，掺入三种不同的比例，分别为 0.25%、0.50% 和 0.75%。基于实验结果，将非织造片材作为一层应用时，力学性能（抗压强度、劈裂抗拉强度和抗弯强度）得到了显著改善。例如，与参考试件相比，增强试件的圆柱抗压强度和劈裂抗拉强度分别提高了 13.40% 和 15.12%。此外，控制试件在力学测试后损坏成许多碎片，但用此类织物增强或含有切块的样品保持完好，未分离成许多小部件。在试件一侧和两侧附着薄材时，声学性能和热导率分别下降了 9.83% 和 19.67%。掺入 0.25%、0.50% 和 0.75% 的切块时，声学性能分别下降了 10.0%、17.60% 和 26.30%，热导率分别下降了 6.60%、12.10% 和 15.50%。最后，研究发现建议使用非织造薄材来增强混凝土的特定性能。
