Physical-mechanical Evaluation of Polyethylene Terephthalate Fiber Dune Sand Mortar Exposed to Elevated Temperature

A. Ghrieb, Y. Abadou, T. Choungara, R. Bustamante
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Abstract

Abstract The mechanical properties of mortar containing Polyethylene Terephthalate (PET) as Strapping Band Fibers (SBF) replacing natural sand have been studied by many researchers. These studies indicate that when SBF is used as a substitute for sand in mortar, the characteristics in both the fresh and hardened states are altered. This experiment’s purpose is to valorize local materials, which are abundant in the region of Djelfa (Algeria), in cement mortar manufacturing and to discuss the influence of these materials on the mechanical and physical characteristics of the resulting mortar at the room, and at the high temperature. This study presents the results of an experimental investigation into the effects of high temperatures on the properties of dune sand mortar made with strapping band fibers. The method for formulating the mortar mixes was based on the progressive replacement of dune sand by PET fibers, with weight contents of 0%, 0.5%, 1%, 1.5%, 2%, and 2.5%. Several tests have been carried out to study the evolution of the different characteristics of mortar mixtures. The workability, bulk density, compressive and tensile strengths, and all samples were subjected to temperatures of ambient, 100 °C, 200 °C, and 400 °C. The results demonstrate that the inclusion of the recycled fibers and the preservation mode had remarkable effects on the characteristics of the mortar obtained.
高温下聚对苯二甲酸乙二醇酯纤维沙丘砂砂浆的物理力学性能评价
摘要以聚对苯二甲酸乙二醇酯(PET)作为带状带纤维(SBF)替代天然砂的砂浆力学性能已受到许多研究者的研究。这些研究表明,在砂浆中使用SBF代替砂土时,改变了砂浆在新鲜状态和硬化状态下的特性。本实验的目的是评估当地材料,这些材料在Djelfa(阿尔及利亚)地区丰富,用于水泥砂浆制造,并讨论这些材料在室内和高温下对所得砂浆的机械和物理特性的影响。本文介绍了高温对带状纤维沙丘砂砂浆性能影响的实验研究结果。砂浆的配制方法是用PET纤维逐步替代沙丘砂,重量含量分别为0%、0.5%、1%、1.5%、2%和2.5%。为了研究砂浆混合料不同特性的演变规律,进行了多次试验。工作性、体积密度、抗压强度和抗拉强度以及所有样品都经历了环境温度、100°C、200°C和400°C。结果表明,再生纤维的包合和保存方式对砂浆的性能有显著影响。
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