尼龙纤维增强水泥砂浆
Recycled nylon fibers as cement mortar reinforcement
摘要:
我们研究了从废弃渔网中回收的尼龙纤维在工程中的应用,重点研究了回收尼龙纤维作为水泥砂浆抗拉增强材料的应用。我们首先通过表征未经处理和碱固化的回收尼龙纤维的拉伸行为,这些纤维是通过手工切割废渔网丝获得的,目的是评估这些材料对化学侵蚀的抵抗力。还特别注意评估新砂浆的可加工性以及废弃渔网释放到环境中的污染物可能造成的影响。接下来,我们处理与再生尼龙纤维增强水泥砂浆的压缩和弯曲试验,并建立与未增强材料的实验行为和现有文献中给出的结果进行比较。在我们对增强纤维的不同重量分数和纵横比的分析中,我们观察到与未增强材料相比,尼龙增强砂浆的拉伸强度(高达+35%)和韧性(高达13倍)显著增加。所呈现的结果强调了回收尼龙纤维用于增强可持续水泥砂浆的高环境和机械潜力。
英文摘要:
We investigate engineering applications of recycled nylon fibers obtained from waste fishing nets, focusing our attention on the use of recycled nylon fibers as tensile reinforcement of cementitious mortars. We begin by characterizing the tensile behavior of both unconditioned and alkali-cured recycled nylon fibers obtained through manual cutting of waste fishing net filaments, with the aim of assessing the resistance of such materials to chemical attacks. Special attention is also given to evaluating the workability of fresh mortar and the possible impacts of contaminants released by waste fishing nets into the environment. Next, we deal with compression and bending tests on cementitious mortars reinforced with recycled nylon fibers, and establish comparisons with the experimental behavior of the unreinforced material and with results given in existing literature. In our analysis of different weight fractions and aspect ratios of the reinforcing fibers, we observe marked increases in the tensile strength (up to +35%) and toughness (up to 13 times greater) of the nylon reinforced mortar, as compared with the unreinforced material. The presented results emphasize the high environmental and mechanical potential of recycled nylon fibers for the reinforcement of sustainable cement mortars.
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