Enhancement Reinforcing Concrete Beams Using Polypropylene Cord-Knitted Bars

IF 0.7 Q3 MATERIALS SCIENCE, TEXTILES TEKSTILEC Pub Date : 2023-05-12 DOI:10.14502/tekstilec.66.2022108
M. Y. A. El-Aziz, Z. Abdel-megied, K. Seddik
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Abstract

Currently, technical fabrics play a major role in many industries due to their multiple characteristics. The aim of this research was to utilize composite knitted bars to reinforce concrete beams. Six cord-knitted samples with two different polypropylene yarn counts (outer layer) and three different core materials were manufactured and immersed in a local epoxy material (Kemapoxy 150). Composite knitted bars were prepared in this way. Several tests were conducted for fabrics and knitted bar samples. All data were collected and analysed using two different tools: ANOVA test and radar chart area. Finally, three concrete beams with a varying number of cord-knitted bars (one bar, two bars and three bars) were produced. The results indicated that the differences in outer and core yarns for cord-knitted samples have a significant effect on several fabric and bar characteristics. The knitted bars with PP core yarn can be more beneficial for concrete that do does not require high stress, while the knitted bars using glass fibres and polypropylene (50% and 50% PE) as core materials are not appropriate for applications that require more flexibility and extensibility. Reinforced concrete beams were improved significantly with cord-knitted bars, taking into account the number of bars per area, which may cause the minimizing of flexure force through an increase in that number of bars per area.
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聚丙烯帘线编织钢筋加固混凝土梁
目前,技术织物由于其多重特性在许多行业中发挥着重要作用。本研究的目的是利用复合编织钢筋来加固混凝土梁。制造具有两种不同聚丙烯纱线支数(外层)和三种不同芯材的六个帘线针织样品,并将其浸入局部环氧材料(Kemapoxy 150)中。用这种方法制备了复合针织棒材。对织物和针织棒材样品进行了几次测试。使用两种不同的工具收集和分析所有数据:方差分析测试和雷达图区域。最后,制作了三根不同数量的帘线编织钢筋(一根、两根和三根)的混凝土梁。结果表明,帘线针织样品的外芯纱和芯纱的差异对几种织物和棒材的特性有显著影响。具有PP芯纱的针织钢筋对于不需要高应力的混凝土可能更有利,而使用玻璃纤维和聚丙烯(50%和50%PE)作为芯材的针织钢筋不适用于需要更大柔性和延展性的应用。考虑到每个区域的钢筋数量,采用帘线编织钢筋对钢筋混凝土梁进行了显著改进,这可能会通过增加每个区域的筋数量来最小化弯曲力。
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来源期刊
TEKSTILEC
TEKSTILEC MATERIALS SCIENCE, TEXTILES-
CiteScore
1.30
自引率
14.30%
发文量
22
审稿时长
12 weeks
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