基于石墨烯的应变传感用于使用天然和回收砂的水泥复合材料
Uzma Bibi1, Alireza Bahrami2, Faisal Shabbir1
1Civil Engineering Department, University of Engineering and Technology, Taxila 47050, Pakistan.
Sensors (Basel, Switzerland)
|August 26, 2023
概括
这项研究探讨了用于结构健康监测的水泥复合材料中的石墨烯纳米板块 (GNPs). 最佳的GNP度提高了天然沙复合材料的强度和压电阻行为,表明可持续的自我传感基础设施应用.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 纳米技术 纳米技术
背景情况:
- 传统的结构健康监测是昂贵的,容易损坏传感器.
- 开发自传感材料为基础设施提供了一个可持续的替代方案.
- 石墨烯纳米板块 (GNPs) 在增强水泥复合材料性能方面表现有前途.
研究的目的:
- 研究不同度的石墨烯纳米板块 (GNP) 对水泥复合材料的强度和压电阻行为的影响.
- 为了比较使用天然砂制成的复合材料与回收砂的性能.
- 评估这些复合材料在民用基础设施自传感应用中的潜力.
主要方法:
- 两种类型的复合材料是使用天然和回收砂制成的,其GNP度为2%,4%,6%和8%.
- 通过使用超级可塑剂,然后进行超声波,实现了GNP分散.
- 采用四探针方法来评估压电阻行为和电阻稳定性.
主要成果:
- 自然砂复合材料的压力强度增加到6%的GNP含量,然后下降.
- 回收砂复合材料的压力强度随着GNP含量的增加而持续下降.
- 两种沙子类型的GNP均在4%的情况下观察到最佳的电阻稳定性和线性压电阻行为.
结论:
- 可以为民用基础设施开发包含GNP的自传感可持续水泥复合材料.
- 强度和压电阻力的最佳GNP度取决于沙类型.
- 对GNP水泥复合材料的进一步研究可以推进结构健康监测技术.
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