碳纳米管用于混凝土的功能化,用于传感应用
Xiaohui Jia1, Anna Lushnikova1, Olivier Plé1
1LOCIE, Université Savoie Mont Blanc, CNRS UMR 5271, INES, 73376 Le Bourget du Lac, France.
Sensors (Basel, Switzerland)
|June 27, 2025
概括
这项研究表明,碳纳米管 (CNTs) 可以使混凝土自传感,用于结构健康监测. 经CNT改性混凝土具有双重电机械和热反应能力,证明了其作为多功能传感器材料的潜力.
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:
- 自传感混凝土将传感能力直接集成到材料中.
- 碳纳米管 (CNTs) 为材料功能化提供独特的电气和机械性能.
- 结构健康监测 (SHM) 需要可靠和集成的传感解决方案.
研究的目的:
- 开发和评估使用碳纳米管 (CNTs) 功能化的自传感混凝土.
- 调查CNT修饰混凝土的双重电机学和热反应性,用于SHM.
- 为了确定最佳的CNT度和对传感性能的治愈作用.
主要方法:
- 系统的实验分析,包括三点曲和热试验.
- 在7天和28天的固化期中,对具有不同CNT度的混凝土样本 (0-0.05重量%) 的评估.
- 测量机械强度,电流响应,热敏度和电导率.
主要成果:
- 机械性能和电气响应表现出依赖于固化的行为,在7天内,最佳的CNT平衡为0.01%的重量.
- 在28天后,在0.006重量%的CNTs下观察到稳定机械性能,在0.01重量%的CNTs下观察到最佳电感度.
- 经CNT修饰的混凝土表现出双重的电机械和热反应能力,年轻样本的热反应速度更快,并且具有半导体行为.
结论:
- 经CNT改性混凝土作为SHM的多功能传感材料具有显著的潜力.
- 该研究证实了功能化混凝土的双重电机械和热传感能力.
- 最佳的CNT度和固化时间是影响传感性能的关键因素.
更多相关视频
09:28Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes
Published on: January 10, 2017
8.3K
09:12Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering
Published on: June 1, 2016
9.3K
相关概念视频
Fiber Reinforced Concrete
143
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
143
Abrasion Resistance of Concrete
220
Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...
One such test is the revolving disc test, where three plates...
220
