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使用电机阻抗传感技术评估混凝土的设置时间
1Department of Architecture, Seowon University, Cheongju 28674, Republic of Korea.
Materials (Basel, Switzerland)
|August 26, 2023
概括
本研究引入了电机阻抗 (EMI) 传感器,用于评估混凝土设置时间. 与传统测试相比,这种新的方法提供了更高的准确性,时间偏差率明显较低.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 结构健康监测 结构健康监测
背景情况:
- 准确评估混凝土置时间对于施工质量控制至关重要.
- 传统的方法,如透电阻测试,可能是劳动密集型的,并可能通过样本提取引入变异性.
- 开发非破坏性,现场监测技术用于混凝土属性是一个正在进行的研究领域.
研究的目的:
- 引入和验证一种新的电机阻抗 (EMI) 传感技术,用于评估混凝土的设置时间.
- 将EMI方法的准确性和可靠性与传统的透阻力测试进行比较.
- 证明嵌入式压电传感器 (PZT) 的有效性,以持续监测混凝土的置过程.
主要方法:
- 在混凝土样本中直接嵌入压电传感器 (PZT).
- 在设置过程中持续监控嵌入式传感器电机阻抗 (EMI) 信号的变化.
- 对从同一混凝土中提取的砂样本进行标准透阻力测试进行比较分析.
主要成果:
- 采用提取的砂样本进行的常规透阻力测试显示,混凝土设置时间的时间偏差率超过10%.
- 拟议的EMI传感技术直接应用于混凝土样本,实现了高达1.77%的显著较低时间偏差率.
- 这表明设置时间评估的精度大幅提高.
结论:
- 电机阻抗 (EMI) 传感技术为评估混凝土设置时间提供了更准确和可靠的方法.
- 嵌入用于连续EMI监控的PZT传感器为传统方法提供了非破坏性和高效的替代方案.
- 在混凝土建筑中,EMI技术具有显著的潜力,可以加强质量控制和结构健康监测.
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