Electromagnetic sensing and modeling for cement paste moisture estimation

IF 5.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Measurement Pub Date : 2025-06-07 DOI:10.1016/j.measurement.2025.118097

Ruixue Cao , Jie Hu , Yingjie Zhang , Na Zhao , Chonghui Yue

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引用次数: 0

Abstract

Electromagnetic sensing techniques, such as ground-penetrating radar and imaging radar, are capable of both surface and subsurface sensing of concrete structures, such as bridges, roadways, and tunnels, etc. However, the performance and effectiveness of electromagnetic sensing techniques for concretes highly depend on a fundamental understanding of the material’s dielectric properties as a function of the water-to-cement (w/c) ratio and moisture content. The aim of this paper is to investigate the combined effects of the w/c ratios (0.35, 0.42, 0.45, 0.5, 0.55) and moisture content in cement paste within the frequency range of 1–4.5 GHz. Twelve cement paste specimens were analyzed: six were oven-dried, and six were conditioned at room temperature. The dielectric properties of the twelve specimens were measured in a frequency range of 1–4.5 GHz. Subsequently, the dielectric constants were modeled and discussed. The model was used to estimate the moisture content of the cement paste. The estimated moisture contents were compared with the actual results. The results indicate that for most samples, the estimated results match very well with the actual results. However, with a lower moisture content, the model tends to exhibit a bias toward underestimation.

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水泥浆体水分估算的电磁传感与建模

电磁传感技术，如探地雷达和成像雷达，能够在地面和地下感应混凝土结构，如桥梁，道路，隧道等。然而，混凝土电磁传感技术的性能和有效性在很大程度上取决于对材料介电特性作为水灰比（w/c）和水分含量的函数的基本理解。本文的目的是研究在1-4.5 GHz频率范围内，水泥浆体的w/c比（0.35、0.42、0.45、0.5、0.55）和含水率的综合影响。分析了12个水泥浆体样本：6个是烘箱干燥，6个在室温条件下。在1-4.5 GHz频率范围内测量了12个样品的介电性能。随后，对介电常数进行了建模和讨论。利用该模型对水泥浆体的含水率进行了估算。将估算的含水率与实际结果进行了比较。结果表明，对于大多数样本，估计结果与实际结果吻合得很好。然而，当含水率较低时，模型倾向于低估。

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来源期刊

Measurement 工程技术-工程：综合

CiteScore

10.20

自引率

12.50%

发文量

1589

审稿时长

12.1 months

期刊介绍： Contributions are invited on novel achievements in all fields of measurement and instrumentation science and technology. Authors are encouraged to submit novel material, whose ultimate goal is an advancement in the state of the art of: measurement and metrology fundamentals, sensors, measurement instruments, measurement and estimation techniques, measurement data processing and fusion algorithms, evaluation procedures and methodologies for plants and industrial processes, performance analysis of systems, processes and algorithms, mathematical models for measurement-oriented purposes, distributed measurement systems in a connected world.