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Fabrication and evaluation of a highly durable and reliable chloride monitoring sensor for civil infrastructure

机译：高度耐用和可靠的民用基础设施氯化物监测传感器的制造和评估

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A solid-state alkaline stable polymer coated Ag/AgCl sensor was fabricated for chloride sensing in concrete structures. The Ag/AgCl sensor was fabricated by sintering the AgCl powder with Ag wire. Polypyrrole (PPy) was prepared by simple chemical synthesis. The unwavering character of the prepared PPy coated Ag/AgCl sensor in saturated KCl solution was exemplified by potentiodynamic polarization studies followed by half-cell potential (HCP). The alkaline stability of the Ag/AgCl and PPy coated Ag/AgCl sensor in synthetic concrete pore solution (SCPS) was characterized by HCP, X-ray diffraction (XRD) and scanning electron microscopic (SEM) studies. The PPy coated chloride sensor was calibrated in saturated KCl, distilled water and SCPS with various concentrations of chloride ions. The results showed a good relationship between the sensitivity of the sensor regarding the potential to the logarithm of chloride activity. Further, it was noticed that the potential value remained stable with increasing immersion time.
机译：制备了固态碱性稳定聚合物涂层的Ag / AgCl传感器，用于混凝土结构中的氯离子感测。 Ag / AgCl传感器是通过将AgCl粉末与Ag线烧结而成的。通过简单的化学合成制备聚吡咯（PPy）。制备的PPy涂层Ag / AgCl传感器在饱和KCl溶液中的不变特性通过电位动力学极化研究和随后的半电池电位（HCP）进行了例证。通过HCP，X射线衍射（XRD）和扫描电子显微镜（SEM）研究了Ag / AgCl和PPy涂层的Ag / AgCl传感器在合成混凝土孔隙溶液（SCPS）中的碱性稳定性。 PPy涂层氯传感器在饱和KCl，蒸馏水和SCPS中用各种浓度的氯离子进行校准。结果表明，传感器的灵敏度与氯化物活性的对数之间存在良好的关系。此外，注意到随着浸入时间的增加电势值保持稳定。

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