摘要：In the introduction of the paper there is characterized a way of monitoring the moisture in the railway substructure in the experimental stand, which is a part of the experimental workplace of the Department of Railway Engineering and Track Management. A substantial part of the paper is devoted to the calibration of TDR test probe for selected rock materials as a basic prerequisite for the determination of the actual moisture in the body of the railway substructure and subgrade.
关键词：Dielectric Constant ; Time Domain Reflectometry (TDR) ; Moisture ; Calibration Curve ; Time Interval
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