Calibration of TDR Test Probe for Measuring Moisture in the Body of the Railway Substructure and its Subgrade

Abstract

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.

Keywords

• dielectric constant
• time domain reflectometry (tdr)
• moisture
• calibration curve
• time interval