MONITORING OF THE TEMPERATURE REGIME AND THERMO-TECHNICAL PROPERTIES OF RAILWAY SUBGRADE MATERIALS
Journal Title: Scientific Journals of Silesian University of Technology. Series Transport - Year 2013, Vol 2013, Issue 80
Abstract
The modernisation of the Slovak Railways infrastructure has become a challenge to re-evaluate the dimensioning of the railway subgrade design for non-traffic loading, particularly in terms of the application of new materials into its construction and gradually changing climatic conditions. The first part of the paper shows the results of the long-term monitoring of the temperature regime of the railway subgrade on the railway track structure in the test stand (the position of the zero isotherm, the behaviour of the temperatures in the design layers and in their interfaces, the temperature of the air). The second part presents the results of the experimental determination of the thermo-technical properties of the built up materials into the railway subgrade of the trial stand structure (the thermal conductivity modulus, specific thermal capacity). The conclusion deals with the preliminary results derived from the comparison of the findings from both experimental measurements.
Authors and Affiliations
Libor IŽVOLT, Peter KUPČULIAK, Alžbeta PULTZNEROVÁ
Keywords
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