Communications - Scientific Letters of the University of Zilina 2001, 3(1):113-119 | DOI: 10.26552/com.C.2001.1.113-119

The Influence of Negative Temperature son the Heat Conductivity Factor of Road-Building Materials

Jan Celko1, Jarmila Cardosova1
1 University of Zilina, Civil Engineering Faculty, Department of Highway Engineering, Slovakia

Appraisal of pavement from preservation against frost influence point of view is important point of its structure evaluation. The Slovak climatic conditions originate the same cycles of pavement and subgrade freezing during a winter period. This effect is dangerous from surface deformation and loss of serviceability point of view. Therefore is necessary to know the thermo-technical properties of layers' materials for structure design. The values in nature state are measuredand evaluated only, although during freezing process the characteristics in frozen state are active. Therefore an article deals with measuring of a heat conductivity factor of building materials during negative temperature by method of non-stationary thermal flow. The asphalt mixtures used for pavement wearing courses and some type of subgrade soils were selected for analysis.

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Published: March 31, 2001  Show citation

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Celko, J., & Cardosova, J. (2001). The Influence of Negative Temperature son the Heat Conductivity Factor of Road-Building Materials. Communications - Scientific Letters of the University of Zilina, 3(1), 113-119. doi: 10.26552/com.C.2001.1.113-119
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    References

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    2. STN 721105 Stanovenie súčiniteľa tepelnej vodivosti metódou nestacionárneho tepelného toku. Vydavatelství norem Praha,1991. (Determination of heat conductivity factor by method of the non-stationary heat flow. Slovak standard). Vydavatelstvi norem Praha, 1991.
    3. ČELKO, J. a kol.: Analýza vplyvu mechaniky cestných vozoviek na stav ich povrchu. Správa pre záverečnú oponentúru grantovej úlohy 1/4145/97. (The analysis of the influence of pavement mechanics to the surface conditions. Final report of grant project). 99 strán, ŽU 12/1999.

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