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Calorimetry of building materials

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Abstract

Classical adiabatic methods for measuring specific heat in a wide temperature range are very suitable for homogeneous, well defined materials. However, measurements on inhomogeneous materials require large samples, which makes using of adiabatic treatments extremely expensive. In this paper, a nonadiabatic method for determining the specific heat of inhomogeneous building materials within the wide temperature range of −30 to 1200°C is presented. The method is relatively simple, very cheap, and sufficiently accurate for use with building materials. Tests of the new developed method on two typical building materials, concrete and basalt fibreboards, demonstrate the method's applicability to practical measurements.

Zusammenfassung

Klassische adiabatische Methoden zur Messung der spezifischen Wärme in einem breiten Temperaturebereich sind für homogene, gut definierte Substanzen sehr geeignet. Dagegen fordern Messungen an inhomogenen Stoffen umfangreiche Proben, was denn Einsatz von adiabatischen Behandlungen äu\erst teuer macht. vorliegend wird eine nichtadiabatische Methode zur Ermittlung der spezifischen Wärme von inhomogenen Baustoffen in einem Temperaturbereich von −30 bis 1200°C vorgestellt. Diese Methode ist relativ einfach, sehr billig und ausreichend genau für den Einsatz bei Baustoffen. Die Erprobung der neu entwickelten Methode an zwei typischen Baustoffen wie Beton und Basaltfiberplatten zeigen die Einsetzbarkeit der Methode für praktische Messungen.

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References

  1. J. Toman, Influence of External Conditions on Building Materials and Constructions (in Czech) Thesis, CTU Prague 1986.

  2. J. Toman and O. Kutman, Effect of External Influences on Thermophysical Parameters of Building Materials. CTU Prague, 1986.

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Toman, J., Černy, R. Calorimetry of building materials. Journal of Thermal Analysis 43, 489–496 (1995). https://doi.org/10.1007/BF02546837

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  • DOI: https://doi.org/10.1007/BF02546837

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