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Moisture content influence on thermal conductivity of concrete

Uticaj sadržaja vlage na koeficijent toplotne provodnosti betona

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2016
1387.pdf (929.7Kb)
Authors
Aškrabić, Marina
Josipović, Jovana
Petojević, Zorana
Mirković, Milica
Brajović, Ljiljana
Gospavić, Radovan
Radovanović, Slobodan
Todorović, Goran
Conference object (Published version)
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Abstract
In this paper, physical processes of adsorption and transport of humidity, which has dominant influence on the physical and thermal characteristics of concrete, has been described. The impact of structure of concrete especially pores dimensions and distribution has been explained. The drastic increase in the coefficient of thermal conductivity λ of concrete at increasing relative humidity has been analyzed. An analytic formula for λ, as a function of the concrete density and moisture content in exploitation conditions, starting from light autoclaved aerated to heavy concrete, has been given. The formula is based on experimental values for λ available in the literature. It has been confirmed that the thermal conductivity of all concretes are directly related to density and inversely to porosity and pores diameters.
Source:
Zbornik radova 4. međunarodne konferencije Savremena dostignuća u građevinarstvu 2016, 2016, 32, 415-424
Publisher:
  • Građevinski fakultet Subotica, Subotica
Note:
  • Zbornik radova Građevinskog fakulteta

DOI: 10.14415/konferencijaGFS2016.042

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URI
http://grafar.grf.bg.ac.rs/handle/123456789/1389
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  • Radovi istraživača / Researcher's publications
  • Катедра за материјале и конструкције
  • Катедра за математику, физику и нацртну геометрију
  • Катедра за управљање пројектима у грађевинарству
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