Reinforcement-Dependent Thermal Properties of Reinforced Concrete Columns and Slabs

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Abstract:

Energy efficiency aspects are rarely considered during practical structural design. In building energetic calculations, thermal conductivity values from EN ISO 10456:2008 [1] are mainly used, although the standard define concrete’s values only by taking into account the density and the approximate percentage of reinforcement. Details of the structure type (column or slab), reinforcement (e.g. direction, diameter, amount of rebar spacers) and other properties (e.g. concrete composition) are not mentioned. In this research, we uncover the possible relations between the steel content parameters and thermal properties by laboratory measurements of 1:2 scaled reinforced concrete specimens and validated finite element models of columns and slabs with different designed reinforcements. Results shows, that depending on the structure type, design and steel content, there is a difference in the structure’s equivalent thermal conductivity. Our results and experiences of this research possibly can be used in energy conscious structural design practice.

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279-286

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December 2016

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* - Corresponding Author

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