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Potential of moisture dry-out from concrete wall in estonian climate

Author(s): Peep Pihelo, Magnus Lelumees, Targo Kalamees
Paper category: Proceedings
Book title: Proceedings on International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Moisture in Materials and Structures
Editor(s): Kurt Kielsgaard Hansen, Carsten Rode and Lars-Olof Nilsson
ISBN: 978-2-35158-178-0
e-ISBN: 978-2-35158-179-7
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 302 - 311
Total Pages: 10
Language : English

Abstract: The efficient way to meet the nearly zero energy buildings (nZEB) design ideology – remarkable reduction of heat losses – is to build highly insulated buildings. This study observes the hygrothermal performance of prefabricated concrete large panel element of a multi-storey building, planned to be renovated according to nZEB requirements. The validated calculation program Delphin was used to calibrate the calculation model. On the basis of measured data, the model was calibrated and calculations were made to evaluate the hygrothermal risks. The analysis showed that the hygrothermal performance of concrete wall is most dependent on constructional moisture content, dry-out capability and wind-driven rain load as well as on the N-E-S-W orientation of the wall. The results showed the highest moisture content in the wall’s external concrete slab on south-west direction in the last quarter and the first months of the year, when the moisture content was 110-114 kg/m3. This study showed that in the design of highly insulated concrete walls in cold and humid climate it is important to properly evaluate the initial state of constructions and consider critical weather loads in order to determine the feasible hygrothermal performance.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00

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