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Cold Climate HVAC Conference

CCC 2018: Cold Climate HVAC 2018 pp 945–955Cite as

Determination of Clay-Sand Plaster Hygrothermal Performance: Influence of Different Types of Clays on Sorption and Water Vapour Permeability

Part of the Springer Proceedings in Energy book series (SPE)

Abstract

Eight different clay-sand plaster mixtures were studied. Mineral content and particle size distribution were estimated for all specimens. Hygroscopic sorption properties were determined (in climate chamber) at temperature of 23 ± 0.5 °C. The specimens were weighed at 1, 2, 3, 6, 12, 24 h until stabilisation at RH level of 30, 50 and 80% Moisture uptake (kg/m2) and moisture uptake rate kg/(m2h); moisture content and; points at sorption curve were monitored. There were large differences in sorption properties depending on clay type and plaster recipes. Total uptake of moisture at 30, 50 and 80% of RH for 2.5 cm plaster was 9.4–301.1, 17.5–465.9 and 41.6–744.9 g/m2 accordingly. Standard (EN 1015-19) procedure was followed. Water vapour diffusion equivalent air layer thickness Sd = 0.08–0.12 m was declared. Strong positive correlation was found between the amount of calcite and sorption properties of plasters.

Keywords

  • Clay plaster
  • Hygroscopic sorption
  • Water vapour permeability
  • Moisture buffering

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Acknowledgements

This study was supported by Tartu College of TUT. Special thanks to Marko Kikas from Saviukumaja and Prof. Kalle Kirsimäe from Tartu University.

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Authors and Affiliations

  1. Tallinn University of Technology, School of Technology, Tartu College, 78, Puiestee, 51008, Tartu, Estonia

    Erik Altmäe, Aime Ruus, Jane Raamets & Ernst Tungel

Authors
  1. Erik Altmäe
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  2. Aime Ruus
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  3. Jane Raamets
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  4. Ernst Tungel
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Corresponding author

Correspondence to Aime Ruus .

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Editors and Affiliations

  1. Division of Building Services, Lund University, Lund, Sweden

    Prof. Dennis Johansson

  2. Division of Building Physics, Lund University, Lund, Sweden

    Dr. Hans Bagge

  3. Division of Building Services, Lund University, Lund, Sweden

    Dr. Åsa Wahlström

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Altmäe, E., Ruus, A., Raamets, J., Tungel, E. (2019). Determination of Clay-Sand Plaster Hygrothermal Performance: Influence of Different Types of Clays on Sorption and Water Vapour Permeability. In: Johansson, D., Bagge, H., Wahlström, Å. (eds) Cold Climate HVAC 2018. CCC 2018. Springer Proceedings in Energy. Springer, Cham. https://doi.org/10.1007/978-3-030-00662-4_80

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  • DOI: https://doi.org/10.1007/978-3-030-00662-4_80

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-00661-7

  • Online ISBN: 978-3-030-00662-4

  • eBook Packages: EnergyEnergy (R0)

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