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

  • Erik Altmäe
  • Aime RuusEmail author
  • Jane Raamets
  • Ernst Tungel
Conference paper
Part of the Springer Proceedings in Energy book series (SPE)


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.


Clay plaster Hygroscopic sorption Water vapour permeability Moisture buffering 



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


  1. 1.
    C. Rode, Moisture buffering of building materials, BYG DTU-126 Report, Department of Civil Engineering, Technical University of Denmark, 2005,
  2. 2.
    K. Svennberg, Moisture Buffering in the Indoor Environment. Thesis Building Physics LTH Lund University, 2006Google Scholar
  3. 3.
    H. Janssen, A. Roels, Qualitative and quantitative assessment of interior moisture buffering by enclosures. Energy Build. 41(4), 382–394 (2009)CrossRefGoogle Scholar
  4. 4.
    C. Rode, R. Peuhkuri, B. Time, K. Svennberg, T. Ojanen, Moisture buffer value of building materials. J. ASTM Int. 4(5), 1–12 (2007)CrossRefGoogle Scholar
  5. 5.
    H.M.M. Ramos, J.M.P.Q. Delgado, V.P. de Freitas, Influence of finishing coatings on hygroscopic moisture buffering in building elements. Constr. Build. Mater. 24, 2590–2597 (2010)CrossRefGoogle Scholar
  6. 6.
    N.M.M. Ramos, V.P. Freitas, Laboratory testing for daily hygroscopic inertia assessment, in Proceedings of the 8th Symposium on Building Physics in the Nordic countries, Copenhagen, Denmark (2008), pp. 809–816Google Scholar
  7. 7.
    F. McGregor, A. Heath, A. Shea, M. Lawrence, The moisture capacity of unfired clay masonry. Build. Environ. 82, 599–607 (2014)CrossRefGoogle Scholar
  8. 8.
    W.A. White, E. Pichler, Water Sorption Characteristics of Clay Minerals, USA (1959)Google Scholar
  9. 9.
    M. Palolill, Looduslike savide ja savipinnaste geotehniliste omaduste sõltuvus savimineraalsest koostisest: ekvivalentse basaalse distantsi kontseptsioon. Master Thesis, Tartu University Tartu, 2007, (In Estonian)
  10. 10.
    M. Schneider, K.-U. Goss, Prediction of the water sorption isotherm in air dry soils. Geoderma 170, 64–69 (2012)CrossRefGoogle Scholar
  11. 11.
    G.S. Campbell, S. Shiozawa, Prediction of hydraulic properties of soils using particle size distribution and bulk density data, in International Workshop on Indirect Methods for Estimating the Hydraulic Properties of Unsaturated Soils, University of California Press, Berkely (1992) referred by ScheiderGoogle Scholar
  12. 12.
    E. Arthur, M. Tuller, C. Moldrup, D.K. Jens, L.W. De Jong, Prediction of clay content from water vapour sorption isotherms considering hysteresis and soil organic matter Content. Eur. J. Soil Sci. 66, 206–217 (2015)CrossRefGoogle Scholar
  13. 13.
    O. Vares, A. Ruus, J. Raamets, E. Tungel, Determination of hygrothermal performance of clay-sand plaster: influence of covering on sorption and water vapour permeability. Energy Procedia 132, 267–272 (2017)CrossRefGoogle Scholar
  14. 14.
    EVS-EN 1015-3:2004 + A2:2007, Methods of Test Mortar for Masonry Part 3: Determination of Consistence of Fresh mortar by Flow TableGoogle Scholar
  15. 15.
    EVS-EN ISO 12571, Hygrothermal Performance of Building Materials and Products—Determination of Hygroscopic Sorption PropertiesGoogle Scholar
  16. 16.
    G. Minke, Building with Earth—Design and Technology of a Sustainable Architecture (Birkhäuser, Basel, 2012)Google Scholar
  17. 17.
    M. Maddison, T. Mauring, K. Kirsimäe, M. Mander, The humidity buffer capacity of clay-sand plaster filled with phythomass from treatment wetland. Build. Environ. 44, 1864–1868 (2010)CrossRefGoogle Scholar
  18. 18.
    EVS-EN 1015-19:2005, Methods of Test for Mortar for Masonry—Part 19: Determination of Water Vapour Permeability of Hardened Rendering and Plastering MortarsGoogle Scholar
  19. 19.
    EVS-EN1015-1:2004, Methods of Test for Mortar for Masonry. Part 1: Determination of Particle Size Distribution (by sieve analyses)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Erik Altmäe
    • 1
  • Aime Ruus
    • 1
    Email author
  • Jane Raamets
    • 1
  • Ernst Tungel
    • 1
  1. 1.Tallinn University of Technology, School of Technology, Tartu CollegeTartuEstonia

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