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A comparison of different techniques to quantify moisture content profiles in porous building materials

Roels, S., Carmeliet, J., Hens, H., Brocken, H., Cerny, R., Pavlik, Z., Ellis, A. T., Hall, C., Kumaran, K., Pel, L., Plagge, R.
2004
Journal of Thermal Envelope and Building Science, Vol. 27, No. 4, 261-276

Roels, S., Carmeliet, J., Hens, H., Brocken, H., Cerny, R., Pavlik, Z., Ellis, A. T., Hall, C., Kumaran, K., Pel, L., Plagge, R., (2004), "A comparison of different techniques to quantify moisture content profiles in porous building materials", Journal of Thermal Envelope and Building Science, Vol. 27, No. 4, 261-276.
Abstract:
Several advanced non-destructive techniques are available to measure the evolution of content profiles with time, allowing the analysis of unsaturated flow and the determination of the moisture diffusivity of porous building materials. The reliability of six different techniques is investigated: the NMR-technique, the MRItechnique, the {gamma}-ray attenuation technique, the capacitance method, the X-ray projection method and the TDR-technique. All of them were applied to measure the moisture content evolution during free uptake experiments on two building materials. Considering the limitations of some of the techniques, a good overall agreement is obtained. The work presented is an outcome of the EU-initiated HAMSTAD-project.

Key Words: moisture content profiles; NMR; TDR; MRI ; {gamma}-ray; X-ray; capacitance method; round robin

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Author Information and Other Publications Notes
Roels, S.
Department of Civil Engineering Laboratory of Building Physics Catholic University of Leuven, Belgium
  1. A comparison of the Nordtest and Japanese test methods for the moisture buffering performance of building materials
  2. A quasi-steady state implementation of air convection in a transient heat and moisture building component model
  3. Description of the moisture capacity of building materials
  4. Determination of the isothermal moisture transport properties of porous building materials
  5. Determination of the liquid water diffusivity from transient moisture transfer experiments
  6. Determination of the moisture capacity of porous building materials
  7. Impact, absorption and evaporation of raindrops on building facades
  8. In situ determination of the moisture buffer potential of room enclosures
  9. Microscopic analysis of imbibition processes in oolitic limestone
  10. Modeling fluid flow in fractured media using continuum, network and discrete aproaches
  11. Position paper on material characterization and HAM model benchmarking
  12. Qualitative and quantitative assessment of interior moisture buffering by enclosures
  13. Review of mould prediction models and their influence on mould risk evaluation
  14. Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components
  15. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches  
Carmeliet, J.
Department of Civil Engineering Laboratory of Building Physics, Catholic University of Leuven, Belgium
  1. A multiscale network model for simulating moisture transfer properties of porous media
  2. A review of wind-driven rain research in building science
  3. A simplified numerical model for rainwater runoff on building facades: Possibilities and limitations
  4. Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation
  5. Description of the moisture capacity of building materials
  6. Determination of the isothermal moisture transport properties of porous building materials
  7. Determination of the liquid water diffusivity from transient moisture transfer experiments
  8. Determination of the moisture capacity of porous building materials
  9. Driving rain on building envelopes II: representative experimental data for driving rain estimation
  10. Microscopic analysis of imbibition processes in oolitic limestone
  11. Modeling fluid flow in fractured media using continuum, network and discrete aproaches
  12. Pedestrian wind environment around buildings: literature review and practical examples
  13. Performance prediction for masonry walls with EIFS using calculation procedures and laboratory testing
  14. Position paper on material characterization and HAM model benchmarking
  15. Rainwater runoff from building facades: A review
  16. Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components
  17. Spatial and temporal distribution of driving rain on a low-rise building
  18. The influence of soil moisture in the unsaturated zone on the heat loss from buildings via the ground
  19. Wind, rain and the building envelope: studies at the Laboratory of Building Physics, KULeuven
  20. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches  
Hens, H.
Department of Civil Engineering, Laboratory of Building Physics, Catholic University of Leuven, Leuven, Belgium http://www.bwk.kuleuven.ac.be/bwf/e_hugohens.htm
  1. Application of a new type of air and vapor retarder in a self-drying sloped roof with a cathedral ceiling
  2. Building envelopes in a holistic perspective
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  4. Determination of the liquid water diffusivity from transient moisture transfer experiments
  5. Evaluating the thermal performance of active envelopes
  6. Fungal defacement in buildings: a performance related approach
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  14. Microscopic analysis of imbibition processes in oolitic limestone
  15. Modeling. Final Report
  16. Performance prediction for masonry walls with EIFS using calculation procedures and laboratory testing
  17. Performance-based development of a thermally insulated pitched roof system
  18. Pitched roofs, heat-air-moisture transport in tiled and slated roofs with the thermal insulation at rafter level
  19. Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components
  20. The influence of soil moisture in the unsaturated zone on the heat loss from buildings via the ground  
Brocken, H.
  1. Determination of liquid water transfer properties of porous building materials and development of numerical assessment methods: introduction to the ec hamstad project
  2. Determination of the liquid water diffusivity from transient moisture transfer experiments  
Cerny, R.
Department of Structural Mechanics, Faculty of Civil Engineering, Czech Technical University, Th¨¢kurova 7, 166 29 Prague 6, Czech Republic
  1. A comparison of various techniques for determination of moisture diffusivity from moisture profiles
  2. A transient method for measuring the water vapor diffusion in porous building materials
  3. Determination of temperature- and moisture-dependent thermal conductivity by solving the inverse problem of heat conduction
  4. Determination of the liquid water diffusivity from transient moisture transfer experiments
  5. Water and water vapor penetration through coatings  
Pavlik, Z.
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Ellis, A. T.
     
Hall, C.
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Kumaran, K.
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  2. Effect of surface temperature on water absorption coefficient of building materials
  3. Final report from task 7 of MEWS long-term performance: predict the moisture management performance of wall systems as a function of climate, material properties, etc. through mathematical modelling
  4. Final Report from Task 8 of MEWS Project (T8-03) - Hygrothermal Response of Exterior Wall Systems to Climate Loading: Methodology and Interpretation of Results for Stucco, EIFS, Masonry and Siding Clad Wood-Frame Walls
  5. Influence of air space on multi-layered material water vapor permeability measurement
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  7. Integrated analysis of whole building heat, air and moisture transfer
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Pel, L.
  1. Determination of the liquid water diffusivity from transient moisture transfer experiments
  2. Moisture transport in porous building materials  
Plagge, R.
Institute of Building Climatology, Faculty of Architecture, University of Technology, Dresden, Germany.
  1. A two-levelled hygrothermal material database for the numerical simulation program DELPHIN4
  2. Analysis of selected water absorption coefficient measurements
  3. Numerical and experimental investigation of coupled heat and moisture transport problems
  4. On the hysteresis in moisture storage and conductivity measured by the instantaneous profile method  


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