- Author
- Richards, R. F.
- Title
- Measurements of Moisture Diffusivity for Porous Building Materials.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Book or Conf
- American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE). Thermal Performance of the Exterior Envelopes of Buildings V. Proceedings of the ASHRAE/DOE/BTECC Conference. December 7-10, 1992, ASHRAE, Atlanta, GA, Clearwater Beach, FL, 501-516 p., 1992
- Keywords
- building materials | porous materials | moisture | diffusivity | moisture content
- Abstract
- Moisture diffusivities of several common porous building materials were determined experimentally. Both wood-based and inorganic materials were included in the study. A steady-flux method was used that involved determining the one-dimensional mositure content profile produced in a sample through which a known constant flux of water is flowing. The transient mass fluxes through samples upon exposure to water, steady-state mass fluxes, one-dimensional moisture content profiles, and capillary pressure curves for low suction pressures, as well as the moisture diffusivities for a range of moisture contents, are presented for each material. Results of the study are compared to previously published measurements for similar materials.