Fraunhofer Institute for Building Physics
Drying curve, drying out
Hygrothermics
| Measurement | Mass change per time unit |
| Standard | Own testing method |
| Measurement object | Brick, lime stone, sandstone, concrete, plasters and renders, insulation materials, wooden materials, etc. |
Technical data
| Sample size, circular | Diameter 100 mm, 200 mm |
| Sample size, rectangular (L × W) | 100 × 100 mm 200 × 100 mm |
| Basic conditions | Climate chamber +23 °C, 50 % r.h. |
Special features
| Accredited by DAkkS D-PL-11140-11-02 |
The laboratory has a flexible accreditation according to DIN EN ISO/IEC 17025 Test laboratory moisture, mortar, radiation, emmissions |
| Test report can be issued |
More information
- A test specimen is saturated with water by immersion in water. The saturated specimen is sealed on the sides with aluminium foil and if necessary insulated. Then the drying out over the top face is measured in the climate chamber at +23 °C and 50 % r.h. The measured drying curve can be divided in a first drying period, which only relates to the test conditions (temperature, moisture, air velocity) and a second period, which is material dependent.
- Simple method for determination of the transport coefficients for the drying to be used in WUFI® material data set.