In case of salt-charged masonry exposed to natural weather conditions there are occurring two interdependent mechanisms of transport: moisture- and salt-transport. For the purpose of investigating these coupled processes, the Fraunhofer Institute for Building Physics developed a new measurement technique which allows a non-destructive determination of both water content and salt content distribution in capillary porous building materials. By the use of a combination of two different physical measurement procedures, Nuclear Magnetic Resonance (NMR) and gammaray attenuation, a non-destructive determination of salt- and water content distributions is enabled. The water content distribution is determined independent from the existing salt content by using the NMR technique. The absorptive capacity of the ¦Ă -rays depends on the water- and salt content. Because of this the ¦Ă-ray attenuation measurement method always delivers the sum of water and salt content. By combining the measured water content distribution of the NMR-measurement with the results of the ¦Ă-measurement, it is possible to detect the salt content distribution. At the Institute for Building Physics, Holzkirchen, several investigations were performed. From the transient evolution of the determined profiles, it is possible to draw conclusions in respect of the occurring transport processes and their interdependency. Furthermore the experimental results are the basis for the development of novel coupled moisture and salt transfer models.

• measurement: hygrothermal properties
• measurement: moisture content : NMR and gamma ray

1. An educational hygrothermal model: WUFI-ORNL/IBP
2. Combined effect of temperature and humidity of the detoriation process of insulation materials in ETICS
3. Drying of an AAC flat roof in different climates Computational sensitivity analysis versus material property measurements
4. Moisture buffering effects of interior linings made from wood or wood based products
5. Moisture-buffering effect - experimental investigations and validation
6. Non-isothermal moisture transfer in porous building materials
7. Position paper on material characterization and HAM model benchmarking
8. Practical application of an uncertainty approach for hygrothermal building simulations--drying of an AAC flat roof
9. Previous Experimental Studies and Field Measurements on Moisture Buffering by Indoor Surface Materials
10. Simulation of indoor temperature and humidity conditions including hygrothermal interactions with the building envelope
11. Stochastic building envelope modeling -- the influence of material properties
12. The hygrothermal behaviour of rooms: combining thermal building simulation and hygrothermal envelope calculation
13. Two-dimensional transient heat and moisture simulations of rising damp with WUFI 2D
14. Uncertainty approaches for hygrothermal building simulations - drying of an AAC flat roof in different climates
15. Uncertainty of hygrothermal calculations  

1. A new model for mould prediction and its application on a test roof
2. A new model for mould prediction and its application on dwellings with mould on the outer facades
3. Determination of hygric material properties and calculation of the moisture balance of wooden prisms
4. Information and Technology Transfer from IBP: Mold Growth on ETICS (EIFS) as a Result of "Bad Workmanship"?
5. Mold growth prediction by computational simulation
6. Simple methods to approximate the liquid transport coefficients describing the absorption and drying