Gudmundsson, K.
2002 6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway, Jun 17
Gudmundsson, K., (2002), "Isotopic analysis of moisture transport", 6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway, Jun 17.
Abstract:
INTRODUCTION
Water consists of various isotopes of oxygen and hydrogen. Not only H and O, but also their sister isotopes of deuterium, D, and oxygen-18, commonly denoted as 18O. These isotopes are stable, in the sense that they do not disintegrate with time, and therefore they give every sample of water a distinct signat ure.
The isotopic characteristics of a sample of water can therefore be used to trace its origins, as has been done in the field of hydrogeology. This does however, sometimes require knowledge of the reactions that the water has undergone since those affect the isotopic composition of the water. In that manner, isotopic analysis of water samples has been used to trace the origins of leakage in a building, as described in previous work by the author (Gudmundsson, 2001). In this study it is shown how the isotopic composition of water is affected by some of the most common physical reactions and transport processes in buildings and building materials. This does not only contribute to a method of tracing the pathways of water in buildings but can also been used to measure the relevance of different transport processes in building
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