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C. Hecht, J. Dreyer, D. Hauer, T. Bednar:
"Thermal dilatation after injection of different building materials";
Talk: Building Physics in the Nordic Countries, Trondheim, Norway; 2002-06-17 - 2002-06-19; in: "Proceedings of the 6th Symposium on Building Physics in the Nordic Countries", Vol. 2 (2002), 691 - 696.

A high moisture content in building materials generate different and significant destruction’s. To increase the durability of building materials a treatment is necessary. For the reconstruction of building materials damaged through moisture are existing different methods. For example surface treatments or injections with different agents. The safety success of reconstruction is the improvement of the effectiveness by the methods.
With a injection of chemical products or others the material properties will be changed in penetrated areas. After treatments we have different material characteristics in a small area: dry, wet and injected.
To describe how easy to get on the different materials in most cases only strength proved. Our measurements show also a change of dilatation after treatment. To describe the long term material behaviour it is necessary to know the thermal and hygrical dilatation.
The interaction between dilatation and development of flexural and compressive strength is important for several processes: ageing, detoration and durability.
The paper describe our equipment, measurments and different results.