The research project shall provide answers to the questions:

- influence of climatic conditions such as temperature, humidity exposure on the electrical resistivity of cement based materials and on the corrosion rate for different concrete qualities,
- relation between concrete resistivity and corrosion rate and the limiting conditions,
- resistivity measurements for the prediction of the future corrosion behaviour.

Based on a laboratory study the research project shall establish quantitatively the influence of humidity and temperature as well as pore structure on the electrical resistivity of cement based materials.

In a second phase the influence of temperature on the (macro cell) corrosion of steel in concrete shall be investigated.