It was the main goal of this study to get a first insight of the role of limestone as a mineral admixture of cement concerning the hydration process as well as the mechanical properties, the frost- and frost/de-icing salt resistance of mortar and concrete prepared with the use of limestone containing cement (up to 30 m% limestone). Furthermore, questions concerning the influence of limestone on the behaviour of concrete admixtures (plasticisers, air entraining agents etc.) and questions concerning the corrosion of reinforcements had been studied.