The harmonization of Romanian regulations with the European ones has led to significant changes regarding the rules for concrete production, for design and execution of the elements and structures. The enforcement, in Romania staring with 2002 year of the European standards continuing to require significant changes regarding minimum strength classes and concrete works’ execution conditions.

The national infrastructure development program has become a priority in Romania. This aspect together with the additional strength and durability requirements make it necessary to use specialized high-strength cements.

The article shows the main features of cement CEM I 52,5R as well as the results of some studies carried out on concrete prepared with this type of cement.