This UNE Standard defines and presents the specifications for 4 different types of common cement with ground bottom ash from coal-fired power plants and the cement constituent called bottom ash produced in coal-fired power plants. The definition of each cement includes the proportions in which its constituents must be combined to produce the different cement types in a range of six different strength classes (32.5N, 32.5R, 42.5N, 42.5R, 52.5N and 52.5R). The definition also includes the requirements to be met by the constituents and the mechanical, physical and chemical requirements of the 4 types of cement. Likewise, this UNE Standard establishes the conformity criteria and the applicable rules. On the other hand, it also includes the necessary requirements on