This European Standard specifies the properties of aggregates and filler aggregates obtained by processing natural, manufactured or recycled materials and mixtures of these aggregates for use in mortar, e.g., a) masonry mortar, b) floor/screed mortar, c) surfacing of internal walls (plastering mortar), d) rendering of external walls, e) special bedding materials, f) repair mortar, g) grouts, for buildings, roads and civil engineering works. This standard does not cover filler aggregates to be used as a constituent in cement or as other than inert filler aggregates for mortars or aggregates to be used in the surface layer of industrial floors. It provides for the evaluation of conformity of the products to this European Standard. NOTE 1 The requirements in this European Standard are based upon experience with aggregate types with an established pattern of use. Care should be taken when considering the use of aggregates from sources with no such pattern of use, e.g., recycled aggregates and aggregates arising from certain industrial by-products. Such aggregates, which should comply with all the requirements of this European Standard, could have other characteristics not included in Mandate M 125 that do not apply to the generality of aggregates types with an established pattern of use and when required, provisions valid at the place of use can be used to assess their suitability. NOTE 2 Properties for lightweight aggregates are specified in prEN 13055-1.