scope:

This European Standard specifies the properties of lightweight aggregates and fillers derived thereof obtained by processing natural or manufactured materials and mixtures of these aggregates for concrete, mortar and grout, bituminous mixtures and surface treatments and for unbound and hydraulically bound applications for construction works. This European Standard covers lightweight aggregates of mineral origin having particle densities not exceeding 2000 kg/m3 (2,000 Mg/m3) or loose bulk densities not exceeding 1200 kg/m3 (1,200 Mg/m3) including: a) natural lightweight aggregates; b) lightweight aggregates manufactured from natural materials; c) lightweight aggregates manufactured from by-products of industrial processes or from recycled materials; d) lightweight aggregates as by-products of industrial processes. A list of the source materials that have been considered and are within the scope of this standard is given in Annex A (normative). NOTE 1 Recycled aggregates from construction and demolition waste and Municipal Solid Waste Incinerator Bottom Ash (MIBA) are covered by standards EN 12620, EN 13043, EN 13139 and EN 13242. Some lightweight aggregates for specific applications are covered in separate European product standards (Annex B, normative). This standard incorporates a general requirement that aggregates shall not release any dangerous substances in excess of the maximum permitted levels specified in a relevant European Standard for the material or permitted in the national regulations of the member state of destination. NOTE 2 Requirements for the declaration of the potential of aggregates to release regulated dangerous substances are currently under development. Until such time as these are finalised attention should be paid to requirements at the place of use. This standard also specifies that a quality control system is in place for use in factory production control and it provides for the evaluation of conformity of the products to this European Standard. The requirements specified in this standard may not be equally relevant to all types of lightweight aggregates. For particular applications the requirements and tolerances can be adapted for the end use.