This European Standard specifies the properties of lightweight aggregates and fillers derived thereof obtained by processing natural, manufactured or recycled materials and mixtures of these aggregates for bituminous mixtures and surface treatments and for unbound and hydraulically bound applications other than concrete, mortar and grout. This European Standard covers lightweight aggregates of mineral origin having particle densities not exceeding 2000 kg/m3 (2,00 Mg/m3) or loose bulk densities not exceeding 1200 kg/m3 (1,20 Mg/m3) including: a) natural aggregates; b) aggregates manufactured from natural materials and/or from by-products of industrial processes; c) by-products of industrial processes; d) recycled aggregates. It provides for the evaluation of conformity of the products to this European Standard. The requirements specified in this standard may not be relevant to all types of lightweight aggregates. For particular applications the requirements and tolerances can be adapted for the end use. NOTE Aggregates used in construction should comply with all the requirements of this European Standard. As well as familiar and traditional natural and manufactured aggregates Mandate M/125 "Aggregates" included recycled aggregates and some materials from new or unfamiliar sources. Recycled aggregates are included in the standards and new test methods for them are at an advanced stage of preparation. For unfamiliar materials from secondary sources, however, the work on standardization has only started recently and more time is needed to define clearly the origins and characteristics of these materials. In the meantime such unfamiliar materials when placed on the market as aggregates should comply fully with this standard and national regulations for dangerous substances (see annex ZA) depending upon their intended use. Additional characteristics and requirements can be specified on a case by case basis depending upon experience of use of the product, and defi