This European Standard specifies a method for measuring the bulk density of pavement mixtures using a transmission-type gamma radiation test bench. The applicability of this European Standard is described in the product standards for bituminous mixtures. NOTE The safety regulations applicable to the use of gamma rays should be applied. This standard is applicable to cylindrical specimens or blocks, prepared in a laboratory or cut from a pavement, for which the thickness and the mass absorption coefficient, which is a function of the chemical composition are known. The thickness of the specimen traversed by the radiation should be between 30 mm and 300 mm. This method does not apply to mixtures containing slags, with variable metal content or chemical composition which can affect the absorption of gamma rays.