Bituminous mixtures - Test methods for hot mix asphalt - Part 7: Determination of bulk density of bituminous specimens by gamma rays
沥青混合物 - 热拌沥青的试验方法 - 第7部分:通过γ射线测定沥青样品的体积密度
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.
The safety regulations applicable to the use of gamma rays should be applied.
This European Standard applies to cylindrical specimens or blocks, prepared in a laboratory or cut from a pavement, the thickness and the mass absorption coefficient which is a function of the chemical composition are known. The thickness of the specimen body traversed by the radiation shall be between 30 mm and 300 mm. The method cannot be applied to materials containing slags, with variable metal content or chemical composition which may affect the absorption of gamma rays.