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作废 EN 12697-7:2014
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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
发布日期: 2014-05-07
本欧洲标准规定了使用透射型γ辐射试验台测量路面混合物的体积密度的方法。 该欧洲标准的适用性在沥青混合物的产品标准中有所描述。 应适用于使用γ射线的安全规定。 本欧洲标准适用于在实验室中制备的或从路面切割的圆柱形样品或块,其厚度和质量吸收系数是化学成分的函数。被辐射穿过的试样体的厚度应在30 mm到300 mm之间。该方法不能应用于含有可能影响γ射线吸收的可变金属含量或化学成分的含有炉渣的材料
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.
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归口单位: CEN/TC 227-
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