混凝土用天然骨料

[中文适用范围]： 本文件规定了通过加工天然材料和这些骨料的混合物获得的用于混凝土的骨料的特性和要求。适用于烘箱干燥颗粒密度大于2.00 Mg/m3（2000 kg/m3）的骨料，符合ISO 22965（所有部分）的要求。 本文件包含一个一般要求，即天然骨料不应释放超过材料或使用地国家法规允许的最大水平的有害物质。 国家规定，最好在国家附件或项目规范中规定，可以指定附加或不同的要求。 注：骨料在混凝土中的最终使用要求在ISO 22965（所有部分）中规定。 [外文原描述]： ISO 19595:2017 specifies the properties and requirements of aggregates obtained by processing natural materials and mixtures of these aggregates for use in concrete. It is applicable to aggregates with an oven-dried particle density greater than 2,00 Mg/m3 (2 000 kg/m3) in accordance with ISO 22965 (all parts). ISO 19595:2017 incorporates a general requirement that natural aggregates are not intended to release any harmful substances in excess of the maximum permitted levels specified for the material or permitted in the national regulations of the place in use. National provisions, preferably given in a national annex or a project specification, can specify additional or deviating requirements. NOTE Requirements for the end use of aggregates in concrete are specified in ISO 22965 (all parts).