混凝土添加物

[中文适用范围]： 本文件规定了硅粉、硅质粉煤灰和磨碎的粒状高炉矿渣的性能要求，用作生产混凝土的 II 类添加剂，符合本文件适用于所用冶炼过程的副产品硅粉。 生产金属硅和硅铁合金。 使用其他类型或比例高于本文件规定的共燃材料生产的飞灰不属于本文件的范围。 含有除助磨剂和/或石膏（硫酸钙）之外的任何添加材料的磨细粒化高炉矿渣不属于本文件的范围。 详细说明混凝土、砂浆或灌浆生产中添加物实际应用的规定，即有关成分、混合、浇筑、固化等的要求，不属于本文件的范围。 注：ISO 22965-中给出了一些规则2，例如关于添加剂的一般适用性和使用的规定。 ISO 22965-2 中还给出了有关配料、添加量控制和 k 值概念使用的指南。 [外文原描述]： This document specifies requirements for the properties for silica fume, siliceous fly ash and ground granulated blastfurnace slag for use as a type II addition for production of concrete conforming to ISO 22965. Additions according to this document can also be used in mortars and grouts. This document applies to the silica fume which is a by-product of the smelting process used to produce silicon metal and ferro-silicon alloys. Fly ash produced with other types or higher percentages of co-combustion materials than those provided for in this document is outside the scope of this document. Ground granulated blastfurnace slag containing any added materials other than grinding aids and/or gypsum (calcium sulfate) is not within the scope of this document. It is not within the scope of this document to specify provisions for the practical application of additions in the production of concrete, mortar or grout, i.e. requirements concerning composition, mixing, placing, curing, etc. NOTE Some rules are given in ISO 22965‑2, e.g. provisions on general suitability and use of additions. Guidance on batching, control of additions content and the use of the k -value concept are also given in ISO 22965‑2.