ISO 22904:2020 增强混凝土

标准编号：ISO 22904:2020

中文名称：增强混凝土

英文名称：Additions for concrete

发布日期：2020-07

标准范围

本文件规定了硅灰、硅质粉煤灰和磨碎的粒状高炉矿渣用作生产符合ISO 22965标准的混凝土的II类添加剂的性能要求。根据本文件的添加剂也可用于砂浆和灌浆中。本文件适用于硅粉，其是用于生产金属硅和硅铁合金的熔炼过程的副产品。与其他类型或比本文件规定更高百分比的共燃材料产生的飞灰不在本文件范围内。含有除助磨剂和/或石膏（硫酸钙）之外的任何添加材料的研磨粒状高炉矿渣不在本文件的范围内。为混凝土、砂浆或灌浆生产中添加剂的实际应用规定不在本文件的范围内，即。e.关于组成、混合、放置、固化等的要求。注意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中还给出了关于配料、添加剂含量控制和k值概念使用的指导？2.

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.

标准预览图