BS ISO 22904:2020
混凝土添加剂
Additions for concrete
- 标准号
- BS ISO 22904:2020
- 发布
- 2020年
- 发布单位
- 英国标准学会
- 当前最新
- BS ISO 22904:2020
- 适用范围
- What is ISO 22904 about? ISO 22904 is an international standard on a dditions for concrete. ISO 22904 specifies requirements for the properties for silica fume, siliceous fly ash and ground granulated blast furnace slag for use as a type II addition for the production of concrete. NOTE: Fly ash produced with other types or higher percentages of co-combustion materials than those provided is not included in ISO 22904. Ground granulated blast-furnace slag containing any added materials other than grinding aids and/or gypsum (calcium sulphate) is not included in ISO 22904 . ISO 22904 does not 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. Who is ISO 22904 for? ISO 22904 on additions for concrete is useful for: