Tagasi

ISO 22904:2020

Additions for concrete

Üldinfo
Kehtiv alates 17.07.2020
Tegevusala (ICS grupid)
91.100.30 Betoon ja betoontooted
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
17.07.2020
Põhitekst
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.
*
*
*
PDF
130,33 € koos KM-ga
Paber
130,33 € koos KM-ga
Standardi monitooring