ČSN EN 934-7
Přísady do betonu, malty a injektážní malty - Část 7: Přísady snižující smrštění - Definice, požadavky, shoda značení a označování štítkem

ČSN EN 934-7

This document specifies definitions, characteristics and requirements for shrinkage reducing admixtures for use in concrete.
It covers admixtures for plain, reinforced and prestressed concrete which are used in site mixed, ready mixed concrete and precast concrete.
The performance requirements in this document apply to admixtures used in concrete of normal consistence. They might not be applicable to admixtures intended for other types of concrete such as semi dry and earth moist mixes.
Provisions governing the practical application of admixtures in the production of concrete, i.e. requirements concerning composition, mixing, placing, curing, etc. of concrete containing admixtures are not part of this document.