FprEN 934-7

SLOVENSKI STANDARD
oSIST prEN 934-7:2023
01-marec-2023
Kemijski dodatki za beton, malto in injekcijsko maso - 7. del: Kemijski dodatki za
zmanjšanje krčenja - Definicije, zahteve, skladnost, označevanje in etiketiranje
Admixtures for concrete, mortar and grout - Part 7: Shrinkage reducing admixtures -
Definitions, requirements, conformity, marking and labelling
Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 7: Schwindreduzierer -
Definitionen, Anforderungen, Konformität, Kennzeichnung und Beschriftung
Adjuvants pour bétons, mortier et coulis - Partie 7 : Agent réducteur de retrait -
Définitions, exigences, conformité, marquage et étiquetage
Ta slovenski standard je istoveten z: prEN 934-7
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
91.100.30 Beton in betonski izdelki Concrete and concrete
products
oSIST prEN 934-7:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 934-7:2023
oSIST prEN 934-7:2023
DRAFT
EUROPEAN STANDARD
prEN 934-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2023
ICS 91.100.10; 91.100.30
English Version
Admixtures for concrete, mortar and grout - Part 7:
Shrinkage reducing admixtures - Definitions,
requirements, conformity, marking and labelling
Adjuvants pour bétons, mortier et coulis - Partie 7 : Zusatzmittel für Beton, Mörtel und Einpressmörtel -
Agent réducteur de retrait - Définitions, exigences, Teil 7: Schwindreduzierer - Definitionen,
conformité, marquage et étiquetage Anforderungen, Konformität, Kennzeichnung und
Beschriftung
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 104.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 934-7:2023 E
worldwide for CEN national Members.

oSIST prEN 934-7:2023
prEN 934-7:2023 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Requirements . 5
4.1 General requirements . 5
4.2 Characteristics and requirements for shrinkage reducing admixtures . 5
5 Sampling . 5
6 Conformity criteria . 5
6.1 General. 5
6.2 Type testing . 6
6.3 Factory production control . 7
7 Attestation of conformity . 7
8 Marking and labelling . 9
8.1 General. 9
8.2 Designation of shrinkage reducing admixtures . 9
8.3 Additional information . 10

oSIST prEN 934-7:2023
prEN 934-7:2023 (E)
European foreword
This document (prEN 934-7:2023) has been prepared by Technical Committee CEN/TC 104 “Concrete
and related products”, the secretariat of which is held by SN.
This document is currently submitted to the CEN Enquiry.
The purpose of this document is to specify the requirements for shrinkage reducing admixtures, which
are not covered by the European standard EN 934-2:2009+A1:2012.
EN 934, Admixtures for concrete, mortar and grout, is currently composed with the following parts:
— Part 1: Common requirements
— Part 2: Admixtures for concrete, mortar and grout — Part 2: Concrete admixtures — Definitions,
requirements, conformity, marking and labelling
— Part 3: Admixtures for masonry mortar — Definitions, requirements, conformity, marking and labelling
— Part 4: Admixtures for grout for prestressing tendons — Definitions, requirements, conformity, marking
and labelling
— Part 5: Admixtures for sprayed concrete — Definitions, requirements, conformity, marking and
labelling
— Part 6: Sampling, assessment and verification of the constancy of performance
— Part 7: Shrinkage reducing admixtures (under preparation)
This European standard is used with the standards of the EN 480 series which comprises test methods
for admixtures and standard EN 12390-16, Testing hardened concrete — Part 16: Determination of the
shrinkage of concrete.
oSIST prEN 934-7:2023
prEN 934-7:2023 (E)
1 Scope
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 may 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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 480-1, Admixtures for concrete, mortar and grout — Test methods — Part 1: Reference concrete and
reference mortar for testing
EN 934-1:2008, Admixtures for concrete, mortar and grout — Part 1: Common requirements
EN 934-2:2009+A1:2012, Admixtures for concrete, mortar and grout — Part 2: Concrete admixtures —
Definitions, requirements, conformity, marking and labelling
EN 934-6:2019, Admixtures for concrete, mortar and grout — Part 6: Sampling, assessment and
verification of the constancy of performance
EN 12390-3, Testing hardened concrete — Part 3: Compressive strength of test specimens
EN 12390-7, Testing hardened concrete — Part 7: Density of hardened concrete
EN 12390-16, Testing hardened concrete — Part 16: Determination of the shrinkage of concrete
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 934-1, EN 934-2 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
shrinkage reducing admixture
admixture that, without water reduction, brings about a reduction in drying shrinkage of concrete
oSIST prEN 934-7:2023
prEN 934-7:2023 (E)
4 Requirements
4.1 General requirements
The requirements in this standard assume that admixtures are uniformly dispersed in concrete; special
attention shall be given to the dispersion of powder admixtures with retarding effects.
The shrin
...