oSIST prEN 934-2:2014

SLOVENSKI STANDARD
01-december-2014
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Admixtures for concrete, mortar and grout - Part 2: Concrete admixtures - Definitions,
requirements, conformity, marking and labelling
Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 2: Betonzusatzmittel - Begriffe,
Anforderungen, Konformität, Kennzeichnung und Beschriftung
Adjuvants pour béton, mortier et coulis - Partie 2: Adjuvants pour bétons - Définitions,
exigences, conformité, marquage et étiquetage
Ta slovenski standard je istoveten z: prEN 934-2 rev
ICS:
01.040.91 Gradbeni materiali in gradnja Construction materials and
(Slovarji) building (Vocabularies)
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 01.040.91; 91.100.30 Will supersede EN 934-2:2009+A1:2012
English Version
Admixtures for concrete, mortar and grout - Part 2: Concrete
admixtures - Definitions, requirements, conformity, marking and
labelling
Adjuvants pour béton, mortier et coulis - Partie 2: Adjuvants Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 2:
pour bétons - Définitions, exigences, conformité, marquage Betonzusatzmittel - Begriffe, Anforderungen, Konformität,
et étiquetage 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 934-2 rev:2014 E
worldwide for CEN national Members.

prEN 934-2:2014 (E)
Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .5
3.1 General definitions .5
3.2 Specific definitions .5
4 Requirements .7
4.1 General requirements .7
4.2 Requirements for specific types of admixtures .7
4.3 Release of dangerous substances . 12
5 Sampling . 12
6 Conformity control. 12
7 Evaluation of conformity . 12
8 Marking and labelling . 13
8.1 General . 13
8.2 Designation of admixtures . 13
8.3 Additional Information . 13
Annex A (informative) Release of dangerous substances . 14
Annex B (normative) Factory production control . 15
Annex ZA (informative) Provisions for the CE marking of admixtures for concrete under the EU
Construction Products Regulation . 17
ZA.1 Clauses of this European Standard addressing the provisions of the EU Construction
Products Regulation . 17
ZA.2 Procedure for Assessment and Verification of Consistency of Performance (AVCP) of
admixtures for concrete . 20
ZA.2.1 Procedure for Assessment and Verification of Consistency of Performance . 20
ZA.2.2 EC certificate and declaration of conformity . 20
ZA.3 CE marking and labelling . 23

prEN 934-2:2014 (E)
Foreword
This document (prEN 934-2:2014) has been prepared by Technical Committee CEN/TC 104 “Concrete and
related products”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 934-2:2009+A1:2012.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
This standard is a part of the series EN 934, Admixtures for concrete, mortar and grout, which additionally
comprises the following parts:
 Part 1: Common requirements
 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, conformity control and evaluation of conformity
This European Standard is used with the standards of the EN 480 series which comprises test methods for
admixtures.
prEN 934-2:2014 (E)
1 Scope
This European Standard specifies definitions and requirements for 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 standard 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
standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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 480-2, Admixtures for concrete, mortar and grout — Test methods — Part 2: Determination of setting time
EN 480-4, Admixtures for concrete, mortar and grout — Test methods — Part 4: Determination of bleeding of
concrete
EN 480-5, Admixtures for concrete, mortar and grout — Test methods — Part 5: Determination of capillary
absorption
EN 480-11, Admixtures for concrete, mortar and grout — Test methods — Part 11: Determination of air void
characteristics in hardened concrete
EN 480-15, Admixtures for concrete, mortar and grout — Test methods — Part 15: Reference concrete and
method for testing viscosity modifying admixtures
EN 934-1:2008, Admixtures for concrete, mortar and grout — Part 1: Common requirements
EN 934-6:2001 Admixtures for concrete, mortar and grout — Part 6: Sampling, conformity control and
evaluation of conformity
EN 12350-2, Testing fresh concrete — Part 2: Slump test
EN 12350-5, Testing fresh concrete — Part 5: Flow table test
EN 12350-7, Testing fresh concrete — Part 7: Air content — Pressure methods
EN 12350-11, Testing fresh concrete — Part 11: Self-compacting concrete — Sieve segregation test
EN 12390-3, Testing hardened concrete — Part 3: Compressive strength of test specimens
prEN 934-2:2014 (E)
3 Terms and definitions
For the purposes of this document, the terms and definitions in EN 934-1:2008 and the following apply.
3.1 General definitions
3.1.1
performance
ability of an admixture to be effective in its intended use without detrimental effects
3.1.2
compliance dosage
dosage of an admixture, expressed in % by mass of cement, stated by the manufacturer which will meet the
requirements of this standard. The compliance dosage is within the recommended range of dosage
3.1.3
recommended range of dosage
dosages between limits expressed in % by mass of cement which the manufacturer recommends for the
product based on experience on site
Note 1 to entry: The use of the recommended dosage does not imply that compliance with this standard will be met
over the whole range. Trial tests should be carried out with the materials to be used on site to find the dosage necessary
to achieve the required result.
3.1.4
maximum recommended dosage
upper limit of the recommended range of dosage
3.1.5
reference concrete and mortar
concrete and mortar as specified in EN 480-1 for testing admixtures for conformity with this standard
3.1.6
multifunction admixture
admixture which affects several properties of fresh and/or hardened concrete by performing more than one of
the main functions defined in 3.2.2 to 3.2.9
3.1.7
primary function
single function of a multifunction admixture designated by the manufacturer
3.1.8
secondary function
function of a multifunction admixture which is additional to the primary function
3.2 Specific definitions
3.2.1
admixtures for concrete
material added during the mixing process of concrete in a quantity not more than 5 % by mass of the cement
content of the concrete, to modify the properties of the mix in the fresh and /or hardened state
3.2.2
water reducing/plasticizing admixture
admixture which without affecting the consistence, permits a reduction in the water content of a given concrete
mix, or which, without affecting the water content increases the slump/flow or produces both effects
simultaneously
prEN 934-2:2014 (E)
3.2.3
high range water reducing/superplasticizing admixture
admixture which, without affecting the consistence, permits a high reduction in the water content of a given
concrete mix, or which, without affecting the water content increases the slump/flow considerably, or produces
both effects simultaneously
3.2.4
water retaining admixture
admixture which reduces the loss of water by a reduction of bleeding
3.2.5
air entraining admixture
admixture which allows a controlled quantity of small, uniformly distributed air bubbles to be incorporated
during mixing which remain after hardening
3.2.6
set accelerating admixture
admixture which decreases the time to commencement of transition of the mix from the plastic to the rigid
state
3.2.7
hardening accelerating admixture
admixture which increases the rate of development of early strength in the concrete, with or without affecting
the setting time
3.2.8
set retarding admixture
admixture which extends the time to commencement of transition of the mix from the plastic to the rigid state
3.2
...