EN 934-2:2009+A1:2012

• Abstract:

  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.

• Status: Published
• Publication Date: 12-Jun-2012
• ICS: 01.040.91 - Construction materials and building (Vocabularies)
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: CEN/TC 104 - Concrete ( performance, production, placing and compliance criteria )
• Drafting Committee: CEN/TC 104/SC 3 - Admixtures for concrete
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 05-Jun-2019
• Completion Date: 16-Sep-2026
• Directive: Harmonized Standard305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
  OJ Ref: C, C 259 OJ Date: 08-Aug-2014
• Directive:

  ---

  Not Harmonized89/106/EEC - Construction products
  OJ Ref: C, C 59 OJ Date: 28-Feb-2013
• Mandate: M/128 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on products for concrete, mortar and grout
• Ref Project: SIST EN 934-2:2009+A1:2012 - Admixtures for concrete, mortar and grout - Part 2: Concrete admixtures - Definitions, requirements, conformity, marking and labelling

• Merged From: EN 934-2:2009 - Admixtures for concrete, mortar and grout - Part 2: Concrete admixtures - Definitions, requirements, conformity, marking and labelling
• Effective Date: 18-Jan-2023
• Merged From: EN 934-2:2009/FprA1 - Admixtures for concrete, mortar and grout - Part 2: Concrete admixtures - Definitions, requirements, conformity, marking and labelling
• Effective Date: 25-Apr-2012
• Refers: EN 12350-2:2019 - Testing fresh concrete - Part 2: Slump test
• Effective Date: 28-Jan-2026
• Refers: EN 480-5:2005 - Admixtures for concrete, mortar and grout - Test methods - Part 5: Determination of capillary absorption
• Effective Date: 28-Jan-2026
• Refers: EN 480-2:2006 - Admixtures for concrete, mortar and grout - Test methods - Part 2: Determination of setting time
• Effective Date: 28-Jan-2026
• Refers: EN 934-6:2001 - Admixtures for concrete, mortar and grout - Part 6: Sampling, conformity control and evaluation of conformity
• Effective Date: 28-Jan-2026
• Refers: EN 12350-5:2019 - Testing fresh concrete - Part 5: Flow table test
• Effective Date: 28-Jan-2026
• Refers: EN 480-4:2005 - Admixtures for concrete, mortar and grout - Test methods - Part 4: Determination of bleeding of concrete
• Effective Date: 28-Jan-2026
• Refers: EN 480-15:2023 - Admixtures for concrete, mortar and grout - Test methods - Part 15: Reference concrete and method for testing viscosity modifying admixtures
• Effective Date: 28-Jan-2026
• Refers: EN 12350-11:2010 - Testing fresh concrete - Part 11: Self-compacting concrete - Sieve segregation test
• Effective Date: 28-Jan-2026
• Refers: EN 12350-7:2019 - Testing fresh concrete - Part 7: Air content - Pressure methods
• Effective Date: 28-Jan-2026
• Refers: EN 480-1:2023 - Admixtures for concrete, mortar and grout - Test methods - Part 1: Reference concrete and reference mortar for testing
• Effective Date: 28-Jan-2026
• Refers: EN 12390-3:2019 - Testing hardened concrete - Part 3: Compressive strength of test specimens
• Effective Date: 28-Jan-2026
• Referred By: EN 206-1:2026 - Concrete - Specification, performance, production and conformity - Part 1: Performance, requirements, factory production control and assessment criteria for individual values
• Effective Date: 15-Apr-2026
• Referred By: EN 474-1:2006+A5:2018 - Earth-moving machinery - Safety - Part 1: General requirements
• Effective Date: 28-Jan-2026

Overview - EN 934-2:2009+A1:2012 (Concrete admixtures)

EN 934-2:2009+A1:2012 is the CEN European Standard that sets definitions, performance requirements, conformity procedures, marking and labelling for admixtures used in concrete. It applies to admixtures for plain, reinforced and prestressed concrete in site‑mixed, ready‑mixed and precast concrete. The standard targets admixtures for concrete of normal consistence and does not cover practical placing/mixing/cure procedures or some special mixes (e.g., semi‑dry or earth‑moist mixes).

Key topics and technical requirements

• Scope and definitions: Clear product definitions and terms (e.g., water‑reducing/plasticizing, high range water‑reducing/superplasticizing, set retarding/accelerating, air‑entraining, water‑retaining, water‑resisting, viscosity modifying, multifunction admixtures).
• Performance tables: Specific tests and pass criteria for each admixture type (examples in the standard):
  • Water‑reducing admixtures - minimum water reduction (≥ 5%) and compressive strength (≥ 110% at 7 and 28 days compared with control).
  • High‑range superplasticizers - minimum water reduction (≥ 12%), increased early strength (e.g., ≥ 140% at 1 day) and specified 28‑day strength requirements.
  • Air content, bleeding, capillary absorption and other properties are referenced to EN 480 and EN 12350/12390 test methods.
• Conformity & control: Sampling, factory production control (FPC), conformity assessment and evaluation procedures are specified (including Annex B for FPC).
• Release of dangerous substances: Requirements and informative guidance on hazardous substance release (Annex A).
• Marking, labelling & CE marking: Rules for designation, information to be supplied by manufacturer and provisions for CE marking under the EU Construction Products Directive (Annex ZA).

Practical applications and users

• Manufacturers of chemical admixtures: to design, label and declare conformity of products for the European market.
• Concrete producers and precast plants: to select admixtures meeting performance criteria for ready‑mixed, site‑mixed and precast applications.
• Testing laboratories & certification bodies: to perform EN 480 / EN 12350 / EN 12390 test methods and attest conformity.
• Specifiers, engineers and contractors: to reference standardised definitions and performance limits in specifications and tender documents.
• Regulatory authorities: to apply CE‑marking and compliance checks.

Related standards

• EN 934‑1 (Common requirements)
• EN 934 parts 3–6 (masonry, grout for prestressing, sprayed concrete, sampling/conformity)
• EN 480 series (test methods for admixtures)
• EN 12350 (fresh concrete tests) and EN 12390 (hardened concrete tests)

Keywords: EN 934-2:2009+A1:2012, concrete admixtures, performance requirements, conformity, CE marking, EN 480, EN 934.

SLOVENSKI STANDARD
01-december-2012
1DGRPHãþD
SIST EN 934-2:2009
.HPLMVNLGRGDWNL]DEHWRQPDOWRLQLQMHNFLMVNRPDVRGHO.HPLMVNLGRGDWNL]D
EHWRQ'HILQLFLMH]DKWHYHVNODGQRVWR]QDþHYDQMHLQHWLNHWLUDQMH
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 -
Definitionen, 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: EN 934-2:2009+A1:2012
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
EN 934-2:2009+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2012
ICS 01.040.91; 91.100.30 Supersedes EN 934-2:2009
English Version
Admixtures for concrete, mortar and grout - Part 2: Concrete
admixtures - Definitions, requirements, conformity, marking and
labelling
Adjuvants pour bétons, mortier et coulis - Partie 2: Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 2:
Adjuvants pour béton - Définitions, exigences, conformité, Betonzusatzmittel - Definitionen, Anforderungen,
marquage et étiquetage Konformität, Kennzeichnung und Beschriftung
This European Standard was approved by CEN on 24 April 2009 and includes Amendment 1 approved by CEN on 10 May 2012.

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. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 934-2:2009+A1:2012: E
worldwide for CEN national Members.

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 . 13
5 Sampling . 13
6 Conformity control. 13
7 Evaluation of conformity . 13
8 Marking and labelling . 14
8.1 General . 14
8.2 Designation of admixtures . 14
8.3 Additional Information . 14
Annex A (informative) Release of dangerous substances . 15
Annex B (normative) !!!!Factory production control"""" . 16
Annex ZA (informative) Provisions for the CE marking of admixtures for concrete under the EU
Construction Products Directive . 18
ZA.1 Clauses of this European Standard addressing the provisions of the EU Construction
Products Directive . 18
ZA.2 Procedure for attestation of conformity of admixtures for concrete . 21
ZA.2.1 System of attestation of conformity . 21
ZA.2.2 EC certificate and declaration of conformity . 22
ZA.3 CE marking and labelling . 23

Foreword
This document (EN 934-2:2009+A1:2012) has been prepared by Technical Committee CEN/TC 104
“Concrete and related products”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by December 2012, and conflicting national standards shall be withdrawn
at the latest by December 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes !EN 934-2:2009".
This document includes Amendment 1 approved by CEN on 2012-05-10.
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ".
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 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.
The annexes A and ZA are informative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: 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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.

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 referenced documents are indispensable for the application 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 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
!prEN 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
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 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
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
3.2.9
water resisting admixture
admixture which reduces the capillary absorption of hardened concrete
3.2.10
set retarding/water reducing/plasticizing admixture
admixture which produces the combined effects of a water reducing/plasticizing admixture (primary function)
and a set retarding admixture (secondary function)
3.2.11
set retarding/high range water reducing/superplasticizing admixture
admixture which produces the combined effects of a high range water reducing/superplasticizing admixture
(primary function) and a set retarding admixture (secondary function)
3.2.12
set accelerating/water reducing/plasticizing admixture
admixture which produces the combined effects of a water reducing/plasticizing admixture (primary function)
and a set accelerating admixture (secondary function)
!!!!3.2.13
viscosity modifying admixture
admixture incorporated in concrete to limit segregation by improving cohesion"
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.
All admixtures defined in !3.2.2 to 3.2.13" shall conform the general requirements in EN 934-1:2008
Table 1, Clause 5 and Clause 6.
NOTE For requirements which lead to the CE-marking, see Table ZA.1 of Annex ZA.
4.2 Requirements for specific types of admixtures
The admixtures defined in !3.2.2 to 3.2.13" shall comply with the requirements listed in Table 1:
Table 1 — Performance requirements for specific types of admixture
Definition Name of admixture Performance requirements
3.2.2 Water reducing/plasticizing admixtures Table 2
3.2.3 High range water reducing/superplasticizing admixtures Tables 3.1 and 3.2
3.2.4 Water retaining admixtures Table 4
3.2.5 Air entraining admixture Table 5
3.2.6 Set accelerating admixtures Table 6
3.2.7 Hardening accelerating admixtures Table 7
3.2.8 Set retarding admixtures Table 8
3.2.9 Water resisting admixtures Table 9
3.2.10 Set retarding/water reducing/plasticizing admixtures Table 10
3.2.11 Set retarding/high range water reducing/superplasticizing Tables 11.1 and 11.2
admixtures
3.2.12 Set accelerating/water reducing/plasticizing admixtures Table 12
!3.2.13 Viscosity modifying admixture Table 13"

Where manufacturer's stated values are required these shall be provided in writing on request.
Table 2 — Specific requirements for water reducing/plasticizing admixtures (at equal consistence)
No Property Reference concrete Test method Requirements
1 Water reduction EN 480-1 slump EN 12350-2 or
In test mix ≥ 5 % compared with
reference concrete I flow EN 12350-5
control mix
2 Compressive EN 480-1 EN 12390-3 At 7 and 28 days:
strength reference concrete I
Test mix ≥ 110 % of control mix
3 Air content in EN 480-1 EN 12350-7
Test mix ≤ 2 % by volume above
fresh concrete reference concrete I
control mix unless stated
otherwise by the manufacturer
Table 3.1 — Specific requirements for high range water reducing/super plasticizing admixtures
(at equal consistence)
No Property Reference concrete Test method Requirements
1 Water reduction EN 480-1 slump EN 12350-2 or
In test mix ≥ 12 % compared with
reference concrete I flow EN 12350-5 control mix
2 Compressive EN 480-1 EN 12390-3 At 1 day:
strength reference concrete I
Test mix ≥ 140 % of control mix
At 28 days:
Test mix ≥ 115 % of control mix
3 Air content in EN 480-1 EN 12350-7
Test mix ≤ 2 % by volume above
fresh concrete reference concrete I
control mix unless otherwise
stated by the manufacturer
Table 3.2 — Specific requirements for high range water reducing/super plasticizing admixtures
a
(at equal w/c ratio)
No Property Reference concrete Test method Requirements
1 Increase in EN 480-1 slump EN 12350-2 or
Increase in slump ≥ 120 mm from
consistence reference concrete IV flow EN 12350-5
initial (30 ± 10) mm
Increase in flow ≥ 160 mm from
initial (350 ± 20) mm
2 Retention of EN 480-1 slump EN 12350-2 or 30 min after the addition the
consistence reference concrete IV flow EN 12350-5 consistence of the test mix shall
not fall below the value of the
initial consistence of the control
mix
3 Compressive EN 480-1 EN 12390-3 At 28 days:
strength reference concrete IV
test mix ≥ 90 % of control mix
4 Air content in EN 480-1 EN 12350-7
Test mix ≤ 2 % by volume above
fresh concrete reference concrete IV
control mix unless otherwise
stated by the manufacturer
a
The compliance dosage for admixtures used to meet the requirements of Table 3.2 does not have to be
the same as that used to meet the requirements of Table 3.1.

Table 4 — Specific requirements for water retaining admixtures (at equal consistence)
No Property Reference concrete Test method Requirements
1 Bleeding EN 480-1 EN 480-4
Test mix ≤ 50 % of control mix
reference concrete II
2 Compressive EN 480-1 EN 12390-3 At 28 days:
strength reference concrete II
Test mix ≥ 80 % of control mix
3 Air content in EN 480-1 EN 12350-7
Test mix ≤ 2 % by volume above
fresh concrete reference concrete II control mix unless stated otherwise by
the manufacturer
Table 5 — Specific requirements for air entraining admixtures (at equal consistence)
a
No Property Reference concrete Test method
Requirements
1 Air content in EN 480-1 EN 12350-7 Test mix ≥ 2,5 % by volume above
fresh concrete reference concrete III
control mix
(entrained air) Total air content 4 % to 6 % by
volume
b
2 Air void EN 480-1 EN 480-11
Spacing factor in test mix ≤ 0,200 mm
characteristics reference concrete III
in hardened
concrete
3 Compressive EN 480-1 EN 12390-3
At 28 days : test mix ≥ 75 % of control
strength reference concrete III
mix
a
All the requirements apply to the same test mix.
b
EN 480-11 is the reference method. Other methods of determining the spacing factor (e. g. modified point count method) may be
used provided that they can be shown to give essentially the same results as the method in EN 480-11.
Table 6 — Specific requirements for set accelerating admixtures (at equal consistence)
Reference
No Property Test method Requirements
mortar/concrete
1 Initial setting EN 480-1 EN 480-2
At 20° C: test mix ≥ 30 min
time mortar
At 5° C : test mix ≤ 60 % of
control mix
2 Compressive EN 480-1 EN 12390-3 At 28 days:
strength reference concrete I
Test mix ≥ 80 % control mix
At 90 days:
Test mix ≥ test mix at 28 days
3 Air content in EN 480-1 EN 12350-7
Test mix ≤ 2 % by volume above
fresh concrete reference concrete I
control mix unless stated
otherwise by the manufacturer
Table 7 — Specific requirements for hardening accelerating admixtures (at equal consistence)
No Property Reference concrete Test method Requirements
1 Compressive EN 480-1 EN 12390-3
At 20° C and 24 h: test mix ≥ 120 % of
strength reference concrete I
control mix
At 20° C and 28 days: test mix ≥ 90 %
of control mix
At 5° C and 48 h: test mix ≥ 130 % of
control mix
2 Air content in EN 480-1 EN 12350-7
Test mix ≤ 2 % by volume above control
fresh concrete reference concrete I
mix unless otherwise stated by the
manufacturer
Table 8 — Specific requirements for set retarding admixtures (at equal consistence)
Reference
No Property Test method Requirements
mortar/concrete
1 Setting time EN 480-1 EN 480-2
Initial: test mix ≥ control mix + 90 min
mortar
Final: test mix ≤ control mix + 360 min
2 Compressive EN 480-1 EN 12390-3 At 7 days:
strength reference concrete I
Test mix ≥ 80 % control mix
At 28 days:
Test mix ≥ 90 % of control mix
3 Air content in EN 480-1 EN 12350-7
Test mix ≤ 2 % by volume above
fresh concrete reference concrete I
control mix unless otherwise stated by
the manufacturer
Table 9 — Specific requirements for water resisting admixtures
a
(at equal consistence or equal w/c ratio )
Reference
No Property Test method Requirements
mortar/concrete
1 Capillary EN 480-1 EN 480-5 Tested for 7 days after 7 days curing :
absorption mortar
test mix ≤ 50 % by mass of control mix
Tested for 28 days after 90 days
curing : test mix ≤ 60 % by mass of
control mix
2 Compressive EN 480-1 EN 12390-3 At 28 days : test mix ≥ 85 % of control
strength reference concrete I
mix
3 Air content in EN 480-1 EN 12350-7
Test mix ≤ 2 % by volume above control
fresh concrete reference concrete I mix unless otherwise stated by the
manufacturer
a
All tests shall be performed either at equal consistence or equal w/c ratio.

Table 10 — Specific requirements for set retarding/water reducing/plasticizing admixtures
(at equal consistence)
Reference
No Property Test method Requirements
concrete/mortar
1 Compressive EN 480-1 EN 12390-3
At 28 days: test mix ≥ 100 % of
strength reference concrete I control mix
2 Setting time EN 480-1 EN 480-2 Initial: test mix ≥ control mix + 90 min
mortar
Final: test mix ≤ control mix + 360 min
3 Water reduction EN 480-1 slump EN 12350-2
In test m
...