EN 934-4:2009

Admixtures for concrete, mortar and grout - Part 4: Admixtures for grout for prestressing tendons - Definitions, requirements, conformity, marking and labelling

This European Standard defines and specifies requirements and conformity criteria for admixtures for the use in grouts for prestressing tendons according to EN 447. It covers admixtures for use in site ) mixed grout only.
Provisions for the use of grout admixtures are not part of this standard but are covered by EN 447.

Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 4: Zusatzmittel für Einpressmörtel für Spannglieder - Definitionen, Anforderungen, Konformität, Kennzeichnung und Beschriftung

Diese Europäische Norm enthält Definitionen, Festlegungen für Anforderungen und Konformitätskriterien für
Zusatzmittel für die Verwendung in Einpressmörtel für Spannglieder nach EN 447. Sie gilt nur für Zusatzmittel für
auf der Baustelle gemischten Einpressmörtel1).
Bestimmungen über die Anwendung von Zusatzmitteln für Einpressmörtel sind nicht Bestandteil dieser Norm,
sondern werden in EN 447 behandelt.

Adjuvants pour béton, mortier et coulis - Partie 4: Adjuvants pour coulis de câble de précontrainte - Définitions, exigences, conformité, marquage et étiquetage

La présente Norme Européenne définit et spécifie les exigences et les critères de conformité pour les adjuvants devant être utilisés dans les coulis pour câbles de précontrainte conformes à l'EN 447. Elle traite uniquement des adjuvants pour coulis fabriqué sur chantier.
Les dispositions relatives à l'utilisation des adjuvants pour coulis ne font pas partie de la présente norme mais sont traitées dans l'EN 447.

Kemijski dodatki za beton, malto in injekcijsko maso - 4. del: Kemijski dodatki za injekcijsko maso za prednapete kable - Definicije, zahteve, skladnost, označevanje in obeleževanje

General Information

• Status: Published
• Publication Date: 26-May-2009
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• 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: 18-Jun-2021
• Completion Date: 14-Apr-2025
• Directive: 305/2011 - 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
• Directive: 89/106/EEC - Construction products
• 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 934-4:2009 - Admixtures for concrete, mortar and grout - Part 4: Admixtures for grout for prestressing tendons - Definitions, requirements, conformity, marking and labelling

Relations

• Replaces: EN 934-4:2001 - Admixtures for concrete, mortar and grout - Part 4: Admixtures for grout for prestressing tendons - Definitions, requirements, conformity, marking and labelling
• Effective Date: 30-May-2009
• Replaces: EN 934-4:2001/A1:2004 - Admixtures for concrete, mortar and grout - Admixtures for grout for prestressing tendons - Part 4: Definitions, requirements, conformity, marking and labelling
• Effective Date: 30-May-2009

Overview

EN 934-4:2009 is the CEN European standard that defines requirements, conformity criteria, marking and labelling for admixtures for grout for prestressing tendons (site‑mixed grout only). It covers definitions, required test methods and performance limits for grout admixtures used in prestressing applications (see EN 447 for grout use provisions). The standard is part of the EN 934 series on admixtures for concrete, mortar and grout.

Key topics and technical requirements

• Scope and definitions: Admixture types (including expanding grout admixtures), compliance dosage and recommended dosage concepts.
• Test mix composition: Uses CEM I cements (strength classes 42.5 and 52.5) with specified fineness, water per EN 1008 and admixture at the manufacturer’s compliance dosage.
• Water/cement ratio: Adjusted to achieve required fluidity and must not exceed 0.42.
• Fluidity: Measured by cone method (EN 445). Immediate fluidity target for the specified test mix is 15 ± 3 s; 30 min after mixing ≤ 25 s.
• Mechanical properties: Compressive strength requirement for test mixes ≥ 30 MPa at 28 days (EN 445).
• Bleeding and volume change (Annex B):
  • Bleeding ≤ 2% of initial volume at 3 h.
  • Volume change S at 24 h: -1% ≤ S ≤ 5%, or 0 ≤ S ≤ 5% when testing expanding admixtures.
  • Test procedures and calculation methods are specified in Annex B.
• Mixing and preparation: Mechanical high‑shear mixing recommended; follow manufacturer mixing sequence.
• Conformity and factory production control: Sampling, conformity control and evaluation follow EN 934-6; minimum testing frequencies for FPC are specified (e.g., fluidity, bleeding, volume change frequency).
• Marking and labelling: Must include designation (EN 934-4:2009), type (admixture for grout or expanding admixture), batch number, storage life, homogenisation and use instructions, recommended dosage.
• CE marking: Provisions and attestation of conformity procedures are covered in informative Annex ZA in relation to the EU Construction Products Directive.

Applications

• Specification and quality control of grout admixtures used to inject ducts for prestressing tendons in precast and in‑situ prestressed concrete.
• Use by manufacturers to establish compliance dosages and labelling.
• Use by contractors, precast factories and testing laboratories to verify performance (fluidity, bleed, expansion, strength) before site application.

Who should use this standard

• Admixture manufacturers and formulators
• Precast concrete plants and site grout producers
• Prestressing contractors and designers
• Construction materials testing laboratories
• Certification bodies and conformity assessors

Related standards

• EN 934-1 (common requirements)
• EN 934-6 (sampling, conformity control)
• EN 447 (grout for prestressing tendons - use provisions)
• EN 445 (grout test methods)
• EN 197-1, EN 196-2/6, EN 1008 (cement and water testing)
• EN 480 series (admixture test methods)

Keywords: EN 934-4:2009, admixtures for grout, prestressing tendons, grout admixtures, fluidity, bleeding, volume change, CE marking, conformity control.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2009
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SIST EN 934-4:2002
SIST EN 934-4:2002/A1:2004
.HPLMVNLGRGDWNL]DEHWRQPDOWRLQLQMHNFLMVNRPDVRGHO.HPLMVNLGRGDWNL]D
LQMHNFLMVNRPDVR]DSUHGQDSHWHNDEOH'HILQLFLMH]DKWHYHVNODGQRVWR]QDþHYDQMH
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Admixtures for concrete, mortar and grout - Part 4: Admixtures for grout for prestressing
tendons - Definitions, requirements, conformity, marking and labelling
Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 4: Zusatzmittel für
Einpressmörtel für Spannglieder - Definitionen, Anforderungen, Konformität,
Kennzeichnung und Beschriftung
Adjuvants pour béton, mortier et coulis - Partie 4: Adjuvants pour coulis de câble de
précontrainte - Définitions, exigences, conformité, marquage et étiquetage
Ta slovenski standard je istoveten z: EN 934-4:2009
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
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 934-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2009
ICS 91.100.30 Supersedes EN 934-4:2001
English Version
Admixtures for concrete, mortar and grout - Part 4: Admixtures
for grout for prestressing tendons - Definitions, requirements,
conformity, marking and labelling
Adjuvants pour béton, mortier et coulis - Partie 4: Adjuvants Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 4:
pour coulis de câble de précontrainte - Définitions, Zusatzmittel für Einpressmörtel für Spannglieder -
exigences, conformité, marquage et étiquetage Definitionen, Anforderungen, Konformität, Kennzeichnung
und Beschriftung
This European Standard was approved by CEN on 24 April 2009.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 934-4:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Composition and preparation of test mix .5
4.1 Constituent materials .5
4.2 Water/cement ratio.5
4.3 Fluidity .5
4.4 Mixing .5
5 Requirements .5
5.1 General .5
5.2 Specific .5
5.3 Release of dangerous substances .6
6 Sampling .6
7 Conformity control.6
8 Evaluation of conformity .7
9 Marking and labelling .7
9.1 General .7
9.2 Designation of admixtures .7
9.3 Additional Information .8
Annex A (informative) Content and release of dangerous substances .9
Annex B (normative) Bleed and Volume Change test . 10
B.1 Principle . 10
B.2 Apparatus . 10
B.3 Procedure . 10
B.4 Reporting results . 10
B.4.1 Bleeding . 10
B.4.2 Volume change . 11
Annex ZA (informative) Provisions for the CE marking of admixtures for concrete under the EU
Construction Products Directive . 12
ZA.1 Clauses of this European Standard addressing the provisions of the EU Construction
Products Directive . 12
ZA.2 Procedure for attestation of conformity of admixtures for grout for prestressing tendons . 14
ZA.2.1 System of attestation of conformity . 14
ZA.2.2 EC certification and declaration of conformity . 15
ZA.3 CE marking and labelling . 16
Bibliography . 19

Foreword
This document (EN 934-4:2009) 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 November 2009, and conflicting national standards shall be withdrawn
at the latest by November 2009.
This document supersedes EN 934-4:2001.
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 EC Directive(s).
For relationship with EC 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 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, 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 and United Kingdom.
1 Scope
This European Standard defines and specifies requirements and conformity criteria for admixtures for the use
1)
in grouts for prestressing tendons according to EN 447. It covers admixtures for use in site mixed grout only.
Provisions for the use of grout admixtures are not part of this standard but are covered by EN 447.
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 196-2, Methods of testing cement — Part 2: Chemical analysis of cement
EN 196-6, Methods of testing cement — Determination of fineness
EN 197-1, Cement — Part 1: Composition, specifications and conformity criteria for common cements
EN 445, Grout for prestressing tendons — Test methods
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 1008, Mixing water for concrete — Specification for sampling, testing and assessing the suitability of water,
including water recovered from processes in the concrete industry, as mixing water for concrete
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
admixture for grout
material which improves the characteristics of grouts to be injected into ducts for prestressing tendons by
influencing their properties such as fluidity, expansion, volume change and bleeding, individually or in
combination
3.2
expanding grout admixture
admixture for use in grout which is intended to ensure that the initial volume of the liquid grout has not
reduced after hardening
3.3
compliance dosage
dosage of an admixture, quoted by the manufacturer in % by mass of cement, which will meet the
requirements of this standard and which is within the recommended range of dosage

1) For this standard site includes precast concrete factories.
3.4
recommended range of dosage
dosages between limits, which the manufacturer recommends for the product and are expressed in % by
mass of cement, 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 (see EN 446).
3.5
test mix
prescribed mix of cement, water and admixture
4 Composition and preparation of test mix
4.1 Constituent materials
a) Cement type CEM I strength classes 42,5 and 52,5 complying with EN 197-1, C A content 7 % to 11 %
by mass calculated from chemical analysis in accordance with EN 196-2 and a specific surface of 320
2 2
m /kg to 400 m /kg determined in accordance with EN 196-6.
b) Water in accordance with EN 1008.
c) Admixture for grout under test used at its compliance dosage.
4.2 Water/cement ratio
This shall be adjusted to provide the fluidity in 4.3 and shall not exceed 0,42.
4.3 Fluidity
The fluidity, measured by cone method in accordance with EN 445, at (20 ± 2) °C, immediately after mixing
shall be (15 ± 3) s
4.4 Mixing
This shall be carried out mechanically, with a high shear mixer, to obtain a homogeneous grout. Any
recommendations from the manufacturer of the admixture, regarding the mixing sequence, shall be followed.
5 Requirements
5.1 General
Admixtures for grout shall comply with Table 1 and EN 934-1:2008, Table 1, Line 1 to 8 and 10.
NOTE For requirements which lead to the CE-marking, see ZA.1
5.2 Specific
Test mixes shall comply with Table 1.
Table 1 — Requirements for grout admixtures
No Property Test method Requirements
1 Fluidity 30 min after EN 445
Cone method ≤ 25 s
a
mixing
a
2 Compressive strength EN 445
≥ 30 MPa at 28 days
3 Bleeding Annex B
≤ 2 % of initial volume at 3 h
4 Range of volume change Annex B
-1 % ≤ S ≤ 5 %
at 24 h
0 ≤ S ≤ 5 %, when testing expanding admixtures,
where S is the volume change
a
These requirements correspond with EN 447.

5.3 Release of dangerous substances
For content and release of substances from the hardened grout dangerous to health, hygiene and the
environment see Annex A (informative).
6 Sampling
Requirements for sampling are given in EN 934-6:2001
7 Conformity control
Requirements for conformity control are given in EN 934-6:2001. The frequency of testing in connection with
factory production control is given in Table 2.
Table 2 — Minimum frequency of test for factory production control of admixtures for grout for
prestressing tendons
Tests Frequency
Homogenity, colour B
Relative density (for liquids only) B
Conventional dry material content B
pH value (for liquids only) B
a
Chloride content (Cl)
Compressive strength 1
Fluidity A
Bleeding A
Volume change A
Numbers in this table denote minimum frequency of test per year, spread according to production; if the production is less frequent every
batch has to be tested.
A: means test for every 500 t with a minimum of 2 times a year
B: means test for each batch
a
Total chlorine content also has to be tested at this frequency if it is significantly different from the water soluble chloride content.
NOTE Effective component (infra red analysis) need not be included in the programme of factory production control. They shall
...