SIST EN 934-5:2008
(Main)Admixtures for concrete, mortar and grout - Part 5: Admixtures for sprayed concrete - Definitions, requirements, conformity, marking and labelling
Admixtures for concrete, mortar and grout - Part 5: Admixtures for sprayed concrete - Definitions, requirements, conformity, marking and labelling
This European Standard defines and specifies requirements and conformity for admixtures specifically intended for use in sprayed concrete.
The types of admixtures covered are:
set accelerating and non-alkaline set accelerating admixtures;
consistence control admixtures;
bond improving admixtures.
Provisions governing the practical application of these admixtures in the production of sprayed concrete are not part of this European Standard.
Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 5: Zusatzmittel für Spritzbeton - Begriffe, Anforderungen, Konformität, Kennzeichnung und Beschriftung
In diesem Dokument werden Anforderungen und Konformitätskriterien für Zusatzmittel speziell für Spritzbeton
definiert und festgelegt.
Es werden folgende Zusatzmittel behandelt:
. Erstarrungsbeschleuniger und nicht alkalihaltige Erstarrungsbeschleuniger;
. Konsistenzregler;
. Verbundverbesserer
Festlegungen zur praktischen Anwendung dieser Zusatzmittel bei der Herstellung von Spritzbeton sind nicht
Gegenstand dieses Dokuments.
Adjuvants pour béton, mortier et coulis - Partie 5 : Adjuvants pour bétons projetés - Définitions, exigences, conformité, marquage et étiquetage
Le présent document définit et spécifie les exigences et la conformité pour les adjuvants destinés a etre
utilisés dans du béton projeté.
Les types d?adjuvants traités sont les suivants :
.accélérateurs de prise et accélérateurs de prise sans alcalins ;
.adjuvants témoins pour la consistance ;
.adjuvants améliorant l?adhérence.
Le présent document ne comporte pas de dispositions régissant l?application pratique de ces adjuvants dans
la production de béton projeté.
Kemijski dodatki za beton, malto in injekcijsko maso - 5. del: Kemijski dodatki za brizgani beton - Definicije, zahteve, skadnost, označevanje in obeleževanje
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 934-5:2008
01-marec-2008
.HPLMVNLGRGDWNL]DEHWRQPDOWRLQLQMHNFLMVNRPDVRGHO .HPLMVNLGRGDWNL]D
EUL]JDQLEHWRQ'HILQLFLMH]DKWHYHVNDGQRVWR]QDþHYDQMHLQREHOHåHYDQMH
Admixtures for concrete, mortar and grout - Part 5: Admixtures for sprayed concrete -
Definitions, requirements, conformity, marking and labelling
Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 5: Zusatzmittel für Spritzbeton -
Begriffe, Anforderungen, Konformität, Kennzeichnung und Beschriftung
Adjuvants pour béton, mortier et coulis - Partie 5 : Adjuvants pour bétons projetés -
Définitions, exigences, conformité, marquage et étiquetage
Ta slovenski standard je istoveten z: EN 934-5:2007
ICS:
91.100.10
SIST EN 934-5:2008 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 934-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2007
ICS 91.100.10
English Version
Admixtures for concrete, mortar and grout - Part 5: Admixtures
for sprayed concrete - Definitions, requirements, conformity,
marking and labelling
Adjuvants pour béton, mortier et coulis - Partie 5 : Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 5:
Adjuvants pour bétons projetés - Définitions, exigences, Zusatzmittel für Spritzbeton - Begriffe, Anforderungen,
conformité, marquage et étiquetage Konformität, Kennzeichnung und Beschriftung
This European Standard was approved by CEN on 13 August 2007.
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: rue de Stassart, 36 B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 934-5:2007: E
worldwide for CEN national Members.
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EN 934-5:2007 (E)
Contents Page
Foreword.3
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
3.1 General definitions .6
3.2 Specific definitions.6
4 Requirements.7
4.1 General requirements.7
4.2 Specific requirements .7
5 Sampling.10
6 Conformity control.10
7 Evaluation of conformity.11
8 Marking and labelling .11
8.1 General.11
8.2 Designation of admixtures.11
8.3 Additional information .11
Annex A (informative) Content and release of dangerous substances.12
Annex B (normative) Reference concrete for testing consistence control admixture .13
B.1 General.13
B.2 Cement content.13
B.3 Aggregates .13
B.4 Consistence.13
B.5 Compressive strength.14
B.6 Test report .14
Annex C (normative) Measurement of tensile bond strength.15
C.1 General.15
C.2 Preparation of the control and test mix.15
C.3 Applying the concrete and storage of specimens .15
C.4 Testing .16
C.5 Test report .16
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU
Construction Products Directive.17
ZA.1 Scope and relevant characteristics .17
ZA.2 Procedure for attestation of conformity of admixtures for sprayed concrete.19
ZA.2.1 System of attestation of conformity .19
ZA.2.2 EC certificate and declaration of conformity .20
ZA.3 CE marking and labelling.20
Bibliography .22
2
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EN 934-5:2007 (E)
Foreword
This document (EN 934-5:2007) 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 April 2008, and conflicting national standards shall be withdrawn at the
latest by July 2009.
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 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 European Standard is a part of the series EN 934 Admixtures for concrete, mortar and grout which is
comprised of the following parts:
1)
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 series EN 480 which comprises test methods for
admixtures.
Subject to the provisions in EN 14487-1, Sprayed concrete – Part 1: Definitions, specifications and conformity
admixtures covered by EN 934-2 may also be considered for the use in sprayed concrete.
A previous draft of EN 934-5 had been submitted to Formal Vote in 2004 and had formally passed the vote by
majority of CEN-members in 2005. Together with this vote, however, some members presented severe
technical comments which were agreed upon by the relevant CEN/TC 104/SC 3 to be taken into account by
an amendment. In order to avoid the need of using two separate papers in practice, CEN/TC 104 decided,
however, not to publish the agreed document but to submit a further consolidated version including the
amended issues to UAP, which finally should be published.
The amendments to the final draft prEN 934-5:2004-11 are the following:
- Table 1: requirements in line 5 (Conventional dry material content), 7 (Total chlorine) and 8 (Water soluble
chloride);
d
- Table 2: heading of table; curing conditions in footnote ;
1) This document is under preparation.
3
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EN 934-5:2007 (E)
- Table 3: heading of table;
- Table 4: heading of table;
- Table 5: minimum frequency of testing of alkali content;
- Annex B: new clauses B.4 and B.5 with more details of testing; new clause B.6, extending the test report;
- Annex C: detailing the testing in clause C.4.
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 the United Kingdom.
4
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EN 934-5:2007 (E)
1 Scope
This European Standard defines and specifies requirements and conformity for admixtures specifically
intended for use in sprayed concrete.
The types of admixtures covered are:
set accelerating and non-alkaline set accelerating admixtures;
consistence control admixtures;
bond improving admixtures.
Provisions governing the practical application of these admixtures in the production of sprayed concrete are
not part of this European 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 196-1, Methods of testing cement — Part 1: Determination of strength
EN 196-3, Methods of testing cement — Part 3: Determination of setting times and soundness
EN 197-1, Cement — Part 1: Composition, specifications and conformity criteria for common cements
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 480-6, Admixtures for concrete, mortar and grout — Test methods — Part 6: Infrared analysis
EN 480-8, Admixtures for concrete, mortar and grout — Test methods — Part 8: Determination of the
conventional dry material content
EN 480-10, Admixtures for concrete, mortar and grout — Test methods — Part 10: Determination of water
soluble chloride content
EN 480-12, Admixtures for concrete, mortar and grout — Test methods — Part 12: Determination of the alkali
content of admixtures
EN 934-6:2001, Admixtures for concrete, mortar and grout — Part 6: Sampling, conformity control and
evaluation of conformity
EN 1542:1999, Products and systems for the protection and repair of concrete structures — Test methods —
Measurement of bond strength by pull-off
EN 12350-2, Testing fresh concrete — Part 2: Slump test
EN 12350-5, Testing fresh concrete — Part 5: Flow table test
EN 12390-3, Testing hardened concrete — Part 3: Compressive strength of test specimens
5
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EN 934-5:2007 (E)
EN ISO 1158, Plastics — Vinyl chloride homopolymers and copolymers — Determination of chlorine content
(ISO 1158:1998)
ISO 758, Liquid chemical products for industrial use — Determination of density at 20 degrees C
ISO 4316, Surface active agents — Determination of pH of aqueous solutions — Potentiometric method
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions 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 European Standard
NOTE The compliance dosage should be within the recommended range of dosage.
3.1.3
recommended range of dosage
dosages between limits expressed in % by mass of cement that 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 European 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
control mix
prescribed mix without admixture
3.1.6
test mix
prescribed mix incorporating an admixture
3.2 Specific definitions
3.2.1
sprayed concrete admixture
material added to the concrete mix before or during the spraying process, in a quantity not exceeding 5 % by
mass of cement, except for sprayed concrete set accelerating admixture, where the dosage should not
exceed 12 %, to modify the properties of the mix in the fresh and/or hardened state
3.2.2
sprayed concrete set accelerating admixture
admixture to develop very early setting of the sprayed concrete differing from set accelerating admixtures as
defined and specified in EN 934-2
6
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EN 934-5:2007 (E)
3.2.3
non-alkaline sprayed concrete set accelerating admixture
sprayed concrete set accelerating admixture according to 3.2.2 with an alkali content (given as Na O-
2
equivalent) not exceeding 1,0 % by mass of the admixture
3.2.4
consistence control admixture
admixture that retains consistency for a long period
NOTE This type of admixture is normally used in combination with a compatible sprayed concrete set accelerating
admixture.
3.2.5
bond improving admixture
admixture added to the concrete mix before or during the process of spraying and which improves the bond
between the sprayed concrete layers and/or the substrate surface
4 Requirements
4.1 General requirements
All the admixtures defined in this European Standard shall conform to the general requirements given in
Table 1.
NOTE For requirements that lead to the CE-marking, see Table ZA.1.
4.2 Specific requirements
Additional to the general requirements in 4.1, the admixtures defined in 3.2.1 to 3.2.5 shall conform to the
following specific requirements:
Sprayed concrete set accelerating admixture Table 2
Non-alkaline sprayed concrete set accelerating admixture Table 2
Consistence control admixture Table 3
Bond improving admixture Table 4
These requirements shall be satisfied within the recommended range of dosage.
7
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EN 934-5:2007 (E)
i
Table 1 — General requirements
Property Test method Requirements
Homogeneous when used. Segregation shall not
a
1 Homogeneity Visual
exceed the limit stated by the manufacturer.
Uniform and similar to the description declared
a
2 Colour Visual
by the manufacturer.
Infrared spectra to show no significant change
with respect to the effective component when
a b
3 Effective component EN 480-6
compared to reference spectrum provided by the
manufacturer.
D ± 0,03 if D > 1,10
D ± 0,02 if D ≤ 1,10
a
4 ISO 758
Relative density
Where D is the manufacturer's stated value of
density.
0,95 T ≤ X < 1,05 T, if T ≥ 20 %
0,90 T ≤ X < 1,10 T, if T < 20 %
a c
5 Conventional dry material content EN 480-8
T is manufacturer's stated value % m/m.; X is
test result % by mass on dry material content.
a
pH-Value (only for liquid
Manufacturer's stated value ± 1 or within
6 admixtures) ISO 4316
manufacturer's stated range.
Either ≤ 0,10 % by mass or not above the
a d e
7 Total chlorine EN ISO 1158
manufacturer's stated range.
h
Either ≤ 0,10 % by mass or not above the
a
8 Water soluble chloride EN 480-10
manufacturer's stated range.
Not above the manufacturer's stated maximum.
a
Alkali content (Na O-equivalent)
9 EN 480-12
2
≤ 1,0 % by mass for non-alkaline sprayed
concrete set accelerating admixture.
No corrosion promotion effects on steel
f g
10 Corrosion behaviour
embedded in concrete.
a
Manufacturer's stated value shall be provided in writing, to the user, on request.
b
If the method in EN 480-6 is not suitable, the manufacturer shall recommend an alternative test method.
c
If the method in EN 480-8 is not suitable, the manufacturer shall recommend an alternative test method.
d
If there is no significant difference between total chlorine content and water soluble chloride content, only the water soluble chloride
content shall be determined in subsequent tests on the admixture involved.
e
The procedure in EN ISO 1158 shall be modified as follows:
increase the sample size to 0,1 g of dry admixture;
use silver nitrate and ammonium thiocyanate solutions 0,01 N.
f
For testing, cement CEM I with C A content less than 5 % by mass shall be used.
3
g
If admixtures are tested for corrosion behaviour, tests should be performed in accordance with EN 480-14
h
Where the chloride content is ≤ 0,10 % by mass, the admixture may be described as "chloride free".
i
Table 1 including European provisions for corrosion behaviour will be incorporated in EN 934-1, "Admixtures for concrete, mortar and
grout - Part 1: Common requirements" which is currently under development. Table 1 shall be used when EN 934-1 is published.
8
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EN 934-5:2007 (E)
Table 2 — Specific requirements for sprayed concrete set acceleration and non-alkaline set
acceleration admixtures at equal w/c ratio
Property Reference mortar Test Requirements
method
Initial setting time ≤ 10 min
Reference mortar
c
1 Setting time
EN 480-2 Final setting time ≤ 60 min
a b
EN 480-1
(average of three tests)
At 28 days:
Compressive strength of test mix ≥ 75 %
compressive strength of control mix or
≥ 90 % for non-alkaline accelerators.
Reference mortar
2 Compressive strength EN 196-1
a d e
EN 480-1
At 90 days:
Compressive strength of test mix ≥
compressive strength of test mix at
28 days.
a
The w/c ratio shall be ≤ 0,50 and such that the test mix shall have the standard consistence defined in EN 196-3 immediately prior to
addition of the admixture.
b
In difference to EN 480-1, the set accelerating admixture is added to a cement mortar of standard consistence, just before the end of
the mixing time. Adding the admixture, mixing and filling the mould, without undue segregation or vibration, shall be completed in a time
not exceeding 30 s.
c
The difference to EN 480-2, the total mass of the moving parts of the Vicat shall be (300 ± 2) g.
d
All components of the mortar shall be conditioned to a temperature of (5 ± 1) °C. The test specimen shall be stored at
(20 + 2) °C.
e
The set accelerating admixture is added to the mortar just before the end of the mixing time. The filling and compacting of the mould
with the mortar shall then be completed as quickly as possible.
Table 3 — Specific requirements for consistence control admixtures at equal consistence
Property Reference concrete Test method Requirements
Control mix:
Initial slump: 180 mm to 230 mm, or
EN 12350-2
initial flow: 480 mm to 550 mm.
(slump) or
1 Retention of consistence Annex B
EN 12350-5
6 h after addition of the admixture,
(flow)
the consistence of the test mix shall
be ≥ 80 % of the initial consistence
of the test mix.
At 28 days:
2 Compressive strength Annex B EN 12390-3
Compressive strength of test mix ≥
compressive strength of control mix
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EN 934-5:2007 (E)
Table 4 — Specific requirements for bond improving admixtures at equal consistence
Property Reference concrete Test method Requirements
Tensile bond strength between layers
1 Tensile bond strength Annex C Annex C at 28 days: test mix ≥ 125 % of control
mix
At 28 days:
Compressive strength of test mix
2 Compressive strength Annex C EN 12390-3
≥ 80 % of compressive strength of
control mix
5 Sampling
Requirements for sampling are given in EN 934-6.
6 Conformity control
Requirements for conformity control are given in EN 934-6:2001, 5.3 and 5.4. The frequency of testing in
connection with the factory production control is given in Table 5.
Table 5 — Minimum frequency of test for factory production control
Set accelerating
and non-alkaline Consistence Bond improving
Tests
control admixtures admixtures
set accelerating
admixtures
Homogeneity, colour B B B
Relative density (for liquids only) B B B
Conventional dry material content B B B
pH value (for liquids only) B B B
–
a
Chloride content (CI ) 4 4 4
Alkali content 2 2 2
Compressive strength at 28 days 1 1 1
Setting time A – –
Retention of consistence – A –
Tensile bond strength – – 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 1 000 t but not more than 3 times a year
B: means test each batch
NOTE The effective component (infrared analysis) need not be included in the programme of factory production
control. It has been included in initial type testing.
a Total chlorine content also has to be tested at this frequency if it is significantly different from the water soluble chloride
content.
10
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EN 934-5:2007 (E)
7 Evaluation of conformity
Requirements for evaluation of conformity are given in EN 934-6:2001, Clause 5.
8 Marking and labelling
8.1 General
When admixtures for sprayed concrete are supplied in containers they shall be clearly marked with the relevant
information listed in 8.2 and 8.3. When the material is supplied into a bulk container at the point of delivery, the
same information shall be provided in writing at the time of delivery.
NOTE For CE-marking and labelling ZA.3 applies.
8.2 Designation of admixtures
Admixtures for sprayed concrete shall be designated by:
a) name of type of admixture in the language of one member country;
b) number of this European Standard: EN 934-5;
c) code, to identify the type of admixture, consisting of the number of this European Standard and the
number of the table which gives the additional performance requirements for the particular type of
admixture.
EXAMPLE Set accelerating admixture for sprayed concrete; EN 934-5; T.2.
8.3 Additional information
a) batch number and production plant;
b) summary of storage requirements including any special requirements on storage life which shall be clearly
marked, e.g.: This admixture shall not be taken to comply with EN 934-5 after "date";
c) instructions for use and any necessary safety precautions, e.g. if caustic, toxic or corrosive;
d) manufacturer’s recommended range of dosage;
e) actions to be taken before use if segregation has occurred.
11
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EN 934-5:2007 (E)
Annex A
(informative)
Content and release of dangerous substances
NOTE For requirements regarding substances dangerous to health, hygiene and the environment that are relevant
for CE-marking, see Note 1 of ZA.1 and text after example in ZA.3.
12
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EN 934-5:2007 (E)
Annex B
(normative)
Reference concrete for testing consistence control admixture
B.1 General
The constituent materials and the preparation of the reference concrete shall be in accordance with the
requirements of EN 480-1 except as given in this annex below. The requirements for the consistence are
given in Table 3. All tests shall be carried out at the same consistence.
B.2 Cement content
The cement content shall be 450 kg/m³.
B.3 Aggregates
The sieve curve for the aggregate is given in Table B.1.
Table B.1 — Aggregate for reference concrete
a b
Sieve size
Percentage by mass passing the test sieve
mm
8,0 100
4,0 73 to 100
2,0 55 to 90
1,0 37 to 72
0,5 22 to 50
0,25 11 to 26
0,125 4 to 12
0,063 < 2
a
The range is selected to accommodate both crushed and uncrushed aggregate.
b
The variation in the quantity passing each sieve of the chosen grading for both mixes (control and test mix) shall not exceed
± 2,0 % by mass.
B.4 Consistence
Testing shall be carried out under standard laboratory conditions of (20 + 2) °C. The concrete shall be covered
with a plastic sheet to prevent evaporation during the standing period. The initial consistence of the reference
concrete shall be slump (180 mm to 230 mm) or flow (480 mm to 550 mm). This shall apply to both the test
and control mixes. The test mix only, shall be re-tested 6 h after mixing and shall have a consistence ≥ 80 %
of the initial consistence of the test mix.
13
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EN 934-5:2007 (E)
B.5 Compressive strength
Following the test for consistence, 6 h after adding the consistence control admixture, the test mix is returned
to the mixer. After 60 s mixing the mixer is stopped and the concrete is placed in the compressive strength
moulds. The concrete is cured in the moulds under standard laboratory conditions according to EN 12390-2
until it has fully set. It is then de-moulded and curing continued under standard laboratory conditions until the
age when it is to be tested for compressive strength.
A control mix at equal consistence (see B.4) is prepared at the same time as the test mix and placed in the
compressive strength moulds immediately after mixing. The concrete is cured under normal laboratory
conditions and tested for compressive strength at 28 days.
B.6 Test report
The test report shall include at least the following information:
Cement:
manufacturer and factory;
type;
class of strength in accordance with EN 197-1;
Consistence control admixture:
manufacturer;
type;
dosage;
individual and average results of slump or flow rounded to 5 mm;
individual and average results of compressive strength tests for control and test mixes.
14
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EN 934-5:2007 (E)
Annex C
(normative)
Measurement of tensile bond strength
C.1 General
This test is intended for laboratory use only. Test and control concrete mixes are prepared and used to make
the following test specimens each consisting of two layers:
a) control concrete to cont
...
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