EN 934-2:2001
(Main)Admixtures for concrete, mortar and grout - Part 2: Concrete admixtures - Definitions, requirements, conformity, marking and labelling
Admixtures for concrete, mortar and grout - Part 2: Concrete admixtures - Definitions, requirements, conformity, marking and labelling
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.
Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 2: Betonzusatzmittel - Definitionen, Anforderungen, Konformität, Kennzeichnung und Beschriftung
Diese Europäische Norm legt Begriffe und Anforderungen für Zusatzmittel für Beton fest.
Sie gilt für Zusatzmittel für unbewehrten Beton, Stahl- und Spannbeton, die für Ort- und Transportbeton sowie für Beton für Fertigteile verwendet werden.
Die Leistungsanforderungen nach dieser Norm gelten für Zusatzmittel, die für Beton mit üblicher Konsistenz verwendet werden. Sie müssen nicht für Zusatzmittel für andere Arten von Beton, wie z. B. halbtrockene und erdfeuchte Mischungen anwendbar sein.
Diese Norm gilt nicht für Bestimmungen zur praktischen Anwendung von Zusatzmitteln bei der Herstellung von Beton, d. h. Anforderungen bezüglich der Zusammensetzung, der Mischung, der Verarbeitung und der Nachbehandlung usw. von Beton, der Zusatzmittel sind nicht Gegenstand dieser Norm.
Adjuvants pour béton, mortier et coulis - Partie 2: Adjuvants pour béton - Définitions, exigences, conformité, marquage et étiquetage
La présente Norme européenne fixe les définitions et les exigences pour les adjuvants utilisés dans les bétons.
Elle s'applique aux adjuvants pour bétons non armés, armés et précontraints utilisés dans les bétons fabriqués sur chantier, prêts à l'emploi et préfabriqués.
Dans cette norme, les exigences de performance s'appliquent aux adjuvants utilisés dans un béton de consistance normale. Elles peuvent ne pas être applicables aux adjuvants destinés à d'autres types de béton tels que des bétons à consistance terre humide.
Les dispositions qui régissent l'utilisation pratique des adjuvants dans la production de béton, telles que les exigences relatives à la composition, au malaxage, aux conditions de mise en ¿uvre, à la cure, etc., du béton adjuvanté, ne sont pas traitées par la présente norme.
Kemijski dodatki za beton, malto in injekcijsko maso - 2. del: Kemijski dodatki za beton - Definicije, zahteve, skladnost, označevanje in obeleževanje
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2002
1DGRPHãþD
SIST EN 934-2:1998
.HPLMVNLGRGDWNL]DEHWRQPDOWRLQLQMHNFLMVNRPDVRGHO .HPLMVNLGRGDWNL]D
EHWRQ'HILQLFLMH]DKWHYHVNODGQRVWR]QDþHYDQMHLQREHOHåHYDQMH
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 béton - Définitions,
exigences, conformité, marquage et étiquetage
Ta slovenski standard je istoveten z: EN 934-2:2001
ICS:
01.040.91
91.100.30
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 934-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2001
ICS 01.040.91; 91.100.30 Supersedes EN 934-2:1997
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 béton - Définitions, exigences, conformité, marquage Betonzusatzmittel - Definitionen, Anforderungen,
et étiquetage Konformität, Kennzeichnung und Beschriftung
This European Standard was approved by CEN on 2 May 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, 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
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 934-2:2001 E
worldwide for CEN national Members.
Contents
page
Foreword . 3
1 Scope . 3
2 Normative references . 3
3 Terms and definitions . 4
4 Requirements . 6
4.1 General requirements . 6
4.2 Requirements for specific types of admixtures . 6
4.3 Release of dangerous substances . 13
5 Sampling . 13
6 Conformity control . 13
7 Evaluation of conformity . 13
8 Marking and labelling . 15
8.1 General . 15
8.2 Designation of admixtures . 15
8.3 Additional information . 15
Annex A (informative) - Release of dangerous substances . 16
Annex ZA (informative) -Provisions for the CE-marking of admixtures for concrete under the EU Construction
Products Directive . 16
ZA.1 Clauses of this European standard addressing the provisions of the EU Construction Products Directive 16
ZA.2 Procedure for attestation of conformity of admixtures for concrete . 20
ZA.3 CE marking and labelling . 21
Table
Table 1 – General Requirements . 8
Table 2 – Specific requirements for water reducing/plasticizing admixtures (at equal consistence) . 9
Table 3.1 – Specific requirements for high range water reducing/super plasticizing admixtures
(at equal consistence) . 9
Table 3.2 – Specific requirements for high range water reducing/super plasticizing admixtures
(at equal w/c ratio) . 9
Table 4 – Specific requirements for water retaining admixtures (at equal consistence) . 10
Table 5 – Specific requirements for air entraining admixtures (at equal consistence) . 10
Table 6 – Specific requirements for set accelerating admixtures (at equal consistence) . 10
Table 7 – Specific requirements for hardening accelerating admixtures (at equal consistence) . 11
Table 8 – Specific requirements for set retarding admixtures (at equal consistence) . 11
Table 9 – Specific requirements for water resisting admixtures (at equal consistence or equal w/c ratio . 11
Table 10 – Specific requirements for set retarding/water reducing/plasticizing admixtures (at equal consistence) 12
Table 11.1 – Specific requirements for set retarding/high range water reducing/ super-plasticizing
admixtures (at equal consistence) . 12
Table 11.2 – Specific requirements for set retarding/high range water reducing/ super-plasticizing
admixtures (at equal w/c ratio) . 12
Table 12 – Specific requirements for set accelerating/water reducing/plasticizing admixtures
(at equal consistence) . 13
Table 13 – Minimum frequency of test for the factory production control of concrete admixtures according
to EN 934-2 . 14
Table ZA.1 – Scope and relevant clauses of this standard . 18
Table ZA.2 – System of attestation of conformity . 20
Table ZA.3 – Assignation of evaluation of conformity tasks . 20
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 104 "Concrete", 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 January 2002, and conflicting national standards shall be withdrawn at the latest by April
2003.
This European Standard supersedes EN 934-2:1997.
This European Standard 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 standard.
This standard is a part of the series EN 934 "Admixtures for concrete, mortar and grout" which additionally comprises
the following parts
- 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, Czech Republic, Denmark, Finland, France,
Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland 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
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated
references, subsequent amendments to or revisions of any of these publications apply to this European Standard only
when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred
to applies (including amendments).
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 480-6, 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 the water soluble
chloride content.
EN 480-11, Admixtures for concrete, mortar and grout - Test methods - Part 11: Determination of air void charac-
teristics in hardened concrete.
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.
prEN 1015-13:1993, Methods of test for mortar for masonry - Part 13: Determination of the dimensional stability of
hardened mortars.
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 method.
prEN 12390-3:1999, Testing hardend concrete - Part 3: Compressive strength of test specimens.
ISO 758, Liquid chemical products for industrial use - Determination of density at 20 °C.
ISO 1158, Plastics - Vinyl chloride homopolymers and copolymers - Determination of chlorine.
Surface active agents - Determination of pH of aqueous solutions - Potentiometric method
ISO 4316, .
3 Terms and definitions
For the purposes of this 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
the 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
a single function of a multifunction admixture designated by the manufacturer
3.1.8
secondary function
a 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 quantitiy 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)
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 the admixtures defined in this standard shall conform to the general requirements in Table 1.
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 3.2.1 to 3.2.12 shall conform to the corresponding performance requirements as follows:
Water reducing/plasticizing admixtures Table 2
High range water reducing/superplasticizing
admixtures Tables 3.1 and 3.2
Water retaining admixtures Table 4
Air entraining admixtures Table 5
Set accelerating admixtures Table 6
Hardening accelerating admixtures Table 7
Set retarding admixtures Table 8
Water resisting admixtures Table 9
Set retarding/water reducing/plasticizing
admixtures Table 10
Set retarding/high range water reducing/ Table 11.1 and Table 11.2
superplasticizing admixtures
Set accelerating/water reducing/plasticizing Table 12
admixtures
Where manufacturer's stated values are required, this shall be provided in writing on request.
NOTE Admixtures should not lead to a significant change in the shrinkage or expansion of hardened concrete. To measure this the
procedure for determining dimensional stability in prEN 1015-13:1993 can be used with reference mortar according to EN 480-1.
Table 1 – General Requirements
No Property Test method Requirements
a
1 Homogeneity Visual Homogeneous when used. Segregation
shall not exceed the limit stated by the ma-
nufacturer
a
2 Colour Visual Uniform and similar to the description provi-
ded by the manufacturer
b
3 Effective com- EN 480-6 IR spectra to show no significant change
a
ponent with respect to the effective component
when compared to reference spectrum pro-
vided by the manufacturer
a
4 Relative density ISO 758 D ± 0,03 if D > 1,10
D ± 0,02 if D £ 1,10
(for liquids only)
where D is manufacturer's stated value
c
5 Conventional dry EN 480-8 0,95 T £ X < 1,05 T
a
for T ‡ 20 %
material content
0,90 T £ X < 1,10 T
for T< 20 %
T is manufacturer's stated value % by
mass; X is test result % by mass
a
6 pH value ISO 4316 Manufacturer's stated value ±1 or within
manufacturer's stated range
7 Effect on setting EN 480-2 using maximum Report results
at recommended dosage in
maximum recom-
reference mortar with 4 dif-
mended dosage
ferent cements as EN 480-1
a d e
8 Total chlorine ISO 1158 Either £ 0,10 % by mass or not
above the manufacturer's stated
value
h
9 Water soluble EN 480-10 Either £ 0,10 % by mass or not above the
chloride manufacturer's stated value
- a
(Cl )
10 Alkali content EN 480-12 Not above the manufacturer's stated maxi-
(Na O mum
a
equivalent)
f g
11 Corrosion beha- No corrosion promoting effects on steel em-
g
viour bedded in concrete
a
Manufacturer's stated value shall be provided in writing, to the user.
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 and water soluble chloride content, only
the water soluble chloride content should be determined in subsequent tests on the admixture
involved.
e
The procedure in ISO 1158 shall be modified as follows:
- Increase of 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.
g
Until there is an accepted European Standard the national regulations in the place of use shall
apply when required.
h
Where the chloride content is £ 0,10 % by mass the admixture may be described as "chloride
free".
Table 2 – Specific requirements for water reducing/plasticizing admixtures
(at equal consistence)
No Property Reference concrete Test method Requirements
1 Water EN 480-1 reference slump EN 12350-2 In test mix ‡ 5 % compared
reduction concrete I or with control mix
flow EN 12350-5
2 Compres- EN 480-1 reference prEN 12390-3:1999 At 7 and 28 days:
Test mix ‡ 110 % of control
sive concrete I
mix
strength
3 Air content EN 480-1 reference EN 12350-7 Test mix £ 2 % by volume
above control mix unless sta-
in fresh concrete I
ted otherwise by the manufac-
concrete
turer
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 EN 480-1 reference slump EN 12350-2 In test mix ‡ 12 %
or
reduction concrete I compared with control
flow EN 12350-5
mix
2 Compres- EN 480-1 reference prEN 12390-3:1999 At 1 day: Test mix ‡ 140
sive concrete I % of control mix
‡strength At 28 days: Test mix
115 % of control mix
3 Air con- EN 480-1 reference EN 12350-7 Test mix £ 2 %
by volume above control
tent in concrete I
fresh con- mix unless otherwise sta-
crete ted by the manufacturer
Table 3.2 – Specific requirements for high range water reducing/super plasticizing
admixtures (at equal w/c ratio)
No Property Reference concrete Test method Requirements
1 Increase EN 480-1 reference slump EN 12350-2 Increase in slump
or‡ 120 mm from initial
in consi- concrete IV
flow EN 12350-5 (30 ± 10) mm
stence
Increase in flow
‡ 160 mm from initial
(350 ± 20) mm
2 Retention EN 480-1 reference slump EN 12350-2 30 min after the addition the
or
of consi- concrete IV consistence of the test mix
flow EN 12350-5
stence shall not fall below the value of
the initial consistence of the
control mix
3 Compres- EN 480-1 reference prEN 12390- At 28 days : test mix
‡ 90 % of control mix
sive concrete IV 3:1999
strength
4 Air content EN 480-1 reference EN 12350-7 Test mix £ 2 % by volume abo-
in fresh concrete IV ve control mix unless otherwise
concrete stated by the manufacturer
Table 4 – Specific requirements for water retaining admixtures
(at equal consistence)
No Property Reference concrete Test method Requirements
1 Bleeding EN 480-1 reference EN 480-4 Test mix £ 50 % of control mix
concrete II
2 Compres- EN 480-1 reference prEN 12390-3:1999 At 28 days : test mix
‡ 80 % of control mix
sive concrete II
strength
3 Air content EN 480-1 reference EN 12350-7 Test mix £ 2 % by volume
above control mix unless sta-
in fresh concrete II
ted otherwise by the manufac-
concrete
turer
Table 5 – Specific requirements for air entraining admixtures
(at equal consistence)
a
No Property Reference concrete Test method Requirements
1 Air content EN 480-1 reference EN 12350-7 Test mix ‡ 2,5 % by volume
in fresh concrete III above control mix
Total air content
concrete
b
4 % to 6 % by volume
(entrained
air)
c
2 Air void EN 480-1 reference EN 480-11 Spacing factor in test mix
£ 0,200 mm
characteri- concrete III
stics in
hardened
concrete
3 Compres- EN 480-1 reference prEN 12390- At 28 days : test mix
‡ 75 % of control mix
sive concrete III 3:1999
strength
a
All the requirements apply to the same test mix.
b
The compliance dosage cannot be stated, the dosage has to be adju
...
SLOVENSKI SIST EN 934-2
STANDARD
junij 2002
Kemijski dodatki za beton, malto in injekcijsko maso – 2. del: Kemijski
dodatki za beton - Definicije, zahteve, skladnost in označevanje
(istoveten EN 934-2:2001)
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 pour béton -
Définitions, exigences, conformité, marquage et étiquetage
Zusatzmittel für Beton, Mörtel und Einpressmörtel -Teil 2: Betonzusatzmittel -
Definitionen, Anforderungen, Konformität, Kennzeichnung und Beschriftung
Deskriptorji:
Referenčna številka
ICS 01.040.91; 91.100.30 SIST EN 934-2:2002 (sl)
Nadaljevanje na strani II in od 1 do 21
© 2003-02. Slovenski prevod standarda je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov ni dovoljeno.
SIST EN 934-2 : 2002
NACIONALNI UVOD
Standard SIST EN 934-2 (sl), Kemijski dodatki za beton, malto in injekcijsko maso – 2. del: Kemijski
dodatki za beton - Definicije, zahteve, skladnost, in označevanje, 2002, ima status slovenskega
standarda in je istoveten evropskemu standardu EN 934-2 Admixtures for concrete, mortar and grout -
Part 2: Concrete admixtures - Definitions, requirements, conformity, marking and labelling, julij 2001.
NACIONALNI PREDGOVOR
Evropski standard EN 934-2:2001 je pripravil tehnični odbor Evropskega komiteja za standardizacijo
CEN/TC 104, Beton.
Pripravo tega standarda sta CEN poverila Evropska komisija in Evropsko združenje za prosto
trgovino. Ta evropski standard ustreza bistvenim zahtevam evropskih direktiv.
Slovenski tehnični odbor SIST/TC BBB /SC 8 Voda in dodatki je dne 2002-06-14 privzel evropski
standard EN 934:2001 po metodi ponatisa. Standard v slovenskem jeziku je le jezikovna različica.
ZVEZE S STANDARDI
S prevzemom tega evropskega standarda veljajo za omejeni namen referenčnih standardov vsi
standardi, navedeni v izvirniku.
PREDHODNA IZDAJA
SIST EN 934-2:1998 (en) Kemijski dodatki za beton, malto in injekcijsko maso – 2. del: Kemijski
dodatki za beton – Definicije in zahteve
OPOMBI
– Povsod, kjer se v besedilu standarda uporablja izraz “evropski standard”, v
– Nacionalni uvod in nacionalni predgovor nista sestavni del standarda.
– Ta nacionalni dokument je istoveten EN 934-2:2001 in je objavljen z dovoljenjem
CEN
Rue de Stassart, 36
1050 Bruselj
Belgija
This national document is identical with EN 934-2:2001 and is published with the permission of
CEN
Rue de Stassart, 36
1050 Bruxelles
Belgium
II
EVROPSKI STANDARD EN 934-2
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM julij 2001
ICS: 01.0404.91, 91.100.30 Nadomešča EN 934-2:1997
Slovenska izdaja
Kemijski dodatki za beton, malto in injekcijsko maso – 2. del: Kemijski dodatki
za beton - Definicije, zahteve, skladnost in označevanje
Admixtures for concrete, mortar Zusatzmittel für Beton, Mörtel und Adjuvants pour béton, mortier et
and grout - Part 2: Concrete Einpressmörtel -Teil 2: coulis - Partie 2: Adjuvants pour
admixtures - Definitions, Betonzusatzmittel -Definitionen, béton - Définitions, exigences,
requirements, conformity, Anforderungen, Konformität, conformité, marquage et
marking and labelling Kennzeichnung und Beschriftung étiquetage
Ta evropski standard je 2. maja 2001 odobril CEN.
Člani CEN morajo ravnati v skladu s poslovnikom CEN/CENELEC, ki določa pogoje, pod katerimi dobi
ta standard status nacionalnega standarda brez kakršnih koli sprememb. Sezname najnovejših izdaj
teh nacionalnih standardov in njihove bibliografske podatke je možno dobiti na zahtevo pri Centralnem
sekretariatu ali članih CEN.
Ta evropski standard obstaja v treh uradnih izdajah (angleški, francoski, nemški). Izdaje v drugih
jezikih, ki jih članice CEN na lastno odgovornost prevedejo in izdajo ter prijavijo pri Centralnem
sekretariatu CEN, veljajo kot uradne izdaje.
Člani CEN so nacionalne organi za standarde Avstrije, Belgije, Češke republike, Danske, Finske,
Francije, Grčije, Irske, Islandije, Italije, Luksemburga, Nemčije, Nizozemske, Norveške, Portugalske,
Španije, Švedske, Švice in Združenega kraljestva.
CEN
Evropski komite za standardizacijo
European Committee for Standardization
Europäisches Komitee für Normung
Comité Européen de Normalisation
Centralni sekretariat: Rue de Stassart 36, B-1050 Bruselj
© 2001 CEN Lastnice avtorskih pravic so vse države članice CEN Ref. št. EN 934-2:2001 E
SIST EN 934-2 : 2002
VSEBINA Stran
Predgovor .3
1 Obseg in področje uporabe.3
2 Zveze s standardi .3
3 Izrazi in definicije .4
4 Zahteve.5
4.1 Splošne zahteve.5
4.2 Zahteve za posebne vrste kemijskih dodatkov .6
4.3 Sproščanje nevarnih snovi .12
5 Vzorčenje.12
6 Kontrola skladnosti .12
7 Ovrednotenje skladnosti.12
8 Označevanje.14
8.1 Splošno.14
8.2 Oznake kemijskih dodatkov.14
8.3 Dodatni podatki.14
Dodatek A (informativni) Vsebnost in sproščanje nevarnih snovi.15
Dodatek ZA (informativni) Pogoji za označevanje kemijskih dodatkov za beton, ki sodijo pod
Direktivo ES o gradbenih proizvodih, z znakom CE .16
ZA.1 Določila tega evropskega standarda, ki se nanašajo na pogoje Direktive ESo gradbenih proizvodih.16
ZA.2 Postopki potrjevanja skladnosti kemijskih dodatkov za beton.18
ZA.3 Označevanje z znakom CE .20
Tabela 1: Splošne zahteve.7
Tabela 2: Posebne zahteve za plastifikatorje (pri enaki konsistenci) .8
Tabela 3.1: Posebne zahteve za superplastifikatorje (pri enaki konsistenci) .8
Tabela 3.2: Posebne zahteve za superplastifikatorje (pri enakem v/c razmerju) .8
Tabela 4:Posebne zahteve za kemijske dodatke za zadrževanje vode (pri enaki konsistenci) .9
Tabela 5: Posebne zahteve za aerante (pri enaki konsistenci) .9
Tabela 6: Posebne zahteve za pospešila vezanja (pri enaki konsistenci).9
Tabela 7: Posebne zahteve za pospešila strjevanja (pri enaki konsistenci).9
Tabela 8: Posebne zahteve za zavlačila vezanja (pri enaki konsistenci) .10
Tabela 9: Posebne zahteve za gostila (pri enaki konsistenci ali enakem v/c razmerju).10
Tabela 10: Posebne zahteve za zavlačila vezanja/plastifikatorje (pri enaki konsistenci).10
Tabela 11.1: Posebne zahteve za zavlačila vezanja/superplastifikatorje (pri enaki konsistenci) .11
Tabela 11.2: Posebne zahteve za zavlačila vezanja/superplastifikatorje (pri enakem v/c razmerju).11
Tabela 12: Posebne zahteve za pospešila vezanja/plastifikatorje (pri enaki konsistenci) .11
Tabela 13: Najmanjša pogostnost preskusov za notranjo kontrolo proizvodnje kemijskih dodatkov
za beton po EN 934-2 .13
Tabela ZA.1: Obseg in področje uporabe ter ustrezne točke tega standarda .17
Tabela ZA.2: Sistem potrjevanja skladnosti .18
Tabela ZA.3: Naloge proizvajalca in priglašenega organa pri vrednotenju skladnosti .19
SIST EN 934-2 : 2002
Predgovor
Ta evropski standard je pripravil tehnični odbor CEN/TC 104 Beton, katerega sekretariat sodi pod DIN.
Ta evropski standard dobi status nacionalnega standarda z objavo istovetnega besedila ali z
razglasitvijo, najpozneje do januarja 2002. Nacionalne standarde, ki so v nasprotju s tem standardom,
je treba umakniti najpozneje do aprila 2003.
Ta evropski standard nadomešča EN 934-2:1997.
Ta evropski standard je bil pripravljen na podlagi mandata, ki sta ga CEN dala Evropska komisija ter
Evropsko združenje za prosto trgovino, in upošteva bistvene zahteve direktiv(e) ES.
Za zvezo z direktivo(ami) ES glej informativni dodatek ZA, ki je sestavni del tega standarda.
Ta standard je eden od delov serije EN 934 Kemijski dodatki za beton, malto in injekcijsko maso, ki
ima še naslednje dele:
– 3. del: Kemijski dodatki za malto za zidanje - Definicije, zahteve, skladnost in označevanje
– 4. del: Kemijski dodatki za injekcijsko maso za prednapete kable - Definicije, zahteve, skladnost
in označevanje
– 5. del: Kemijski dodatki za brizgani beton - Definicije, zahteve, skladnost in označevanje
– 6. del: Vzorčenje, kontrola skladnosti in ovrednotenje skladnosti
Ta evropski standard se uporablja skupaj s standardi serije EN 480, ki obravnavajo metode
preskušanja kemijskih dodatkov.
Dodatka A in ZA sta informativna.
V skladu s poslovnikom CEN/CENELEC je objava tega evropskega standarda obvezna za nacionalne
organizacije za standarde naslednjih držav: Avstrije, Belgije, Češke republike, Danske, Finske,
Francije, Grčije, Islandije, Irske, Italije, Luksemburga, Nemčije, Nizozemske, Norveške, Portugalske,
Španije, Švedske, Švice in Združenega kraljestva.
1 Obseg in področje uporabe
Ta evropski standard določa definicije in zahteve za kemijske dodatke, ki se uporabljajo v betonu.
Nanaša se na kemijske dodatke za nearmirani, armirani in prednapeti beton, ki se uporabljajo pri
mešanju na gradbišču, za transportni beton in za beton za betonske izdelke.
Zahteve tega standarda za obnašanje v uporabi se nanašajo na kemijske dodatke, ki se uporabljajo
za beton običajne konsistence. Te zahteve ne veljajo za kemijske dodatke, ki se uporabljajo za druge
vrste betonov kot npr. polsuhe in zemeljskovlažne mešanice.
Določila, ki vplivajo na praktično uporabo kemijskih dodatkov v proizvodnji betona, npr. zahteve za
sestavo, mešanje, vgrajevanje, nego itd. betona, ki vsebuje kemijske dodatke, niso predmet tega
standarda.
2 Zveze s standardi
Ta evropski standard z datiranimi ali nedatiranimi sklicevanji vključuje določila iz drugih publikacij.
Zveze s standardi so navedene na ustreznih mestih v besedilu, v nadaljevanju pa so navedene
publikacije. V tem evropskem standardu se pri datiranih sklicevanjih poznejša dopolnila ali
spremembe katerekoli publikacije upoštevajo le, če so vanje vključene z dopolnilom ali revizijo. Če
navedeni standardi niso datirani, velja njihova zadnja izdaja.
EN 480-1 Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja
- 1. del: Referenčni beton in referenčna malta za preskušanje
SIST EN 934-2 : 2002
EN 480-2 Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja
- 2. del: Določevanje časa vezanja
EN 480-4 Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja
- 4. del: Določevanje izločanja vode iz betona
EN 480-5 Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja
- 5. del: Določevanje kapilarnega vpijanja
EN 480-6 Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja
- 6. del: Infrardeča analiza
EN 480-8 Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja
- 8. del: Določevanje deleža suhe snovi
EN 480-10 Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja
- 10. del: Določevanje vsebnosti vodotopnega klorida
EN 480-11 Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja
- 11. del: Določevanje značilnosti zračnih por v strjenem betonu
EN 480-12 Kemijski dodatki za beton, malto in injekcijsko maso - Metode preskušanja
- 12. del: Določevanje vsebnosti alkalij v kemijskem dodatku
EN 934-6:2001 Kemijski dodatki za beton, malto in injekcijsko maso - 6. del: Vzorčenje,
kontrola
skladnosti in ovrednotenje skladnosti
prEN 1015-13:1993 Metode preskušanja malt za zidanje - 13. del: Določevanje dimenzijske
stabilnosti strjenih malt
EN 12350-2 Preskušanje svežega betona - 2. del: Posed stožca
EN 12350-5 Preskušanje svežega betona - 5. del: Razlez
EN 12350-7 Preskušanje svežega betona - 7. del: Vsebnost zraka - Porozimetrske metode
prEN 12390-3:1999 Preskušanje strjenega betona - 3. del: Tlačna trdnost preskušancev
ISO 758 Tekoči kemični proizvodi za industrijsko rabo - Določevanje gostote pri 20 oC
ISO 1158 Plastične mase - Homopolimeri in kopolimeri vinilklorida - Določevanje klora
ISO 4316 Površinsko aktivna sredstva - Določevanje pH vodnih raztopin -
Potenciometrična metoda
3 Izrazi in definicije
V tem standardu se uporabljajo naslednji izrazi in definicije:
3.1 Splošne definicije
3.1.1 Učinkovitost: Sposobnost kemijskega dodatka, da je pri predvideni uporabi učinkovit in nima
škodljivih vplivov.
3.1.2 Običajen odmerek: Odmerek kemijskega dodatka, izražen v % mase cementa, s katerim bodo
izpolnjene zahteve tega standarda in je v priporočenem območju odmerkov; poda ga proizvajalec.
3.1.3 Priporočeno območje odmerkov: Odmerki znotraj meja, ki jih za proizvod na podlagi izkušenj
na gradbišču priporoča proizvajalec, izraženi v % mase cementa.
SIST EN 934-2 : 2002
OPOMBA: Uporaba priporočenega odmerka ne pomeni, da bodo zahteve tega standarda izpolnjene v celotnem območju.
Za določitev odmerka, primernega za doseganje zahtevanih rezultatov, so potrebni predhodni preskusi z
materiali, ki se bodo uporabljali na gradbišču (glej EN 446).
3.1.4 Največji priporočeni odmerek: Zgornja meja priporočenega območja odmerkov.
3.1.5 Referenčni beton in malta: Beton ali malta predpisana v EN 480-1 za preskušanje kemijskih
dodatkov za ugotavljanje skladnosti s tem standardom.
3.1.6 Večnamenski dodatek: Kemijski dodatek, ki ima več kot eno od osnovnih funkcij, definiranih v
3.2.2 do 3.2.9, in vpliva na različne lastnosti svežega in/ali strjenega betona.
3.1.7 Osnovni učinek: En sam učinek večnamenskega dodatka, ki ga navede proizvajalec.
3.1.8 Dodaten učinek: Učinek, ki ga ima večnamenski dodatek poleg osnovnega učinka.
3.2 Posebne definicije
3.2.1 Kemijski dodatek za beton: Material, ki se dodaja med mešanjem betona, v količini, ki ni večja
od 5 % mase cementa v betonu, zato da se spremenijo lastnosti sveže in/ali strjene mešanice.
3.2.2 Plastifikator: Kemijski dodatek, ki omogoča znižanje količine vode v mešanici betona brez vpliva
na konsistenco ali zveča posed/razlez brez vpliva na delež vode ali istočasno učinkuje na oba načina.
3.2.3 Superplastifikator: Kemijski dodatek, ki omogoča visoko znižanje deleža vode v mešanici
betona brez vpliva na konsistenco, znatno zveča posed/razlez brez vpliva na delež vode ali istočasno
učinkuje na oboje.
3.2.4 Kemijski dodatek za zadrževanje vode: Kemijski dodatek, ki z zmanjšanjem izločanja vode
zmanjša izgubo vode.
3.2.5 Aerant: Kemijski dodatek, s katerim se med mešanjem vnese kontrolirana količina majhnih,
enakomerno porazdeljenih zračnih mehurčkov, ki po strditvi ostanejo v betonu.
3.2.6 Pospešilo vezanja: Kemijski dodatek, ki skrajšuje čas do začetka prehoda mešanice iz
plastičnega v trdo stanje.
3.2.7 Pospešilo strjevanja: Kemijski dodatek, ki povečuje hitrost razvoja začetnih trdnosti betona
brez ali z vplivom na čas vezanja.
3.2.8 Zavlačilo vezanja: Kemijski dodatek, ki podaljšuje čas do začetka prehoda mešanice iz
plastičnega v trdo stanje.
3.2.9 Gostilo: Kemijski dodatek, ki zmanjšuje kapilarno vpijanje strjenega betona.
3.2.10 Zavlačilo vezanja/plastifikator: Kemijski dodatek, ki obenem učinkuje kot plastifikator
(osnovni učinek) in zavlačilo vezanja (dodaten učinek).
3.2.11 Zavlačilo vezanja/superplastifikator: Kemijski dodatek, ki obenem učinkuje kot
superplastifikator (osnovni učinek) in zavlačilo vezanja (dodaten učinek).
3.2.12 Pospešilo vezanja/plastifikator: Kemijski dodatek, ki obenem učinkuje kot plastifikator
(osnovni učinek) in pospešilo vezanja (dodaten učinek).
4 Zahteve
4.1 Splošne zahteve
Pri zahtevah v tem standardu se predpostavlja, da so kemijski dodatki v betonu porazdeljeni enakomerno;
posebno je treba paziti na porazdelitev praškastih kemijskih dodatkov z zavlačujočim učinkom.
SIST EN 934-2 : 2002
Vsi kemijski dodatki, definirani v tem standardu, morajo ustrezati splošnim zahtevam v tabeli 1.
OPOMBA: Za zahteve, ki vodijo do označevanja z znakom CE, glej tabelo ZA.1 dodatka ZA.
4.2 Zahteve za posamezne vrste kemijskih dodatkov
Kemijski dodatki, definirani v 3.2.1 do 3.2.12, morajo biti skladni z ustreznimi zahtevami za
učinkovitost, kot sledi:
Plastifikatorji tabela 2
Superplastifikatorji tabeli 3.1 in 3.2
Kemijski dodatki za zadrževanje vode tabela 4
Aeranti tabela 5
Pospešila vezanja tabela 6
Pospešila strjevanja tabela 7
Zavlačila vezanja tabela 8
Gostila tabela 9
Zavlačila vezanja/plastifikatorji tabela 10
Zavlačila vezanja/superplastifikatorji tabela 11.1 in tabela 11.2
Pospešila vezanja/plastifikatorji tabela 12
Če se zahteva, da mora proizvajalec navesti vrednosti, jih mora na zahtevo podati pisno.
OPOMBA: Kemijski dodatki ne smejo pomembno spremeniti krčenja ali širjenja strjenega betona. Za ta merjenja se lahko
uporabi postopek za določevanje dimenzijske stabilnosti po prEN 1015-13:1993 z referenčno malto po EN 480-1.
SIST EN 934-2 : 2002
Tabela 1: Splošne zahteve
Št Lastnost Metoda preskušanja Zahteve
a
1 Vizualna Pri uporabi homogen. Segregacija ne sme
Homogenost
biti večja od tiste, ki jo navaja proizvajalec.
a
2 Vizualna Enakomerna in podobna taki, kot jo navaja
Barva
proizvajalec.
a b
3 IR spekter ne sme pokazati pomembne
Učinkovina EN 480-6
spremembe učinkovine v primerjavi z
referenčnim spektrom, ki ga preskrbi
proizvajalec.
a
4 ISO 758 D ± 0,03 pri D > 1,10
Relativna gostota
D ± 0,02 pri D ≥ 1,10,
(samo za tekočine)
kjer je D vrednost, ki jo navede proizvajalec
a c
5 Vsebnost suhe snovi EN 480-8 0,95 T ≤ X < 1,05 T za T ≥ 20 %
0,90 T ≤ X < 1,10 T za T < 20 %
T je vrednost, ki jo navede proizvajalec v
% mase; X je rezultat preskusa v % mase
a
6 ISO 4316 ± 1 od vrednosti, ki jo navede proizvajalec ali
pH vrednost
v mejah, ki jih navede proizvajalec
7 Vpliv na čas vezanja z EN 480-2 z največjim Navedba rezultatov preskusa
največjim priporočenim priporočenim odmerkom v
odmerkom referenčni malti s 4 različnimi
cementi po EN 480-1
a d e
8 Skupni klor ISO 1158 ≤ 0,10 % mase oziroma ne nad vrednostjo, ki
jo navede proizvajalec
- a h
9 EN 480-10 ≤ 0,10 % mase oziroma ne nad vrednostjo,
Vodotopni klorid (Cl )
ki jo navede proizvajalec
10 Vsebnost alkalij EN 480-12 Ne nad najvišjo vrednostjo, ki jo navede
a
proizvajalec
(ekvivalent Na O)
f g
11 Korozijsko obnašanje Nobenih korozijskih vplivov na jeklo, vgrajeno
g
v betonu
a
Proizvajalec mora deklarirano vrednost na zahtevo uporabnika predložiti pisno.
b
Če metoda po EN 480-6 ni primerna, mora proizvajalec priporočiti nadomestno preskusno metodo.
c
Če metoda po EN 480-8 ni primerna, mora proizvajalec priporočiti nadomestno preskusno metodo.
d
Če razlika med vsebnostjo skupnega klora in vsebnostjo vodotopnega klorida ni velika, se lahko pri naslednjih preskusih
istega kemijskega dodatka določa samo vsebnost vodotopnega klorida.
e
Postopek po ISO 1158 je treba prilagoditi na naslednji način:
- vzorec suhega kemijskega dodatka se poveča na 0,1 g;
- uporablja se 0,01 N raztopini srebrovega nitrata in amonijevega tiocianata
f
Za preskušanje mora biti uporabljen cement CEM I, z deležem C A pod 5 % mase.
g
Dokler ni sprejet evropski standard, se namesto tega uporabljajo nacionalni predpisi.
h
Kadar je vsebnost klorida ≤ 0,10 % na maso, se lahko kemijski dodatek opiše kot "brez klorida".
SIST EN 934-2 : 2002
Tabela 2: Posebne zahteve za plastifikatorje (pri enaki konsistenci)
Št. Lastnost Referenčni beton Metoda preskušanja Zahteve
1 Zmanjšanje vode referenčni beton I posed po EN 12350 - 2 V preskusni mešanici ≥ 5 % od
po EN 480-1 ali vode v primerjalni mešanici
razlez po EN 12350-5
2 Tlačna trdnost referenčni beton I prEN 12390-3:1999 Po 7 in 28 dneh:
po EN 480-1 preskusna mešanica ≥ 110 %
trdnosti primerjalne mešanice
3 Vsebnost zraka v referenčni beton I EN 12350-7 Preskusna mešanica ≥ 2 vol. %
svežem betonu po EN 480-1 več kot primerjalna mešanica,
razen če proizvajalec ne navaja
drugače
Tabela 3.1: Posebne zahteve za superplastifikatorje (pri enaki konsistenci)
Št. Lastnost Referenčni beton Metoda preskušanja Zahteve
1 Zmanjšanje vode referenčni beton I po posed EN 12350-2 V preskusni mešanici ≥ 12 % od
EN 480-1 ali vode v primerjalni mešanici
razlez po EN 12350-5
2 Tlačna trdnost referenčni beton I po prEN 12390-3:1999 Po 1 dnevu:
EN 480-1 preskusna mešanica ≥ 140 %
trdnosti primerjalne mešanice
Po 28 dneh:
preskusna mešanica ≥ 115 %
trdnosti primerjalne mešanice
3 Vsebnost zraka v referenčni beton I po EN 12350-7 Preskusna mešanica ≤ 2 vol. %
svežem betonu EN 480-1 več kot primerjalna mešanica,
razen če proizvajalec ne navaja
drugače
Tabela 3.2: Posebne zahteve za superplastifikatorje (pri enakem v/c razmerju)
Št. Lastnost Referenčni beton Metoda preskušanja Zahteve
1 Povečanje referenčni beton IV posed po EN 12350-2 Povečanje poseda za ≤ 120 mm
konsistence po EN 480-1 ali od začetne vrednosti (30 ± 10) mm
razlez po EN 12350-5
Povečanje razleza za ≥ 160 mm
od začetne vrednosti (350 ± 20)
mm
2 Stalnost referenčni beton IV posed po EN 12350-2 30 minut po dodajanju
konsistence po EN 480-1 ali konsistenca preskusne mešanice
razlez po EN 12350-5 ne sme biti nižja od začetne
vrednosti konsistence primerjalne
mešanice
3 Tlačna trdnost referenčni beton IV prEN 12390-3:1999 Po 28 dneh: preskusna mešanica
po EN 480-1 ≤ 90 % trdnosti primerjalne
mešanice
4 Vsebnost zraka v referenčni beton IV EN 12350-7 Preskusna mešanica ≤ 2 vol. %
svežem betonu po EN 480-1 več kot primerjalna mešanica,
razen če proizvajalec ne navaja
drugače
SIST EN 934-2 : 2002
Tabela 4: Posebne zahteve za kemijske dodatke za zadrževanje vode (pri enaki konsistenci)
Št
...
Frequently Asked Questions
EN 934-2:2001 is a standard published by the European Committee for Standardization (CEN). Its full title is "Admixtures for concrete, mortar and grout - Part 2: Concrete admixtures - Definitions, requirements, conformity, marking and labelling". This standard covers: 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.
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.
EN 934-2:2001 is classified under the following ICS (International Classification for Standards) categories: 01.040.91 - Construction materials and building (Vocabularies); 91.100.30 - Concrete and concrete products. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 934-2:2001 has the following relationships with other standards: It is inter standard links to EN 934-2:1997, EN 934-2:2009, EN 934-2:2001/A2:2005, EN 934-2:2001/A1:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 934-2:2001 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC; Standardization Mandates: M/128. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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The EN 934-2:2001 standard is a comprehensive guideline that rigorously defines the requirements for admixtures utilized in concrete, mortar, and grout. This document focuses specifically on concrete admixtures, providing essential definitions, requirements, and conformity standards that are crucial for both the manufacturing and application of these materials in construction. One of the strengths of this standard is its detailed coverage of various types of concrete, including plain, reinforced, and prestressed concrete. This inclusivity ensures that the standard meets the needs of a wide array of applications, from site-mixed concrete to ready-mixed and precast concrete solutions. By addressing such a broad scope, the standard enhances the relevance of admixtures across different construction practices and methodologies. The performance criteria set forth in EN 934-2:2001 ensure that the admixtures used in concrete of normal consistence maintain high-quality standards and functionality. Notably, the specificity of these requirements is designed for typical concrete applications, which emphasizes the necessity for adherence to industry norms for optimal results. However, it is important to note that the standard does not include provisions governing the practical application of admixtures in the production process. This omission means that while the standard ensures the quality and performance of admixtures, it does not extend to the best practices in the composition, mixing, placing, or curing of concrete containing these additives. This aspect should be considered when implementing the standard in practical scenarios, as careful attention must be given to the overall concrete production process. In summary, the EN 934-2:2001 standard is an essential document that provides a robust framework for the use of concrete admixtures, with a clear set of definitions and performance requirements tailored to various concrete types. Its well-defined scope and emphasis on conformity make it a pivotal resource for professionals in the construction industry, ensuring the effectiveness and reliability of concrete admixtures in practical applications.
EN 934-2:2001は、コンクリート、モルタル、グラウトのための混和剤に関する重要な標準であり、その定義、要件、適合性、マークおよびラベルについて詳細に規定しています。この標準は、プレーンコンクリート、補強コンクリート、プレストレストコンクリート用の混和剤を含んでおり、現場打ちコンクリート、工場製品、プレキャストコンクリートの分野での使用が想定されています。 この標準の強みは、コンクリート用混和剤に関する明確な定義と要件を提供している点にあります。特に、通常の流動性を持つコンクリートに使用される混和剤の性能要件が明文化されています。そのため、業界関係者はこの標準を基に、信頼性のあるコンクリート製品を製造するための基準を設けることができます。 また、EN 934-2:2001は、混和剤のマークおよびラベルに関する要件も含まれており、適切な情報が提供されることで、使用者が正しく理解し使用できるよう配慮されています。これにより、混和剤の適正な使用と安全性が確保され、コンクリートの品質向上に寄与しています。 ただし、この標準は、セミドライおよび湿気土混合物など、他のタイプのコンクリート用に意図された混和剤には適用されない可能性があるため、その点については特に注意が必要です。また、コンクリートの生産における混和剤の実務的な適用に関する要求事項（成分、混合、配置、養生など）は含まれていないため、これらの要件については別のガイドラインを参照する必要があります。 総じて、EN 934-2:2001は、コンクリート用混和剤に関する包括的な標準であり、その定義、要件、およびマークとラベルのガイドラインは、コンクリートの品質と安全性を確保するために非常に重要な役割を果たします。しっかりした基準を持つことで、業界全体が一貫して高品質なコンクリートを生産することが可能となります。
표준 EN 934-2:2001은 콘크리트, 모르타르 및 그라우트용 혼합물에 대한 제정된 유럽 표준으로, 콘크리트 혼합물의 정의와 요구사항을 명확히 규정하고 있습니다. 이 표준의 적용 범위는 일반 콘크리트, 보강 콘크리트 및 프리스트레스트 콘크리트를 위한 혼합물로 확장되며, 현장 혼합, 조달 혼합 및 프리캐스트 콘크리트에 모두 적용됩니다. 이 표준의 강점은 콘크리트 혼합물에 사용되는 혼합제의 성능 요건을 체계적으로 제시함으로써 관련 산업에서의 혼합물 사용에 대한 명확성을 높인 점입니다. 특히, 표준은 일반 콘크리트 사용에 적합한 혼합제에 대한 요구사항을 자세히 다룸으로써 제품의 질을 보장하고, 건설 현장에서의 신뢰성을 증대시킵니다. 또한, EN 934-2:2001은 혼합제의 정의와 라벨링 요구사항을 상세히 안내하여, 제조업체와 사용자 간의 이해를 증진시키는 중요한 역할을 합니다. 이는 혼합물의 표준화를 통해 업계 전반의 품질 및 안전성을 높이는 데 기여합니다. 이 표준이 제공하는 규정은 시멘트 기반의 재료에 대한 기초적인 이해를 도울 뿐만 아니라, 건설 자동화 및 품질 관리와 관련된 다양한 분야에서의 응용 가능성을 확대합니다. 그러나, 주의할 점은 이 표준이 반건조 및 흙 습기 혼합물과 같은 다른 유형의 콘크리트에 대한 요구사항은 포함하고 있지 않다는 것입니다. 결국, EN 934-2:2001은 콘크리트 분야에서의 혼합제의 표준화 및 품질 보증을 위한 중요한 기준으로 작용하며, 이를 통해 건설업계의 생산성과 효율성을 높이는 데 중요한 기여를 하고 있습니다.
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