1、BS EN 934-2:2009ICS 01.040.91; 91.100.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAdmixtures forconcrete, mortar andgroutPart 2: Concrete admixtures Definitions, requirements, conformity,marking and labellingBS EN 934-2:2009 +A1:2012Part 2: Concrete admixt
2、ures Definitions, requirements, conformity, marking and labellingBS EN 934-2:2009+A1:2012ISBN 978 0 580 72907 2Amendments/corrigenda issued since publicationDate Comments31 October 2012 Implementation of CEN amendment A1:2012This British Standard waspublished under the authorityof the Standards Poli
3、cy andStrategy Committee on 30 June 2009. The British Standards Institution 2012.Published by BSI StandardsLimited 2012National forewordThis British Standard is the UK implementation of EN 934-2:2009+A1:2012.It supersedes BS EN 934-2:2009 which is withdrawn.The start and finish of text introduced or
4、 altered by amendment is indicatedin the text by tags. Tags indicating changes to CEN text carry the number ofthe CEN amendment. For example, text altered by CEN amendment A1 isindicated by .The UK participation in its preparation was entrusted by Technical CommitteeB/517, Concrete, to Subcommittee
5、B/517/3, Admixtures.A list of organizations represented on this subcommittee can be obtainedon request to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application.Compliance with a British Standard cannot
6、confer immunity fromlegal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 934-2:2009+A1 June 2012 ICS 01.040.91; 91.100.30 Supersedes EN 934-2:2009English Version Admixtures for concrete, mortar and grout - Part 2: Concrete admixtures - Definitions, requirements, conformity, marking
7、 and labelling Adjuvants pour btons, mortier et coulis - Partie 2: Adjuvants pour bton - Dfinitions, exigences, conformit, marquage et tiquetage Zusatzmittel fr Beton, Mrtel und Einpressmrtel - Teil 2: Betonzusatzmittel - Definitionen, Anforderungen, Konformitt, Kennzeichnung und Beschriftung This E
8、uropean Standard was approved by CEN on 24 April 2009 and includes Amendment 1 approved by CEN on 10 May 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alte
9、ration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language mad
10、e by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Eston
11、ia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATI
12、ON EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 934-2:2009+A1:2012: EEN 934-2:2009+A1:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normati
13、ve references 43 Terms and definitions .53.1 General definitions 53.2 Specific definitions 54 Requirements .74.1 General requirements 74.2 Requirements for specific types of admixtures .74.3 Release of dangerous substances 135 Sampling 136 Conformity control 137 Evaluation of conformity 138 Marking
14、and labelling . 148.1 General . 148.2 Designation of admixtures . 148.3 Additional Information . 14Annex A (informative) Release of dangerous substances . 15Annex B (normative) !Factory production control“ 16Annex ZA (informative) Provisions for the CE marking of admixtures for concrete under the EU
15、 Construction Products Directive . 18ZA.1 Clauses of this European Standard addressing the provisions of the EU Construction Products Directive 18ZA.2 Procedure for attestation of conformity of admixtures for concrete 21ZA.2.1 System of attestation of conformity . 21ZA.2.2 EC certificate and declara
16、tion of conformity . 22ZA.3 CE marking and labelling . 23BS EN 934-2:2009+A1:2012EN 934-2:2009+A1:2012 (E)EN 934-2:2009+A1:2012 (E) 3 Foreword This document (EN 934-2:2009+A1:2012) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products”, the secretariat of which is held b
17、y DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2012, and conflicting national standards shall be withdrawn at the latest by December 2012. Attention is drawn to the possibility th
18、at some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes !EN 934-2:2009“. This document includes Amendment 1 approved by CEN on 2012-05-10. The start and fini
19、sh of text introduced or altered by amendment is indicated in the text by tags ! “. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of !EU Directive(s)“. For relationship with !EU Dir
20、ective(s)“, see informative Annex ZA, which is an integral part of this document. This standard is a part of the series EN 934 “Admixtures for concrete, mortar and grout“ which additionally comprises the following parts Part 1: Common requirements Part 3: Admixtures for masonry mortar Definitions, r
21、equirements, 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
22、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 ar
23、e bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Sp
24、ain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 934-2:2009+A1:2012EN 934-2:2009+A1:2012 (E)EN 934-2:2009+A1:2012 (E) 4 1 Scope This European Standard specifies definitions and requirements for admixtures for use in concrete. It covers admixtures for plain, reinforced and prestressed c
25、oncrete 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 mi
26、xes. Provisions governing the practical application of admixtures in the production of concrete, i.e. requirements concerning composition, mixing, placing, curing etc. of concrete containing admixtures are not part of this standard. 2 Normative references The following referenced documents are indis
27、pensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 480-1, Admixtures for concrete, mortar and grout Test methods Part 1: Reference concrete a
28、nd 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 Te
29、st methods Part 5: Determination of capillary absorption EN 480-11, Admixtures for concrete, mortar and grout Test methods Part 11: Determination of air void characteristics in hardened concrete !prEN 480-15, Admixtures for concrete, mortar and grout Test methods Part 15: Reference concrete and meth
30、od for testing viscosity modifying admixtures“ EN 934-1:2008, Admixtures for concrete, mortar and grout Part 1: Common requirements EN 934-6:2001 Admixtures for concrete, mortar and grout Part 6: Sampling, conformity control and evaluation of conformity EN 12350-2, Testing fresh concrete Part 2: Slu
31、mp test EN 12350-5, Testing fresh concrete Part 5: Flow table test EN 12350-7, Testing fresh concrete Part 7: Air content Pressure methods !EN 12350-11, Testing fresh concrete Part 11: Self-compacting concrete Sieve segregation test“ EN 12390-3, Testing hardened concrete Part 3: Compressive strength
32、 of test specimens BS EN 934-2:2009+A1:2012EN 934-2:2009+A1:2012 (E)EN 934-2:2009+A1:2012 (E) 5 3 Terms and definitions For the purposes of this document, the terms and definitions in EN 934-1:2008 and the following apply. 3.1 General definitions 3.1.1 performance ability of an admixture to be effec
33、tive in its intended use without detrimental effects 3.1.2 compliance dosage dosage of an admixture, expressed in % by mass of cement, stated by the manufacturer which will meet the requirements of this standard. The compliance dosage is within the recommended range of dosage 3.1.3 recommended range
34、 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 ou
35、t 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
36、with this standard 3.1.6 multifunction admixture admixture which affects several properties of fresh and/or hardened concrete by performing more than one of the main functions defined in 3.2.2 to 3.2.9 3.1.7 primary function single function of a multifunction admixture designated by the manufacturer
37、 3.1.8 secondary function function of a multifunction admixture which is additional to the primary function 3.2 Specific definitions 3.2.1 admixtures for concrete material added during the mixing process of concrete in a quantity not more than 5 % by mass of the cement content of the concrete, to mo
38、dify 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 o
39、r produces both effects simultaneously BS EN 934-2:2009+A1:2012EN 934-2:2009+A1:2012 (E)EN 934-2:2009+A1:2012 (E) 6 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, o
40、r which, without affecting the water content increases the slump/flow considerably, or produces both effects simultaneously 3.2.4 water retaining admixture admixture which reduces the loss of water by a reduction of bleeding 3.2.5 air entraining admixture admixture which allows a controlled quantity
41、 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
42、 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
43、 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/
44、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
45、 which produces the combined effects of a water reducing/plasticizing admixture (primary function) and a set accelerating admixture (secondary function) !3.2.13 viscosity modifying admixture admixture incorporated in concrete to limit segregation by improving cohesion“ BS EN 934-2:2009+A1:2012EN 934
46、-2:2009+A1:2012 (E)EN 934-2:2009+A1:2012 (E) 7 4 Requirements 4.1 General requirements The requirements in this standard assume that admixtures are uniformly dispersed in concrete; special attention shall be given to the dispersion of powder admixtures with retarding effects. All admixtures defined
47、in !3.2.2 to 3.2.13“ shall conform the general requirements in EN 934-1:2008 Table 1, Clause 5 and Clause 6. NOTE For requirements which lead to the CE-marking, see Table ZA.1 of Annex ZA. 4.2 Requirements for specific types of admixtures The admixtures defined in !3.2.2 to 3.2.13“ shall comply with
48、 the requirements listed in Table 1:BS EN 934-2:2009+A1:2012EN 934-2:2009+A1:2012 (E)EN 934-2:2009+A1:2012 (E) 8 Table 1 Performance requirements for specific types of admixture Definition Name of admixture Performance requirements 3.2.2 Water reducing/plasticizing admixtures Table 2 3.2.3 High rang
49、e water reducing/superplasticizing admixtures Tables 3.1 and 3.2 3.2.4 Water retaining admixtures Table 4 3.2.5 Air entraining admixture Table 5 3.2.6 Set accelerating admixtures Table 6 3.2.7 Hardening accelerating admixtures Table 7 3.2.8 Set retarding admixtures Table 8 3.2.9 Water resisting admixtures Table 9 3.2.10 Set retarding/water reducing/plasticizing admixtures Table 10 3.2.11 Set retarding/high range water reducing/
