1、BRITISH STANDARDBS EN 934-5:2007Admixtures for concrete, mortar and grout Part 5: Admixtures for sprayed concrete Definitions, requirements, conformity, marking and labellingThe European Standard EN 934-5:2007 has the status of a British StandardICS 91.100.10; 91.100.30g49g50g3g38g50g51g60g44g49g42g
2、3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 934-5:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 Novem
3、ber 2007 BSI 2007ISBN 978 0 580 53953 4National forewordThis British Standard is the UK implementation of EN 934-5:2007. The UK participation in its preparation was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/3, Admixtures.A list of organizations represented on this commi
4、ttee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publica
5、tionAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 934-5October 2007ICS 91.100.10English VersionAdmixtures for concrete, mortar and grout - Part 5: Admixturesfor sprayed concrete - Definitions, requirements, conformity,marking and labellingAdjuvants pour bton, mortier et cou
6、lis - Partie 5 :Adjuvants pour btons projets - Dfinitions, exigences,conformit, marquage et tiquetageZusatzmittel fr Beton, Mrtel und Einpressmrtel - Teil 5:Zusatzmittel fr Spritzbeton - Begriffe, Anforderungen,Konformitt, Kennzeichnung und BeschriftungThis European Standard was approved by CEN on 1
7、3 August 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be o
8、btained 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Manag
9、ement Centre has the same status as theofficial 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
10、, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and b
11、y any means reservedworldwide for CEN national Members.Ref. No. EN 934-5:2007: EEN 934-5:2007 (E) 2 Contents Page Foreword3 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 3.1 General definitions 6 3.2 Specific definitions6 4 Requirements.7 4.1 General requirements7 4.2 Specific requir
12、ements .7 5 Sampling.10 6 Conformity control.10 7 Evaluation of conformity.11 8 Marking and labelling 11 8.1 General11 8.2 Designation of admixtures11 8.3 Additional information 11 Annex A (informative) Content and release of dangerous substances.12 Annex B (normative) Reference concrete for testing
13、 consistence control admixture 13 B.1 General13 B.2 Cement content13 B.3 Aggregates .13 B.4 Consistence13 B.5 Compressive strength.14 B.6 Test report 14 Annex C (normative) Measurement of tensile bond strength.15 C.1 General15 C.2 Preparation of the control and test mix.15 C.3 Applying the concrete
14、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 Directive17 ZA.1 Scope and relevant characteristics .17 ZA.2 Procedure for attestation of conformity of admixtures for spr
15、ayed 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 labelling20 Bibliography 22 EN 934-5:2007 (E) 3 Foreword This document (EN 934-5:2007) has been prepared by Technical Committee CEN/TC 104 “Concrete and related p
16、roducts”, 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. Att
17、ention 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 a
18、nd 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
19、 which is comprised of the following parts: Part 1: Common requirements1)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 prestr
20、essing 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
21、 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 submit
22、ted 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 ne
23、ed 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: -
24、Table 1: requirements in line 5 (Conventional dry material content), 7 (Total chlorine) and 8 (Water soluble chloride); - Table 2: heading of table; curing conditions in footnote d; 1) This document is under preparation. EN 934-5:2007 (E) 4 - Table 3: heading of table; - Table 4: heading of table; -
25、 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 organization
26、s 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,
27、Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 934-5:2007 (E) 5 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-
28、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
29、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, Meth
30、ods 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 4
31、80-2, 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
32、 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 conc
33、rete, 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, Tes
34、ting fresh concrete Part 5: Flow table test EN 12390-3, Testing hardened concrete Part 3: Compressive strength of test specimens EN 934-5:2007 (E) 6 EN ISO 1158, Plastics Vinyl chloride homopolymers and copolymers Determination of chlorine content (ISO 1158:1998) ISO 758, Liquid chemical products fo
35、r 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 perfor
36、mance 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
37、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 Stan
38、dard 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 admixtu
39、re 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, w
40、here 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 9
41、34-2 EN 934-5:2007 (E) 7 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 Na2O-equivalent) not exceeding 1,0 % by mass of the admixture 3.2.4 consistence control admixture admixture that ret
42、ains 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 betwee
43、n 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 requirem
44、ents 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
45、3 Bond improving admixture Table 4 These requirements shall be satisfied within the recommended range of dosage. EN 934-5:2007 (E) 8 Table 1 General requirements iProperty Test method Requirements 1 Homogeneity aVisual Homogeneous when used. Segregation shall not exceed the limit stated by the manuf
46、acturer. 2 ColouraVisual Uniform and similar to the description declared by the manufacturer. 3 Effective component aEN 480-6 bInfrared spectra to show no significant change with respect to the effective component when compared to reference spectrum provided by the manufacturer. 4 Relative density a
47、ISO 758 D 0,03 if D 1,10 D 0,02 if D 1,10 Where D is the manufacturers stated value of density. 5 Conventional dry material content aEN 480-8 c0,95 T X 1,05 T, if T 20 % 0,90 T X 1,10 T, if T 20 % T is manufacturers stated value % m/m.; X is test result % by mass on dry material content. 6 pH-Value
48、a(only for liquid admixtures) ISO 4316 Manufacturers stated value 1 or within manufacturers stated range. 7 Total chlorine a dEN ISO 1158 eEither 0,10 % by mass or not above the manufacturers stated range. 8 Water soluble chloride aEN 480-10 Either 0,10 % by masshor not above the manufacturers state
49、d range. 9 Alkali content (Na2O-equivalent) aEN 480-12 Not above the manufacturers stated maximum. 1,0 % by mass for non-alkaline sprayed concrete set accelerating admixture. 10 Corrosion behaviour f g No corrosion promotion effects on steel embedded in concrete. aManufacturers stated value shall be provided in writing, to the user, on request. bIf the method in EN 480-6 is not suitable, the manufacturer shall recommend an alternative test method. cIf the method in EN 480-
