1、BRITISH STANDARDBS EN 934-1:2008Admixtures for concrete, mortar and grout Part 1: Common requirementsICS 91.100.30g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43
2、g55g3g47g36g58BS EN 934-1:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2008 BSI 2008ISBN 978 0 580 56625 7National forewordThis British Standard is the UK implementation of EN 934-1:2008.The UK participation in its preparation
3、 was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/3, Admixtures.A list of organizations represented on this committee 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
4、for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 934-1January 2008ICS 91.100.30English VersionAdmixtures for concrete, mortar and
5、grout - Part 1: CommonrequirementsAdjuvants pour bton, mortier et coulis - Partie 1 :Exigences communesZusatzmittel fr Beton, Mrtel und Einpressmrtel - Teil 1:Gemeinsame AnforderungenThis European Standard was approved by CEN on 24 October 2007.CEN members are bound to comply with the CEN/CENELEC In
6、ternal 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 obtained on application to the CEN Management Centre or to any CEN mem
7、ber.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 Management Centre has the same status as theofficial versions.CEN members
8、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, Switze
9、rland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 93
10、4-1:2008: EEN 934-1:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and Definitions .6 4 General requirements6 5 Corrosion behaviour .8 5.1 Testing and labelling .8 5.2 Test requirement8 6 Special requirements 8 Annex A (normative) Approved and declared
11、lists for corrosion behaviour9 A.1 Approved list 9 A.2 Declared list10 EN 934-1:2008 (E) 3 Foreword This document (EN 934-1:2008) 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 st
12、atus of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2008, and conflicting national standards shall be withdrawn at the latest by July 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject
13、 of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This standard is part of the series EN 934 “Admixtures for concrete, mortar and grout”, which is comprised of the following additional parts: - Part 2 Concrete admixtures Definitions, r
14、equirements, 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 con
15、crete - Definitions, requirements, conformity, marking and labelling - Part 6 Sampling, conformity control and evaluation of conformity This draft European Standard is used with the standards of the EN 480 series which comprises the test methods for admixtures. This standard has been prepared under
16、a mandate issued to CEN by the European Commission and the European Free Trade Association and supports essential requirements of the Construction Products Directive. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to imple
17、ment 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
18、and the United Kingdom. EN 934-1:2008 (E) 4 Introduction This European Standard covers the requirements that are common to all admixtures. The general requirements replace those which were previously included in EN 934 parts 2 to 5. They include the requirements for the effect on corrosion behaviour
19、 when admixtures are used in concrete, mortar or grout containing embedded metal. The requirements for corrosion behaviour in this standard include an approved list and a declared list of active substances used in some admixtures. These lists are based on experience, which shows that the use of admi
20、xtures only containing substances on the approved list do not promote the corrosion of embedded steel. Materials on the declared list are subject, in some countries, to national restrictions on their use for certain applications and should be declared on the CE mark. The specific requirements that c
21、haracterise the performance of an admixture in a cementitous mix are detailed in EN 934 parts 2 to 5. The special requirements are new and relate to specific uses of admixtures and/or their effect on the environment. It is anticipated that, in the future, special requirements will result from Europe
22、an legislation and, for example, will be applicable to admixtures used in concrete or mortar in contact with drinking water and to the release of dangerous regulated substances. EN 934-1:2008 (E) 5 1 Scope This European Standard specifies the common requirements for all admixtures covered by EN 934-
23、2, EN 934-3, EN 934-4 and EN 934-5, which contain the specific requirements for each type of admixture. The requirements for corrosion behaviour are not applicable to chloride based admixtures. 2 Normative references The following referenced documents are indispensable for the application of this do
24、cument. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 196-2, Methods of testing cement - Part 2: Chemical analysis of cement EN 197-1, Cement - Part 1: Composition, specifications and
25、 conformity criteria for common cements EN 206-1:2000, Concrete - Part 1: Specification, performance, production and conformity 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: Determin
26、ation 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 480-12, Admixtures for concrete, mortar and grout Test methods Part 12: Determination of the alkali content of admixtures E
27、N 480-14, Admixtures for concrete, mortar and grout Test methods Part 14: Determination of the effect on corrosion susceptibility of reinforcing steel by potentiostatic electro-chemical test EN 934-2, Admixtures for concrete, mortar and grout - Part 2: Concrete admixtures Definitions, requirements,
28、conformity, marking and labelling EN 934-3, Admixtures for concrete, mortar and grout Part 3: Admixtures for masonry mortar Definitions, requirements, conformity, marking and labelling EN 934-4, Admixtures for concrete, mortar and grout Part 4: Admixtures for grout for prestressing tendons - Definit
29、ions, requirements, conformity, marking and labelling EN 934-5, Admixtures for concrete, mortar and grout Part 5: Admixtures for sprayed concrete - Definitions, requirements, conformity, marking and labelling EN ISO 1158, Plastics - Vinyl chloride homopolymers and copolymers - Determination of chlor
30、ine content (ISO 1158:1998) ISO 758, Liquid chemical products for industrial use Determination of density at 20degreesC ISO 4316, Surface active agents Determination of pH of aqueous solutions Potentiometric method EN 934-1:2008 (E) 6 3 Terms and Definitions For the purposes of the document, the fol
31、lowing terms and definitions apply. 3.1 common requirements requirements that apply to all admixtures within the scope of EN 934-2, EN 934-3, EN 934-4 and EN 934-5 3.2 general requirements requirements that characterise the admixture by physical and chemical measurements and that apply to all admixt
32、ures within the scope of EN 934-2, EN 934-3, EN 934-4 and EN 934-5 3.3 specific requirements requirements detailed in EN 934-2, EN 934-3, EN 934-4 or EN 934-5, which characterise the performance of the admixture in a cementitious mix 3.4 special requirements requirements which apply to admixtures wi
33、thin the scope of EN 934-2, EN 934-3, EN 934-4 and EN 934-5 in relation to their effect on the environment or when used for specific applications 3.5 approved list list of substances used as ingredients in admixtures that are accepted for use without the need for further testing in relation to the p
34、roperty stated in the list NOTE Approved lists are specific to a requirement detailed in this standard. 3.6 declared list list of substances used as ingredients in admixtures that do not have to be tested in relation to the property stated in the list but have to be declared because, in some countri
35、es, they are subject to national restrictions on their use for certain applications 4 General requirements All admixtures within the scope of EN 934-2, EN 934-3, EN 934-4 and EN 934-5 shall conform to the requirements of Table 1. EN 934-1:2008 (E) 7 Table 1 General requirements Property Test method
36、Requirements 1 HomogeneityaVisual Homogeneous when used. Segregation shall not exceed the limit stated by the manufacturer. 2 ColouraVisual Uniform and similar to the description declared by the manufacturer. 3 Effective componentaEN 480-6bInfra red spectra to show no significant change with respect
37、 to the effective component when compared to the reference spectrum provided by the manufacturer. 4 Absolute densitya (for liquid admixtures only) ISO 758cD 0,03 if D 1,10 kg/l D 0,02 if D 1,10 kg/lwhere D is manufacturers stated value of density. 5 Conventional dry material contentaEN 480-8d0,95T X
38、 1,05T if T 20 % 0,90T X 1,10T if T 20 % T is manufacturers stated value % by mass; X is test result % by mass. 6 pH valuea(for liquid admixtures only) ISO 4316 Manufacturers stated value 1 or within manufacturers stated range. 7 Total chlorinea fEN ISO 1158gEither 0,10 % by masseor not above manufa
39、cturers stated value. 8 Water soluble chlorideaEN 480-10 Either 0,10 % by masseor not above manufacturers stated value. 9 Alkali content (Na2O equivalent)aEN 480-12 Not above manufacturers stated maximum value in % by mass. 10 Corrosion behaviour EN 480-14 See clause 5. 11 Silicon dioxide SiO2conten
40、ta h iEN 196-2 (procedure 13) Not above manufacturers stated maximum value in % by mass. 0 aManufacturers stated values and characteristics shall be provided in writing to the user upon request. bIf the method in EN 480-6 is not suitable, the manufacturer shall specify a documented alternative test
41、method. cISO 758 is the reference method. Another method may be used provided that it can show essentially the same results as the method in ISO 758. dIf the method in EN 480-8 is not suitable, the manufacturer shall specify a documented alternative test method. eWhere the chloride content is 0,10 %
42、 by mass the admixture may be described as “chloride free”. fIf there is no significant difference between the total chlorine and the water soluble chloride content, only the water soluble chloride content should be determined in subsequent tests on the admixture involved. gThe procedure in EN ISO 1
43、158 shall be modified as follows: - Increase the sample size in method B to 0,1 g of dry admixture; - Use silver nitrate and ammonium thiocyanate solutions at 0,01 N. hThe silicon dioxide content is only required when silica (see A.1) is a constituent intended to exceed 5 % by mass of the admixture.
44、 I This requirement does not apply to natural sand. EN 934-1:2008 (E) 8 5 Corrosion behaviour 5.1 Testing and labelling No testing for corrosion behaviour is required for admixtures containing only substances on the approved list A.1 and declared list A.2. Admixtures containing any substances not on
45、 the approved list A.1 or declared list A.2 shall be tested in accordance with EN 480-14 and meet the test requirement in 5.2. Admixtures containing substances on the declared list A.2 shall have the names of the substances declared on the label. NOTE For admixtures containing chloride and chlorine
46、the requirements of Table 1, rows 7 and 8 apply. 5.2 Test requirement When tested in accordance with EN 480-14 the calculated current density of each of three test mix specimens shall not exceed 10 A/cm2at any time between 1 h and 24 h. In addition there shall be a similar trend in the progression o
47、f the current density vs. time curves for the control mix and the test mix. 6 Special requirements NOTE Special requirements are currently being drafted by an Expert Group of the European Commission responsible for Construction Products in contact with Drinking Water. The requirements for admixtures
48、, which are sold into concrete for drinking water applications, will be added to this European standard by amendment when they become available. EN 934-1:2008 (E) 9 Annex A (normative) Approved and declared lists for corrosion behaviour A.1 Approved list Acetates Melamine formaldehyde sulfonate Alka
49、nolamine Natural resins and salts thereof Anionic and cationic lattices Naphthalene formaldehyde sulfonate Aluminates Phosphonic acid and salts thereof Aluminium powder Phosphates Benzoates Poly acrylate (acrylic ester polymers) Borates Poly carboxylate polymers Carbonates Poly carboxylate ethers Citrates PolysaccharidesCellulose and cellulose ethers Poly ethers Ethoxylated amines Polyvinyls and their derivatives Fatty acids and fatty acid salts/esters Saccharose Fillers (cement and its main constituent
