09-30180272-DC.pdf

a Date: 19 January 2009 Origin: European Latest date for receipt of comments: 30 April 2009 Project no.: 2008/01089 Responsible committee: B/517/3 Admixtures Interested committees: Title: Draft BS EN 934-3 Admixtures for concrete, mortar and grout Part 3: Admixtures for masonry mortar - Definitions, requirements, conformity, marking and labelling Supersession information: If this document is published as a standard, the UK implementation of it will supersede BSEN934-3 : 2003 and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 30 April 2009. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email cservicesbsigroup.com. British, International and foreign standards are also available from BSI Customer Services. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/www.bsigroup.com. Direct tel: Responsible Committee Secretary: Mr M Awaleh (BSI) E-mail: mussa.awalehbsigroup.com Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 8.0 DPC: 09/30180272 DC Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:27, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on European discussions in which the UK has taken an active part. Your comments on this draft are welcome and will assist in the preparation of the consequent British Standard. Comment is particularly welcome on national, legislative or similar deviations that may be necessary. Even if this draft standard is not approved by the UK, if it receives the necessary support in Europe, the UK will be obliged to publish the official English Language text unchanged as a British Standard and to withdraw any conflicting standard. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft® Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/www.bsigroup.com/en/Standards-and-Publications/Current-work/DPCs/ Template for comments and secretariat observations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:27, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM FINAL DRAFT prEN 934-3 January 2009 ICS 01.040.91; 91.100.10Will supersede EN 934-3:2003 English Version Admixtures for concrete, mortar and grout - Part 3: Admixtures for masonry mortar - Definitions, requirements, conformity and marking and labelling Adjuvants pour béton, mortier et coulis - Adjuvants pour mortier à maçonner - Partie 3: Définitions, exigences, conformité, marquage et étiquetage Zusatzmittel für Beton, Mörtel und Einpressmörtel - Teil 3: Zusatzmittel für Mauermörtel - Definitionen, Anforderungen, Konformität, Kennzeichnung und Beschriftung This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee CEN/TC 104. If this draft becomes a European Standard, 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. This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels © 2009 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. prEN 934-3:2009: E Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:27, Uncontrolled Copy, (c) BSI prEN 934-3:2009 (E) 2 Contents page Foreword3 1 Scope 4 2 Normative references5 3 Terms and definitions .5 4 Requirements.6 5 Sampling.8 6 Conformity control.8 7 Evaluation of conformity.9 8 Marking and labelling9 8.1 General9 8.2 Designation of admixtures9 8.3 Additional information 9 Annex A (informative) Content and release of dangerous substances.10 Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive11 ZA.1 Scope and relevant characteristics .11 ZA.2 Procedure for attestation of conformity of admixtures for masonry mortar.12 ZA.2.1 System of attestation of conformity 12 ZA.2.2 EC certificate and declaration of conformity14 ZA.3 CE marking and labelling15 Bibiography.17 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:27, Uncontrolled Copy, (c) BSI prEN 934-3:2009 (E) 3 Foreword This document (prEN 934-3:2009) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products”, the secretariat of which is held by DIN. This document is currently submitted to the Unique Acceptance Procedure. 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 document. This document will supersede EN 934-3:2003. This European 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 2 Admixtures for concrete, mortar and grout Part 2: Concrete admixtures 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, evaluation of conformity This European Standard is used with the standards of the EN 480 series which comprise test methods for admixtures. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:27, Uncontrolled Copy, (c) BSI prEN 934-3:2009 (E) 4 1 Scope This European Standard defines and specifies the requirements and conformity criteria for admixtures for use in cement based masonry mortar. It covers two types of admixtures, long term retarding and air entraining/plasticising which are used in ready-mixed and site made masonry mortars. Provisions for the use of admixtures for masonry mortar are not part of this European Standard but are covered by EN 998-1 and EN 998-2. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:27, Uncontrolled Copy, (c) BSI prEN 934-3:2009 (E) 5 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 480-13:2002, Admixtures for concrete, mortar and grout Test methods Part 13: Reference masonry mortar for testing mortar 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 1015-4, Methods of test for mortar for masonry Part 4: Determination of consistence of fresh mortar (by plunger penetration) EN 1015-7, Methods of test for mortar for masonry Part 7: Determination of air content of fresh mortar EN 1015-9, Methods of test for mortar for masonry Part 9: Determination of workable life and correction time of fresh mortar EN 1015-11, Methods of test for mortar for masonry Part 11: Determination of flexural and compressive strength of hardened mortar 3 Terms and definitions For the purposes of this document, the definitions in EN 934-1:2008 and the following apply. 3.1 air entraining/plasticizing admixture admixture which increases workability, or allows water reduction, by incorporating during mixing a controlled quantity of small, uniformly distributed air bubbles which remain after hardening 3.2 set retarding admixture for long term retarded masonry mortar set retarding admixture as defined in EN 934-2 but specifically intended for use in long term retarded mortar incorporating entrained air 3.3 performance ability of an admixture to be effective in its intended use without detrimental effect 3.4 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. The compliance dosage is within the recommended range of dosage 3.5 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 achieved 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. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:27, Uncontrolled Copy, (c) BSI prEN 934-3:2009 (E) 6 3.6 maximum recommended dosage upper limit of the recommended range of dosage 4 Requirements Masonry mortar admixtures, when sampled in accordance with EN 934-6, shall comply with the requirements in EN 934-1:2008 in Table 1 using the test methods listed therein and the additional requirements specific to different types of admixture listed in Table 1. NOTE 1 Tests should be carried out with the admixtures and other materials intended to be used in the mortar to check whether the desired effect can be obtained. For content of substances and release of substances from the hardened mortar which are dangerous to health, hygiene and the environment see Annex A (informative). NOTE 2 For requirements necessary for CE-marking see Annex ZA. Table 1 Additional requirements for specific types of admixture Definition Name of admixture Additional requirements 3.1 Air entraining/plasticizing mixture Table 2 3.2 Set retarding admixture for long term retarded masonry mortar Table 3 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:27, Uncontrolled Copy, (c) BSI prEN 934-3:2009 (E) 7 Table 2 Additional requirements for air entraining/plasticizing admixtures at equal consistence Property Reference mortar Test method Requirement a 1 Air content after standard mixing EN 480-13 EN 1015-7 method A Total air content A1 = (17 ± 3) % by volume 2 Air content after 1 h standing EN 480-13 EN 1015-7 method A A1 3 % 3 Air content after extended mixing EN 480-13 EN 1015-7 method A A1 + 5 % and A1 5 % 4 Reduction in water requirement for standard consistence EN 480-13 EN 480-13 8 % by mass 5 Compressive strength at 28 days EN 480-13 EN 1015-11 Test mix 70 % of control mix a All requirements apply to the same test mix. Table 3 Additional requirements for admixtures for long term retarded, ready to use mortar at equal consistence d Property Reference mortar Test method Requirement a 1 Air content after standard mixing EN 480-13 EN 1015-7 method A Total air content A2 = (17 ± 3) % by volume 2 Air content after extended mixing EN 480-13 EN 1015-7 method A A2 + 5 % and A2 5 % 3 Consistence after 28 h standing b EN 480-13 EN 1015-4 Within 15 mm of initial value 4 Air content after 28 h standing EN 480-13 EN 1015-7 method A 0,70A2 % 5 Resistance to penetration after 72 h c EN 480-13 EN 1015-9 Test mix 1,0 N/mm2 6 Compressive strength at 28 days EN 480-13 EN 1015-11 Test mix 70 % of control mix a All requirements apply to the same test mix