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1、BRITISH STANDARD BS EN 998-2:2002 Specification for mortar for masonry Part 2: Masonry mortar The European Standard EN 998-2:2001 has the status of a British Standard ICS 91.100.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Tue
2、Nov 07 06:46:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 998-2:2002 This British Standard, having been prepared under the direction of the Sector Policy and Strategy Committee for Building and Civil Engineering, was published under the authority of the Standards Policy and Strategy Committee
3、 on 21 February 2002 BSI 21 February 2002 ISBN 0 580 39118 3 National foreword This British Standard is the official English language version of EN 998-2:2001. This edition of EN 998-2, which is an “ordinary” European Standard, will be superseded in due course by a “harmonized” edition of this Europ
4、ean Standard. The “harmonized” EN 998-2 will fully take into account the requirements of the European Commission mandate M116, Masonry and related products, given under the EU Construction Products Directive (89/106/EEC), and is intended to lead to CE marking. The “harmonized” edition of EN 998-2 is
5、 the subject of transitional arrangements agreed under the Commission mandate. The Member States have agreed a nominal transition period for the co-existence of the future “harmonized” edition of EN 998-2 and their corresponding national standard(s). It is intended that this period will comprise a n
6、ominal nine month period during which any required changes to national regulations are to be made, followed by a further nominal twelve month period for the implementation of CE marking. At the end of this co-existence period, the national standard(s) will be withdrawn. In the UK, the corresponding
7、national standards are: BS 4551-1:1998, Methods of testing mortars, screeds and plasters Part 1: Physical testing. BS 4721:1981, Specification for ready-mixed building mortars. BS 5838-2:1980, Specification for dry packaged cementitious mixes Part 2: Prepacked mortar mixes. Commentary on the differe
8、nces between these national standards and BS EN 998-2:2002 are given in a national annex NA. The UK participation in the preparation of BS EN 998-2:2002 was entrusted by Technical Committee B/519, Masonry and associated testing, to Subcommittee B/519/2, Mortar, which has the responsibility to: A lis
9、t of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Internation
10、al Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a Britis
11、h Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European devel
12、opments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 21 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication
13、Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:46:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 998-2 August 2001 ICS 91.100.10 English version Specification for mortar for masonry Part 2: Masonry mortar Specificat
14、ions des mortiers pour maonnerie Partie 2: Mortiers de montage Festlegungen fr Mrtel im Mauerwerksbau Teil 2: Mauermrtel This European Standard was approved by CEN on 5 August 2000. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving th
15、is 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 (En
16、glish, 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 Repu
17、blic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart,
18、 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 998-2:2001 E Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:46:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 998-2:2001 (E) Contents Page Forewor
19、d3 Introduction4 1 Scope4 2 Normative references4 3 Terms and definitions5 4 Materials6 5 Requirements7 6 Designation and classification of masonry mortar10 7 Marking and labelling10 8 Evaluation of conformity11 Annex A (normative) Sampling for initial type testing and independent testing of consign
20、ments13 Annex B (informative) Use of masonry units and masonry mortar14 Bibliography16 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:46:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 998-2:2001 (E) 3 Foreword This European Standard has been prepared by Technical Committee CEN/TC 125, M
21、asonry, the Secretariat of which is held by BSI. 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 2001, and conflicting national standards shall be withdrawn at the latest by December 2001
22、. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports the essential requirements of the EU Construction Products Directive (89/106/EEC). Annex A of this European Standard is normative, annex B is inform
23、ative. 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, Norw
24、ay, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:46:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 998-2:2001 (E) 4 Introduction The properties required of a mortar are related to its use. They are considered in two groups v
25、iz.: those relating to the fresh, unhardened mortar and those to the hardened mortar. Annex B is an informative annex giving guidance in the application and use of masonry units and masonry mortar within the scope of this standard. It has not been possible for the time being to produce a specific re
26、quirement and method of test for bond strength of the masonry mortar to specified masonry units. This draft standard nevertheless addresses the matter indirectly via reference to shear testing of masonry specimens. 1 Scope This part of EN 998 specifies requirements for masonry mortars (bedding, join
27、ting and pointing) for use in masonry (e.g. facing and rendered masonry, loadbearing or non-loadbearing masonry structures, including internal linings and partitions, for building and civil engineering). To support the aim of achieving a performance-related standard, as far as practicable, the stand
28、ard refers only to the properties of the product and not to its method of manufacture, except where this is unavoidable in the description of the characteristics of the product. It defines for fresh mortars the performance related to workable life, chloride content, air content, correction time (for
29、 thin layer mortars) and density. For hardened mortars it defines the performance related to compressive strength, bond strength, durability and thermal properties and density. All performances are measured according to the corresponding test methods contained in separate European Standards. It prov
30、ides for the evaluation of conformity of the product to this European Standard. The marking requirement for products covered by this European Standard is included. This standard covers masonry mortars defined in clause 3 with the exception of site made mortars. However, this standard or part of this
31、 standard may be used in conjunction with codes of applications and national specifications covering site made mortars. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropria
32、te 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 publicatio
33、n referred to applies (including amendments). EN 1015-1, Methods of test for mortar for masonry Part 1: Determination of particle size distribution (by sieve analysis). EN 1015-2, Methods of test for mortar for masonry Part 2: Bulk sampling of mortars and preparation of test mortars. EN 1015-6, Meth
34、ods of test for mortar for masonry Part 6: Determination of bulk density of fresh mortar. EN 1015-7, Methods of test for mortar for masonry Part 7: Determination of air content of fresh mortar. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:46:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
35、 EN 998-2:2001 (E) 5 EN 1015-9, Methods of test for mortar for masonry Part 9: Determination of workable life and correction time of fresh mortar. EN 1015-10, Methods of test for mortar for masonry Part 10: Determination of dry bulk density of hardened mortar. EN 1015-11, Methods of test for mortar
36、for masonry Part 11: Determination of flexural and compressive strength of hardened mortar. prEN 1015-17, Methods of test for mortar for masonry Part 17: Determination of water soluble chloride content of fresh mortar. prEN 1052-3, Methods of test for masonry Part 3: Determination of initial shear s
37、trength. prEN 1745, Masonry and masonry products Methods for determining design thermal values. 3 Terms and definitions For the purpose of this standard, the following terms and definitions apply. 3.1 Masonry mortar: A mix of one or more inorganic binders, aggregates, water, and sometimes additions
38、and/or admixtures. 3.1.1 fresh mortar: A mortar completely mixed and ready for use in masonry. 3.2 Type of mortar, defined according to concept 3.2.1 designed mortar: A mortar whose composition and manufacturing method is chosen by the producer in order to achieve specified properties (performance c
39、oncept). 3.2.2 prescribed mortar: A mortar made in predetermined proportions, the properties of which are assumed from the stated proportion of the constituents (recipe concept). 3.3 Type of mortar, defined according to application 3.3.1 general purpose mortar: A mortar for use in joints with a thic
40、kness greater than 3 mm and in which only normal weight aggregates are used. 3.3.2 thin layer mortar: A designed mortar for use in joints between 1 mm and 3 mm in thickness. 3.3.3 lightweight masonry mortar: A designed masonry mortar with a dry hardened density below a prescribed figure (see 5.3.4).
41、 3.4 Type of mortar, defined according to the location or mode of manufacture 3.4.1 factory made mortar: A mortar batched and mixed in a factory. It may be “dry mortar” which is ready-mixed, only requiring the addition of water or “wet mortar” which is supplied ready for use. 3.4.2 semi-finished fac
42、tory made mortar: A mortar described in either 3.4.2.1 or 3.4.2.2. 3.4.2.1 prebatched mortar: Constituents wholly batched in a factory, supplied to the building site and mixed there according to the manufacturers specification and conditions. 3.4.2.2 premixed lime-sand-mortar: Constituents wholly ba
43、tched and mixed in a factory, supplied to the building site where further constituents specified or provided by the factory are added (e.g. cement). Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:46:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 998-2:2001 (E) 6 3.4.3 site-made mortar:
44、A mortar composed of individual constituents batched and mixed on the building site. 3.5 binder: Material used to hold solid particles together in a coherent mass, e.g. cement, building lime. 3.6 aggregate: Granular material that does not contribute to the hardening reaction of the mortar. 3.7 admix
45、ture: Material added in small quantities in relation to the mass of binder of the mortar to produce specified modifications to the properties. 3.8 addition: A finely divided inorganic material (which is not an aggregate or binder) that may be added to mortar in order to improve or achieve special pr
46、operties. 3.9 bond strength: Adhesion perpendicular to the bed between the masonry mortar and the masonry unit. 3.10 declared value: A value that a manufacturer is confident in achieving, bearing in mind the precision of test and variability of process. 3.11 masonry subjected to severe exposure: Mas
47、onry or elements of masonry which are subjected to saturation with water (driving rain, ground water) combined with frequent freeze/thaw-cycling due to climatic conditions, and absence of protective features. 3.12 masonry subjected to moderate exposure: Masonry or elements of masonry which are expos
48、ed to moisture and freeze/thaw-cycling, excluding constructions subjected to severe exposure. 3.13 masonry subjected to passive exposure: Masonry or elements of masonry which are not intended to be exposed to moisture and freezing conditions. 4 Materials 4.1 Inorganic binders Inorganic binders with
49、established suitability for mortars shall be used. When EN standards are available and deal with inorganic binders suitable for mortars, these binders should be used. NOTE Where no ENs are currently available, existing ENVs, European Technical approvals or National Specifications which deal with inorganic binders suitable for mortars may be taken into account. 4.2 Aggregates Aggregates with established suitability for mortars shall be used. When EN standards are available and deal with aggregates suitable for mortars, these aggregates sh