1、BS EN 998-2:2016Specification for mortar for masonryPart 2: Masonry mortarBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 998-2:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 998-2:2016.It supersedes BS EN 998-2:2010
2、which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/519/2, Mortar.A list of organizations represented on this committee can be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. U
3、sers are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 84515 4 ICS 91.100.10 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authorit
4、y of the Standards Policy and Strategy Committee on 30 November 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 998-2:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 998-2 November 2016 ICS 91.100.10 Supersedes EN 998-2:2010English Version Specification
5、for mortar for masonry - Part 2: Masonry mortar Dfinitions et spcifications des mortiers pour maonnerie - Partie 2: Mortiers de montage des lments de maonnerie Festlegungen fr Mrtel im Mauerwerksbau - Teil 2: Mauermrtel This European Standard was approved by CEN on 9 April 2016. CEN members are boun
6、d 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. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CE
7、N-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 made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre h
8、as the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, L
9、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Br
10、ussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 998-2:2016 EBS EN 998-2:2016EN 998-2:2016 (E) 2 Contents Page European foreword . 4 Introduction 6 1 Scope 7 2 Normative references 7 3 Terms and definitions . 8 4 Materia
11、ls 10 5 Product characteristics 10 5.1 General . 10 5.2 Characteristics of fresh mortar . 11 5.2.1 Workable life . 11 5.2.2 Chloride content . 11 5.2.3 Air content 11 5.3 Proportion of constituents 11 5.4 Characteristics of hardened mortar 11 5.4.1 Compressive strength . 11 5.4.2 Bond strength 12 5.
12、4.3 Water absorption . 13 5.4.4 Water vapour permeability 13 5.4.5 Density (dry hardened mortar) 13 5.4.6 Thermal conductivity . 13 5.4.7 Durability 13 5.4.8 Reaction to fire 13 5.4.9 Dangerous substances 13 5.5 Additional requirements for thin layer mortars 14 5.5.1 General . 14 5.5.2 Aggregates 14
13、 5.5.3 Correction time . 14 5.6 Mixing of mortar on site 14 6 Designation of masonry mortar 14 7 Marking and labelling . 15 8 Assessment and verification of constancy of performance (AVCP) . 15 8.1 General . 15 8.2 Product-type determination 15 8.2.1 General . 15 8.2.2 Sampling 16 8.2.3 Reference te
14、st 16 8.2.4 Repeating of product-type determination 16 8.2.5 Recording 16 8.2.6 Application of test methods 16 8.3 Factory Production Control, FPC 16 8.3.1 General . 16 8.3.2 Process control 16 BS EN 998-2:2016EN 998-2:2016 (E) 3 8.3.3 Finished product conformity 17 8.3.4 Statistical techniques 17 8
15、.3.5 Traceability marking and stock control of products 17 8.3.6 Non-conforming products . 18 Annex A (normative) Sampling for product-type determination and independent testing of consignments . 19 A.1 General . 19 A.2 Sampling procedure 19 Annex B (informative) Use of masonry units and masonry mor
16、tar 20 Annex C (normative) Characteristic initial shear strength of designed masonry mortars. 22 Annex D (informative) Indicative test frequencies for Factory Production Control (FPC) . 23 Annex ZA (informative) Relationship of this European Standard with Regulation (EU) No.305/2011 25 ZA.1 Scope an
17、d relevant characteristics 25 ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) 26 ZA.3 Assignment of AVCP tasks . 26 Bibliography . 28 BS EN 998-2:2016EN 998-2:2016 (E) 4 European foreword This document (EN 998-2:2016) has been prepared by Technical Committee CEN/TC 125
18、“Masonry”, the secretariat of which is held by BSI. This document supersedes EN 998-2:2010. 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 May 2017, and conflicting national standards shall be wi
19、thdrawn at the latest by August 2018. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports basic requirements for construction works of the EU Construction Products Regulation (Regulation (EU) No 305/2011). It al
20、so takes into account the general rules for reinforced and unreinforced masonry in Eurocode 6. For relationship with EU Regulation, see informative Annex ZA, which is an integral part of this document. The most significant changes compared to the previous edition include: a) implementation of new re
21、gulatory (CPR) terminology where relevant; b) new subclause 5.4.2.2 on Flexural bond strength (deriving from Finnish legal query); c) revised clauses on Assessment and verification of constancy of performance (AVCP); d) new explanatory note added to tabulated values in Annex C; e) new annex with ind
22、icative frequencies on testing for factory production control (informative); f) revised Annex ZA (informative); g) some minor editorial changes. No changes to existing technical classes and/or threshold levels have been made. EN 998, Specification for mortar for masonry consists of: Part 1: Renderin
23、g and plastering mortar; Part 2: Masonry mortar. Attention 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. BS EN 998-2:2016EN 998-2:2016 (E) 5 A
24、ccording to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germ
25、any, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 998-2:2016EN 998-2:2016 (E) 6 Introduction The characteristics required of a morta
26、r are related to its use. They are considered in two groups, namely those relating to the fresh, unhardened mortar and those to the hardened mortar. BS EN 998-2:2016EN 998-2:2016 (E) 7 1 Scope This European Standard specifies requirements for factory-made masonry mortars (bedding, jointing and point
27、ing) for use in masonry walls, columns and partitions (e.g. facing and rendered masonry, load bearing or non-load bearing masonry structures for buildings and civil engineering works). This European Standard defines for fresh mortar the performance related to workable life, chloride content, air con
28、tent, density and correction time (for thin-layer mortar only). For hardened mortar it defines, e.g. performance related to compressive strength, bond strength, density measured according to the corresponding test methods contained in separate European Standards. This European Standard provides for
29、the assessment and verification of constancy of performance (AVCP) of the product to this European Standard. The marking requirement for products covered by this European Standard is included. This European Standard covers masonry mortars defined in Clause 3 with the exception of site made mortar. H
30、owever, this European Standard or part of this European Standard may be used in conjunction with codes of application and national specifications covering site made mortar. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indisp
31、ensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 771 (all parts), Specification for masonry units EN 1015-1, Methods of test for mortar for masonry - Part 1:
32、 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 1015-7, Methods of test for mortar for masonry - Part 7: Determination of air content of fresh mortar EN 1015-9, Me
33、thods 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 for masonary - Part 11: Determin
34、ation of flexural and compressive strength of hardened mortar EN 1015-17, Methods of test for mortar for masonry - Part 17: Determination of water-soluble chloride content of fresh mortars EN 1015-18, Methods of test for mortar for masonry - Part 18: Determination of water absorption coefficient due
35、 to capillary action of hardened mortar EN 1052-3, Methods of test for masonry - Part 3: Determination of initial shear strength EN 1052-5, Methods of test for masonry - Part 5: Determination of bond strength by the bond wrench method BS EN 998-2:2016EN 998-2:2016 (E) 8 EN 1745:2012, Masonry and mas
36、onry products - Methods for determining thermal properties EN 13501-1, Fire classification of construction products and building elements Part 1: Classification using test data from reaction to fire tests 3 Terms and definitions For the purposes of this document, the following terms and definitions
37、apply. 3.1 masonry mortar mix of one or more inorganic binders, aggregates, water, and sometimes additions and/or admixtures for bedding, jointing and pointing of masonry 3.2 fresh masonry mortar mortar completely mixed and ready for use 3.3 Type of masonry mortar, defined according to concept 3.3.1
38、 designed masonry mortar mortar whose composition and manufacturing method is chosen by the producer in order to achieve specified properties (performance concept) 3.3.2 prescribed masonry mortar mortar made in predetermined proportions, the properties of which are assumed from the stated proportion
39、 of the constituents (recipe concept) 3.4 Type of masonry mortar, defined according to properties and/or use 3.4.1 general purpose masonry mortar (G) masonry mortar without special characteristics 3.4.2 thin layer masonry mortar (T) designed masonry mortar with a maximum aggregate size less than or
40、equal to a prescribed figure (see 5.5.2) 3.4.3 lightweight masonry mortar (L) designed masonry mortar with a dry hardened density below a prescribed figure (see 5.4.5) BS EN 998-2:2016EN 998-2:2016 (E) 9 3.5 Type of masonry mortar, defined according to the mode of manufacture 3.5.1 factory-made maso
41、nry mortar mortar batched and mixed in a factory Note 1 to entry: It can be “dry mortar“ which is ready-mixed, only requiring the addition of water or “wet mortar“ which is supplied ready for use. 3.5.2 semi-finished factory made masonry mortar mortar described in either 3.5.2.1 or 3.5.2.2 3.5.2.1 p
42、re-batched masonry mortar mortar whose constituents are wholly batched in a factory, supplied to the building site and mixed there according to the manufacturers specification and conditions 3.5.2.2 premixed lime-sand- masonry mortar mortar whose constituents are wholly batched and mixed in a factor
43、y, supplied to the building site where further constituents specified or provided by the factory are added (e.g. cement) 3.5.3 site-made masonry mortar mortar composed of individual constituents batched and mixed on the building site 3.6 binder material used to hold solid particles together in a coh
44、erent mass, e.g. cement, building lime 3.7 aggregate granular material that does not contribute to the hardening reaction of the mortar 3.8 admixture material added in small quantities to produce specified modifications to the properties 3.9 addition finely divided inorganic material (which is not a
45、n aggregate or binder) that can be added to mortar in order to improve or achieve special properties 3.10 bond strength adhesion between the masonry mortar and the masonry unit Note 1 to entry: The bond strength can either be determined as shear bond strength or as flexural bond strength. BS EN 998-
46、2:2016EN 998-2:2016 (E) 10 3.11 declared value value that a manufacturer is confident in achieving, taking into account the precision of test method, the variability of the production process(es) and the product performance Note 1 to entry: Characteristic strength values may be determined in accorda
47、nce with the relevant test methods. 3.12 masonry subjected to severe exposure masonry 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 3.13 masonr
48、y subjected to moderate exposure masonry or elements of masonry which are exposed to moisture and freeze/thaw-cycling, excluding constructions subjected to severe exposure 3.14 masonry subjected to passive exposure masonry or elements of masonry which are not intended to be exposed to moisture and f
49、reezing conditions 3.15 product-type set of representative performance levels or classes of a construction product, in relation to its essential characteristics, produced using a given combination of raw materials or other elements in a specific production process Note 1 to entry: The definition is taken from Regulation (EU) No. 305/2011. 4 Materials Raw materials shall have characteristics permitting the finished product to conform to the requirements of this European Standard. The manufacturer shall keep records of how suitability of materials is established. 5
