1、BSI Standards PublicationBS EN 771-2:2011+A1:2015BS EN 771-2:2011Specification for masonry unitsPart 2: Calcium silicate masonry unitsBS EN 771-2:2011+A1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 771-2:2011+A1:2015. It supersedes BS EN 771-2:2011, whi
2、ch is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by .EN 771-2 is a “harmonized” European Standard and
3、 fully takes into account the requirements of the European Commission mandate M116, Masonry and related products, given under the EU Construction Products Regulation (Regulation (EU) No 305/2011).EN 771-2 was the subject of transitional arrangements agreed under the Commission mandate. In the UK, th
4、e corresponding national standards were: BS 187:1978, Specification for calcium silicate (sandlime and flintlime) bricks; BS 6649:1985, Specification for clay and calcium silicate modular bricks;which were withdrawn in 2007.The UK participation in its preparation was entrusted by Technical Committee
5、 B/519, Masonry and associated testing, to Subcommittee B/519/1, Masonry units.A list of organizations represented on this committee can be obtained on request to its secretary.EN 771-2 specifies the characteristics and performance requirements for calcium silicate masonry units available throughout
6、 the CEN member countries. It aims to do so in product performance terms, avoiding as far as possible prescriptive requirements but permitting all the traditional designations of calcium silicate units available throughout Europe. The concept of the declared value has been introduced. This is the va
7、lue for the various properties referred to in this standard that the manufacturer claims for the product. There are other notable differences to which the National Annex will refer, in particular the supporting test methods are different and in respect of compressive strength, calcium silicate mason
8、ry units are designated either Category I or Category II.One particular variety of calcium silicate brick available in the UK is the Class 3: Special Purpose (or SP3), whose characteristics are described later in the National Annex.The UK National Annex NA attached to this standard provides an infor
9、mative commentary on the differences between EN 771-2 and BS 187. Nothing in this annex should be construed as specifying requirements other than those contained in the normative parts of this European Standard.Masonry units conforming to this standard need to be CE marked in accordance with the pro
10、cedures in Annex ZA. The significance of the CE marking is that the product manufacturer claims compliance with the “harmonized” requirements given in the normative text of the product standard. These relate to the essential requirements of the EU Construction Products Regulation. Not all product ch
11、aracteristics need necessarily be given on the CE marking, but those product characteristics covered by regulations in force in each EU Member State, BS EN 771-2:2011+A1:2015BRITISH STANDARDwhere the manufacturer intends that the product will be used, do need to be stated.It cannot be assumed that t
12、he declared value of a performance characteristic given for a masonry unit conforming to one part of EN 771 can be directly compared with the same performance characteristic for a masonry unit conforming to another part of EN 771.This publication does not purport to include all the necessary provisi
13、ons of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 79490 2ICS 91.100.25Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published
14、 under the authority of the Standards Policy and Strategy Committee on 30 November 2011.Amendments/corrigenda issued since publicationDate Text affected31 March 2016 Implementation of CEN amendment A1:2015. National Foreword and National Annex NA also updatedThis page deliberately left blankEUROPEAN
15、 STANDARD NORME EUROPENNE EUROPISCHE NORM EN 771-2:2011+A1 August 2015 ICS 91.100.25 Supersedes EN 771-2:2011English Version Specification for masonry units - Part 2: Calcium silicate masonry units Spcifications pour lments de maonnerie - Partie 2: Elments de maonnerie en silico-calcaire Festlegunge
16、n fr Mauersteine - Teil 2: Kalksandsteine This European Standard was approved by CEN on 10 March 2011 and includes Amendment 1 approved by CEN on 11 January 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standar
17、d 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English,
18、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 has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulga
19、ria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Tur
20、key and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.
21、Ref. No. EN 771-2:2011+A1:2015 EEN 771-2:2011+A1:2015 (E) 2 Contents Page European foreword .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Materials and manufacture .8 5 Requirements for calcium silicate masonry units 8 5.1 General 8 5.2 Dimensions and tolerances 9 5.2.1 Dimensio
22、ns .9 5.2.2 Dimensional tolerances . 10 5.3 Configuration 10 5.4 Dry density 11 5.4.1 Gross dry density . 11 5.4.2 Net dry density 11 5.5 Compressive strength 12 5.6 Thermal properties . 12 5.7 Durability . 12 5.8 Water vapour permeability . 13 5.9 Reaction to fire 13 5.10 Water absorption 13 5.11 M
23、oisture movement 13 5.12 Bond strength . 14 5.12.1 General . 14 5.12.2 Declaration based on fixed values 14 5.12.3 Declaration based on tests 14 5.13 Dangerous substances 14 6 !Description, designation, designation code and classification of calcium silicate masonry units“ 14 6.1 Description and des
24、ignation . 14 6.2 Designation codes 15 6.3 Classification . 17 7 Marking 17 8 !Assessment and verification of constancy of performance (AVCP)“ 17 8.1 General . 17 8.2 Product type determination . 17 8.3 Factory production control 18 8.3.1 General . 18 8.3.2 Testing and measuring equipment . 19 8.3.3
25、 Production Equipment . 19 8.3.4 Raw materials 19 8.3.5 Production process 19 8.3.6 Finished product testing 19 8.3.7 Statistical techniques . 19 8.3.8 Marking and stock control of products 20 8.3.9 Traceability 20 8.3.10 Nonconforming products . 20 EN 771-2:2011+A1:2015 (E) 3 Annex A (normative) !S
26、ampling for product type determination tests and for independent testing of consignments“ 21 A.1 General . 21 A.2 Sampling procedure 21 A.2.1 General . 21 A.2.2 Random sampling . 21 A.2.3 Representative sampling 21 A.2.4 Dividing the sample . 22 A.2.5 Number of masonry units required for testing . 2
27、2 Annex B (normative) Cutting schemes . 24 B.1 General . 24 B.2 Representative portions for compressive strength determination 24 B.3 Representative portions for determination of freeze-thaw resistance 25 Annex C (normative) Tolerances on accessory units . 26 C.1 Dimensions of rectangular and non-re
28、ctangular accessory calcium silicate masonry units . 26 C.2 Tolerances for accessory calcium silicate masonry units 28 Annex D (informative) Classification systems . 30 D.1 Classification based on compressive strength 30 D.2 Classification based on gross dry density . 30 Annex E (informative) Guidan
29、ce for test frequencies for designing a FPC system to demonstrate conformity of finished products with the requirements of the standard and the declaration of the manufacturer 32 Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the EU Construction Products Regul
30、ation“ 34 ZA.1 Scope and relevant characteristics . 34 ZA.2 Procedure for AVCP of calcium silicate masonry units 36 ZA.2.1 System(s) of AVCP 36 ZA.2.2 Declaration of performance (DoP) . 38 ZA.3 CE marking and labelling 42 Bibliography 45 BS EN 771-2:2011+A1:2015EN 771-2:2011+A1:2015 (E)EN 771-2:2011
31、+A1:2015 (E) 2 Contents Page European foreword .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Materials and manufacture .8 5 Requirements for calcium silicate masonry units 8 5.1 General 8 5.2 Dimensions and tolerances 9 5.2.1 Dimensions .9 5.2.2 Dimensional tolerances . 10 5.3 C
32、onfiguration 10 5.4 Dry density 11 5.4.1 Gross dry density . 11 5.4.2 Net dry density 11 5.5 Compressive strength 12 5.6 Thermal properties . 12 5.7 Durability . 12 5.8 Water vapour permeability . 13 5.9 Reaction to fire 13 5.10 Water absorption 13 5.11 Moisture movement 13 5.12 Bond strength . 14 5
33、.12.1 General . 14 5.12.2 Declaration based on fixed values 14 5.12.3 Declaration based on tests 14 5.13 Dangerous substances 14 6 !Description, designation, designation code and classification of calcium silicate masonry units“ 14 6.1 Description and designation . 14 6.2 Designation codes 15 6.3 Cl
34、assification . 17 7 Marking 17 8 !Assessment and verification of constancy of performance (AVCP)“ 17 8.1 General . 17 8.2 Product type determination . 17 8.3 Factory production control 18 8.3.1 General . 18 8.3.2 Testing and measuring equipment . 19 8.3.3 Production Equipment . 19 8.3.4 Raw material
35、s 19 8.3.5 Production process 19 8.3.6 Finished product testing 19 8.3.7 Statistical techniques . 19 8.3.8 Marking and stock control of products 20 8.3.9 Traceability 20 8.3.10 Nonconforming products . 20 EN 771-2:2011+A1:2015 (E) 3 Annex A (normative) !Sampling for product type determination tests
36、and for independent testing of consignments“ 21 A.1 General . 21 A.2 Sampling procedure 21 A.2.1 General . 21 A.2.2 Random sampling . 21 A.2.3 Representative sampling 21 A.2.4 Dividing the sample . 22 A.2.5 Number of masonry units required for testing . 22 Annex B (normative) Cutting schemes . 24 B.
37、1 General . 24 B.2 Representative portions for compressive strength determination 24 B.3 Representative portions for determination of freeze-thaw resistance 25 Annex C (normative) Tolerances on accessory units . 26 C.1 Dimensions of rectangular and non-rectangular accessory calcium silicate masonry
38、units . 26 C.2 Tolerances for accessory calcium silicate masonry units 28 Annex D (informative) Classification systems . 30 D.1 Classification based on compressive strength 30 D.2 Classification based on gross dry density . 30 Annex E (informative) Guidance for test frequencies for designing a FPC s
39、ystem to demonstrate conformity of finished products with the requirements of the standard and the declaration of the manufacturer 32 Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation“ 34 ZA.1 Scope and relevant characteris
40、tics . 34 ZA.2 Procedure for AVCP of calcium silicate masonry units 36 ZA.2.1 System(s) of AVCP 36 ZA.2.2 Declaration of performance (DoP) . 38 ZA.3 CE marking and labelling 42 Bibliography 45 BS EN 771-2:2011+A1:2015EN 771-2:2011+A1:2015 (E)EN 771-2:2011+A1:2015 (E) 4 European foreword This documen
41、t (EN 771-2:2011+A1:2015) has been prepared by Technical Committee CEN/TC 125 “Masonry”, 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 February 2016, and
42、 conflicting national standards shall be withdrawn at the latest by May 2017. 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. This doc
43、ument supersedes !EN 771-2:2011“. This document includes Amendment 1 approved by CEN on 2015-01-11. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. This document has been prepared under a mandate given to CEN by the European Commission and the Eur
44、opean Free Trade Association, and supports !the basic requirements for construction works of the EU Construction Products Regulation (Regulation (EU) No 305/2011)“. !For relationship with EU Regulation/Directive(s), see informative Annex ZA, which is an integral part of this document.“ This European
45、 Standard also takes into account the general rules for reinforced and unreinforced masonry in Eurocode 6. EN 771, Specification for masonry units consists of: Part 1: Clay masonry units Part 2: Calcium silicate masonry units Part 3: Aggregate concrete masonry units (Dense and light-weight aggregate
46、s) Part 4: Autoclaved aerated concrete masonry units Part 5: Manufactured stone masonry units Part 6: Natural stone masonry units According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,
47、 Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, S
48、witzerland, Turkey and the United Kingdom. EN 771-2:2011+A1:2015 (E) 5 1 Scope This European Standard specifies the characteristics and performance requirements of calcium silicate masonry units for which the main intended uses are inner walls, outer walls, cellars, foundations and external chimney
49、masonry. This European Standard is intended to apply to all calcium silicate masonry units, including those of an overall nonrectangular parallelepiped shape, specially shaped and accessory units. It defines the performance related to e.g. strength, density and dimensional accuracy, measured according to the corresponding test methods contained in separate European Standards. It provides for the !assessment and verification of constancy of performance (AVCP)“ of the product to this European Standard. The marking requirement for products covered by this documen
