1、BSI Standards PublicationBS EN 771-1:2011Specification for masonry unitsPart 1: Clay masonry unitsBS EN 771-1:2011+A1:2015BS EN 771-1:2011+A1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 771-1:2011+A1:2015. It supersedes BS EN 771-1:2011, which is withdr
2、awn.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 771-1:2011+A1:2015 is a “harmonized” European Standard an
3、d 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 771-1 was the subject of transitional arrangements agreed under the Commission mandate. In the UK, t
4、he corresponding national standards were: BS 3921:1985, Specification for clay bricks; BS 6649:1985, Specification for clay and calcium silicate modular bricks;which were withdrawn in 2007.The UK participation in its preparation was entrusted by Technical Committee B/519, Masonry and associated test
5、ing, to Subcommittee B/519/1, Masonry units.A list of organizations represented on this committee can be obtained on request to its secretary.EN 771-1 specifies the characteristics and performance requirements for clay masonry units available throughout the CEN member countries. It aims to do so in
6、product performance terms, avoiding as far as possible prescriptive requirements but permitting all the traditional designations of clay units available throughout Europe. The Standard distinguishes between clay masonry units for use in protected masonry (P units) and unprotected masonry (U units).
7、The majority of clay bricks produced in the UK are U units. One particular variety widely available in the UK (in two classes) is the clay engineering brick; its characteristics are defined in terms of compressive strength, water absorption and net dry density that are tabulated later in the accompa
8、nying National Annex to this standard.The UK National Annex NA attached to this standard provides an informative commentary on the differences between EN 771-1, BS 3921 and BS 6649.Masonry units conforming to this standard need to be CE marked in accordance with the procedures in Annex ZA. The signi
9、ficance 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 basic requirements for construction works given in the EU Construction Products Regulation. Not all product charact
10、eristics need necessarily be given on the CE marking, but those product characteristics covered by regulations in force in each EU Member State, where the manufacturer intends that the product will be used, do need to be stated.It cannot be assumed that the declared value of a performance characteri
11、stic 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.BS EN 771-1:2011+A1:2015BRITISH STANDARD The British Standards Institution 2016. Published by BSI Standards Limited
12、 2016ISBN 978 0 580 79491 9ICS 91.100.25This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published unde
13、r the authority of the Standards Policy and Strategy Committee on 31 October 2011.Amendments/corrigenda issued since publicationDate Text affected31 March 2016 Implementation of CEN amendment 1:2015. National Foreword and National Annex NA also updatedThis page deliberately left blankEUROPEAN STANDA
14、RD NORME EUROPENNE EUROPISCHE NORM EN 771-1:2011+A1 August 2015 ICS 91.100.25 Supersedes EN 771-1:2011English Version Specification for masonry units - Part 1: Clay masonry units Spcification pour lments de maonnerie - Partie 1: Briques de terre cuite Festlegungen fr Mauersteine - Teil 1: Mauerziege
15、l This European Standard was approved by CEN on 3 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 Standard the status of a national standard witho
16、ut 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, French, German). A version in any other l
17、anguage 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, Bulgaria, Croatia, Cyprus, Czech Republic, Den
18、mark, 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, Turkey and United Kingdom. EUROPEAN COMMITTE
19、E 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. Ref. No. EN 771-1:2011+A1:2015 EEN 771-1:
20、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 .9 5 Requirements for clay masonry units 10 5.1 General . 10 5.2 !P units: intended to be used in protected masonry“ . 10 5.2.1 Dimensions and tolerances (!
21、P“ units) . 10 5.2.2 Configuration (!P“ units) 13 5.2.3 Density (!P“ units) . 14 5.2.4 Compressive strength (!P“ units) 15 5.2.5 Thermal properties (!P“ units) . 16 5.2.6 Durability (!P“ units) . 16 5.2.7 Water absorption (!P“ units) 16 5.2.8 Active soluble salts content (!P“ units) 16 5.2.9 Moistur
22、e movement (!P“ units) 16 5.2.10 Reaction to fire (!P“ units) . 17 5.2.11 Water vapour permeability (!P“ units) 17 5.2.12 Bond strength (!P“ units) . 17 5.2.13 Dangerous substances 17 5.3 !U units: intended to be used in unprotected masonry“ 18 5.3.1 Dimensions and tolerances (!U“ units). 18 5.3.2 C
23、onfiguration (!U“ units) 19 5.3.3 Density (!U“ units) . 20 5.3.4 Compressive strength (!U“ units) . 21 5.3.5 Thermal properties (!U“ units) . 22 5.3.6 Durability (!U“ units) . 22 5.3.7 Water absorption (!U“ units) 22 5.3.8 Initial rate of water absorption (!U“ units) 23 5.3.9 Active soluble salts co
24、ntent (!U“ units) 23 5.3.10 Moisture movement (!U“ units) . 23 5.3.11 Reaction to fire (!U“ units) . 23 5.3.12 Water vapour permeability (!U“ units) 23 5.3.13 Bond strength (!U“ units) . 24 5.3.14 Dangerous substances 24 6 !Description, designation, designation code and classification of clay masonr
25、y units“ 24 6.1 Description and designation . 24 6.1.1 !P units“ . 24 6.1.2 !U units“ . 25 6.2 Designation code 26 6.3 Classification . 30 7 Marking 30 8 !Assessment and verification of constancy of performance (AVCP)“ 30 8.1 General . 30 8.2 !Product type determination“ 30 8.3 Factory production co
26、ntrol 31 EN 771-1:2011+A1:2015 (E) 3 8.3.1 General . 31 8.3.2 Testing and measuring equipment 32 8.3.3 Production equipment 32 8.3.4 Raw materials 32 8.3.5 Production process . 32 8.3.6 Finished product testing . 32 8.3.7 Statistical techniques 33 8.3.8 Marking and stock control of products . 33 8.3
27、.9 Traceability . 33 8.3.10 Nonconforming products . 33 Annex A (normative) !Sampling for product type determination tests and for independent testing of consignments“ 34 A.1 General . 34 A.2 Sampling procedure 34 A.2.1 General . 34 A.2.2 Random sampling . 34 A.2.3 Representative sampling 34 A.2.4 D
28、ividing the sample . 35 A.2.5 Number of units required for testing . 36 Annex B (informative) Additional information 38 B.1 Use of clay masonry units 38 B.2 Durability 39 B.3 Freeze/thaw resistance . 39 B.3.1 General . 39 B.3.2 Masonry subjected to severe exposure 39 B.3.3 Masonry subjected to moder
29、ate exposure . 40 B.3.4 Masonry subjected to passive exposure 40 B.4 Sulfate action on mortars and plasters . 40 B.5 Efflorescence and staining . 41 B.6 General guidance on the appearance of facing clay masonry units . 41 Annex C (informative) Guidelines for test frequencies for designing a FPC syst
30、em to demonstrate conformity of finished products with the requirements of the standard and the declaration of the manufacturer 42 Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation“ 44 ZA.1 Scope and relevant characteristic
31、s . 44 ZA.2 Procedure for AVCP of clay masonry units 47 ZA.2.1 System(s) of AVCP 47 ZA.2.2 Declaration of performance (DoP) . 48 ZA.3 CE marking and labelling 54 Bibliography 57 BS EN 771-1:2011+A1:2015EN 771-1:2011+A1:2015 (E)EN 771-1:2011+A1:2015 (E) 2 Contents Page European foreword .4 1 Scope 5
32、2 Normative references 5 3 Terms and definitions .6 4 Materials and manufacture .9 5 Requirements for clay masonry units 10 5.1 General . 10 5.2 !P units: intended to be used in protected masonry“ . 10 5.2.1 Dimensions and tolerances (!P“ units) . 10 5.2.2 Configuration (!P“ units) 13 5.2.3 Density
33、(!P“ units) . 14 5.2.4 Compressive strength (!P“ units) 15 5.2.5 Thermal properties (!P“ units) . 16 5.2.6 Durability (!P“ units) . 16 5.2.7 Water absorption (!P“ units) 16 5.2.8 Active soluble salts content (!P“ units) 16 5.2.9 Moisture movement (!P“ units) 16 5.2.10 Reaction to fire (!P“ units) .
34、17 5.2.11 Water vapour permeability (!P“ units) 17 5.2.12 Bond strength (!P“ units) . 17 5.2.13 Dangerous substances 17 5.3 !U units: intended to be used in unprotected masonry“ 18 5.3.1 Dimensions and tolerances (!U“ units). 18 5.3.2 Configuration (!U“ units) 19 5.3.3 Density (!U“ units) . 20 5.3.4
35、 Compressive strength (!U“ units) . 21 5.3.5 Thermal properties (!U“ units) . 22 5.3.6 Durability (!U“ units) . 22 5.3.7 Water absorption (!U“ units) 22 5.3.8 Initial rate of water absorption (!U“ units) 23 5.3.9 Active soluble salts content (!U“ units) 23 5.3.10 Moisture movement (!U“ units) . 23 5
36、.3.11 Reaction to fire (!U“ units) . 23 5.3.12 Water vapour permeability (!U“ units) 23 5.3.13 Bond strength (!U“ units) . 24 5.3.14 Dangerous substances 24 6 !Description, designation, designation code and classification of clay masonry units“ 24 6.1 Description and designation . 24 6.1.1 !P units“
37、 . 24 6.1.2 !U units“ . 25 6.2 Designation code 26 6.3 Classification . 30 7 Marking 30 8 !Assessment and verification of constancy of performance (AVCP)“ 30 8.1 General . 30 8.2 !Product type determination“ 30 8.3 Factory production control 31 EN 771-1:2011+A1:2015 (E) 3 8.3.1 General . 31 8.3.2 Te
38、sting and measuring equipment 32 8.3.3 Production equipment 32 8.3.4 Raw materials 32 8.3.5 Production process . 32 8.3.6 Finished product testing . 32 8.3.7 Statistical techniques 33 8.3.8 Marking and stock control of products . 33 8.3.9 Traceability . 33 8.3.10 Nonconforming products . 33 Annex A
39、(normative) !Sampling for product type determination tests and for independent testing of consignments“ 34 A.1 General . 34 A.2 Sampling procedure 34 A.2.1 General . 34 A.2.2 Random sampling . 34 A.2.3 Representative sampling 34 A.2.4 Dividing the sample . 35 A.2.5 Number of units required for testi
40、ng . 36 Annex B (informative) Additional information 38 B.1 Use of clay masonry units 38 B.2 Durability 39 B.3 Freeze/thaw resistance . 39 B.3.1 General . 39 B.3.2 Masonry subjected to severe exposure 39 B.3.3 Masonry subjected to moderate exposure . 40 B.3.4 Masonry subjected to passive exposure 40
41、 B.4 Sulfate action on mortars and plasters . 40 B.5 Efflorescence and staining . 41 B.6 General guidance on the appearance of facing clay masonry units . 41 Annex C (informative) Guidelines for test frequencies for designing a FPC system to demonstrate conformity of finished products with the requi
42、rements of the standard and the declaration of the manufacturer 42 Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation“ 44 ZA.1 Scope and relevant characteristics . 44 ZA.2 Procedure for AVCP of clay masonry units 47 ZA.2.1 S
43、ystem(s) of AVCP 47 ZA.2.2 Declaration of performance (DoP) . 48 ZA.3 CE marking and labelling 54 Bibliography 57 BS EN 771-1:2011+A1:2015EN 771-1:2011+A1:2015 (E)EN 771-1:2011+A1:2015 (E) 4 European foreword This document (EN 771-1:2011+A1:2015) has been prepared by Technical Committee CEN/TC 125 “
44、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 conflicting national standards shall be withdrawn at the latest by May 2017. A
45、ttention 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 document supersedes !EN 771-1:2011“. This document includes Amendment 1 approved b
46、y 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 European Free Trade Association, and supports basic requirements for construction
47、 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 Standard also takes into account the general rules for unreinforced and reinforced m
48、asonry 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 aggregates) Part 4: Autoclaved aerated concrete masonry units Part 5: Manufactured stone mason
49、ry 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, 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, Switzerland, Turkey and the United Kingdom. EN 771-1:2
