EN 771-4:2011+A1:2015

Specification for masonry units - Part 4: Autoclaved aerated concrete masonry units

This European Standard specifies the characteristics and performance requirements of autoclaved aerated concrete (AAC) masonry units for which the main intended uses are different types of load bearing and non-load bearing applications in all forms of walling including single leaf, cavity, partitions, retaining, basement and general use below ground level, including walling for fire protection, thermal insulation, sound insulation and the fabric of chimneys (excluding chimney flue units).
This European Standard includes AAC masonry units with an incorporated insulation not exposed to fire, and masonry units of an overall rectangular parallelepiped shape, specially shaped and accessory units. AAC masonry units may consist of layers of different densities where not all of the layers are loadbearing.
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 European Standard is included.
This European Standard does not cover the requirements for storey height panels, flue linings and masonry units with an incorporated thermal insulation material bonded to the faces of the unit susceptible to be exposed to fire. It does not specify standard sizes for autoclaved aerated concrete units nor standard work dimensions and angles of specially shaped and accessory units. It does not give permissible deviations for specially shaped and accessory units. It does not cover products intended for use as a damp proof course or the lining of a chimney.

Festlegungen für Mauersteine - Teil 4: Porenbetonsteine

Spécifications pour éléments de maçonnerie - Partie 4: Éléments de maçonnerie en béton cellulaire autoclavé

Specifikacija za zidake - 4. del: Zidaki iz avtoklaviranega celičnega betona

Ta evropski standard določa značilnosti in zahteve za zmogljivosti za zidake iz avtoklaviranega celičnega betona, ki so predvideni predvsem za uporabo pri raznovrstnih nosilnih in nenosilnih aplikacijah pri vseh oblikah sten, vključno z enoslojnim zidom, votlim zidom, predelki, opornimi stenami, kletmi in splošno uporabo pod zemljo, ki vključuje stene za zaščito pred požarom, toplotno izolacijo, zvočno izolacijo in strukturo dimnikov (razen dimnih cevi).
Ta evropski standard vključuje zidake iz avtoklaviranega celičnega betona z vgrajeno toplotno izolacijo, ki ne bo izpostavljena ognju, ter zidake nepravokotne paralelepipedne oblike, zidake posebnih oblik in pomožne zidake. Zidaki iz avtoklaviranega celičnega betona so lahko sestavljeni iz plasti različnih gostot, pri čemer vse plasti niso nosilne.
Omogoča ocenjevanje in preverjanje nespremenljivosti zmogljivosti (AVCP) proizvodov v skladu s tem evropskim standardom.
Vključena je zahteva za označevanje proizvodov, ki jih zajema ta evropski standard.
Ta evropski standard ne zajema zahtev za panele etažne višine, obloge dimnih cevi in zidake z vgrajenim materialom za toplotno izolacijo, vezanim na stranice zidaka, ki so lahko izpostavljene ognju. Ne določa standardnih velikosti za zidake iz avtoklaviranega celičnega betona niti ne določa standardnih delovnih dimenzij in kotov zidakov posebnih oblik in pomožnih zidakov. Ne podaja dovoljenih odstopanj za zidake posebnih oblik in pomožne zidake. Ne zajema proizvodov, ki se uporabljajo kot izolacijska zaščita pred vlago ali obloga dimnika.

General Information

• Status: Published
• Publication Date: 18-Aug-2015
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: CEN/TC 125 - Masonry
• Drafting Committee: CEN/TC 125/WG 1 - Masonry units
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 15-Mar-2022
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/116 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on masonry and related products
• Ref Project: SIST EN 771-4:2011+A1:2015 - Specification for masonry units - Part 4: Autoclaved aerated concrete masonry units

Relations

• Merged From: EN 771-4:2011 - Specification for masonry units - Part 4: Autoclaved aerated concrete masonry units
• Effective Date: 19-Jan-2023
• Merged From: EN 771-4:2011/FprA1 - Specification for masonry units - Part 4: Autoclaved aerated concrete masonry units
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2015
1DGRPHãþD
SIST EN 771-4:2011
6SHFLILNDFLMD]D]LGDNHGHO=LGDNLL]DYWRNODYLUDQHJDFHOLþQHJDEHWRQD
Specification for masonry units - Part 4: Autoclaved aerated concrete masonry units
Festlegungen für Mauersteine - Teil 4: Porenbetonsteine
Spécifications pour éléments de maçonnerie - Partie 4: Éléments de maçonnerie en
béton cellulaire autoclavé
Ta slovenski standard je istoveten z: EN 771-4:2011+A1:2015
ICS:
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 771-4:2011+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2015
ICS 91.100.30 Supersedes EN 771-4:2011
English Version
Specification for masonry units - Part 4: Autoclaved aerated
concrete masonry units
Spécifications pour éléments de maçonnerie - Partie 4: Festlegungen für Mauersteine - Teil 4: Porenbetonsteine
Éléments de maçonnerie en béton cellulaire autoclavé
This European Standard was approved by CEN on 17 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 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, 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, 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 United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR 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 Ref. No. EN 771-4:2011+A1:2015 E
worldwide for CEN national Members.

Contents Page
European foreword .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Materials and manufacture .8
4.1 General .8
4.2 Materials of manufacture .8
5 Requirements for AAC masonry units .8
5.1 General .8
5.2 Dimensions and tolerances .8
5.2.1 Dimensions .8
5.2.2 Tolerances .9
5.3 Configuration . 10
5.4 Density . 11
5.4.1 Gross dry density . 11
5.4.2 Net dry density . 11
5.4.3 Limit deviations . 12
5.5 Compressive strength . 12
5.6 Thermal properties . 12
5.7 Durability . 12
5.8 Moisture movement . 13
5.9 Water vapour permeability . 13
5.10 Water absorption . 13
5.11 Reaction to fire . 13
5.12 Shear bond strength . 13
5.12.1 General . 13
5.12.2 Declaration based on fixed values . 14
5.12.3 Declaration based on tests . 14
5.13 Flexural bond strength . 14
5.14 Dangerous substances . 14
6 Description, designation and classification of AAC masonry units . 14
6.1 Description and designation . 14
6.2 Classification . 15
7 Marking . 15
8 !Assessment and verification of constancy of performance (AVCP)" . 15
8.1 General . 15
8.2 Product type determination . 16
8.3 Factory production control . 17
8.3.1 General . 17
8.3.2 Testing and measuring equipment . 17
8.3.3 Production equipment . 17
8.3.4 Raw materials . 17
8.3.5 Production process . 17
8.3.6 Finished product testing . 18
8.3.7 Statistical techniques . 18
8.3.8 Marking and stock control of products . 18
8.3.9 Traceability . 18
8.3.10 Nonconforming products . 18
Annex A (normative) !Sampling for product type determination test and for independent

testing of consignments" . 19
A.1 General . 19
A.2 Sampling procedure for an assessment of product compliance . 19
A.2.1 Random sampling . 19
A.2.2 Representative sampling . 19
A.2.3 Dividing the sample . 20
A.2.4 Number of masonry units required for testing . 20
Annex B (normative) Cutting schemes . 21
B.1 Cutting scheme for producing cubes or prisms from AAC masonry units in order to

determine the dry density . 21
B.2 Cutting scheme for producing cubes from AAC masonry units in order to determine

compressive strength . 22
Annex C (informative) Guidance on FPC frequencies. 23
Annex ZA (informative) !Clauses of this European Standard addressing the provisions of the

EU Construction Products Regulation" . 25
ZA.1 Scope and relevant characteristics . 25
ZA.2 Procedure(s) for AVCP of Autoclaved Aerated Concrete masonry units . 26
ZA.2.1 System(s) of AVCP . 26
ZA.2.2 Declaration of performance (DoP) . 28
ZA.3 CE marking and labelling. 32
Bibliography . 35

European foreword
This document (EN 771-4:2011+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 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 document supersedes !EN 771-4:2011".
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
European Free Trade Association and supports 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 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 agg
...