1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12859:2011Gypsum blocks Definitions,requirements and test methodsBS EN 12859:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1285
2、9:2011. Itsupersedes BS EN 12859:2008 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/544/1, Gypsum plasters, cast gypsum and ancillaries.A list of organizations represented on this committee can beobtained on request to its secretary.This publication
3、 does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 71036 0ICS 91.100.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority
4、 of theStandards Policy and Strategy Committee on 30 April 2011.Amendments issued since publicationDate Text affectedBS EN 12859:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12859 February 2011 ICS 91.100.10 Supersedes EN 12859:2008English Version Gypsum blocks - Definitions, requirement
5、s and test methods Carreaux de pltre - Dfinitions, spcifications et mthodes dessai Gips-Wandbauplatten - Begriffe, Anforderungen und Prfverfahren This European Standard was approved by CEN on 2 January 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate th
6、e 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
7、 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 nationa
8、l standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerlan
9、d and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12
10、859:2011: EBS EN 12859:2011EN 12859:2011 (E) 2 Contents Page Foreword 4Introduction .51 Scope 62 Normative references 63 Terms, definitions and symbols .73.1 Terms and definitions .73.2 Symbols 94 Requirements 104.1 Fire behaviour . 104.1.1 Reaction to fire 104.1.2 Fire resistance . 104.2 Direct air
11、borne sound insulation 104.3 Thermal properties . 104.3.1 Thermal resistance . 104.3.2 Thermal conductivity 104.4 Types of gypsum blocks 114.4.1 General . 114.4.2 Visual identification of gypsum blocks by pigmentation . 114.5 Release of dangerous substances 124.6 Dimensions and tolerances . 124.6.1
12、Dimensions 124.6.2 Tolerances . 124.7 Flatness of gypsum blocks 134.8 Dry density and tolerance 134.8.1 Classes of density 134.8.2 Tolerance . 134.9 Surface mass of gypsum blocks and tolerance 134.10 Bending strength 134.11 Moisture content . 144.12 pH . 154.13 Water absorption capacity . 154.13.1 C
13、lassification . 154.13.2 Requirement 154.14 Surface hardness 155 Test methods . 155.1 Sampling 155.2 Preparation of test pieces 155.3 Measurement of dimensions . 165.3.1 Thickness 165.3.2 Length 165.3.3 Height . 185.3.4 Cavity gypsum blocks 185.4 Flatness of gypsum blocks 195.4.1 Principle . 195.4.2
14、 Apparatus 195.4.3 Procedure 195.4.4 Expression of results . 195.5 Mass of gypsum blocks . 195.5.1 Principle . 195.5.2 Apparatus 195.5.3 Procedure 19BS EN 12859:2011EN 12859:2011 (E) 3 5.5.4 Expression of results 195.6 Density of gypsum blocks 195.6.1 Principle 195.6.2 Apparatus . 195.6.3 Procedure
15、. 205.6.4 Expression of results 205.7 Bending strength . 205.7.1 Principle 205.7.2 Apparatus . 205.7.3 Procedure . 215.7.4 Expression of results 215.8 Moisture content 215.8.1 Principle 215.8.2 Expression of results 215.9 Water absorption capacity (hydrophobic gypsum blocks only) 225.9.1 Principle 2
16、25.9.2 Apparatus . 225.9.3 Preparation of the test pieces 225.9.4 Procedure . 225.9.5 Expression of results 225.10 pH measurement . 225.10.1 Principle 225.10.2 Apparatus . 225.10.3 Sampling. 235.10.4 Procedure . 235.10.5 Expression of results 235.11 Test reports 236 Evaluation of conformity 236.1 Ge
17、neral . 236.2 Initial type testing 236.3 Factory production control. 247 Designation of gypsum blocks 248 Marking, labelling and packaging 25Annex A (normative) Sampling for independent acceptance testing carried out by a third party . 26A.1 General . 26A.2 Sampling procedure 26Annex B (informative)
18、 Surface hardness 28B.1 General . 28B.2 Requirements . 28B.3 Test method . 28Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 30ZA.1 Scope and relevant characteristics . 30ZA.2 Procedure for attestation of conformity of gy
19、psum blocks 31ZA.3 CE Marking and labelling 32Bibliography 35BS EN 12859:2011EN 12859:2011 (E) 4 Foreword This document (EN 12859:2011) has been prepared by Technical Committee CEN/TC 241 “Gypsum and gypsum based products”, the secretariat of which is held by AFNOR. This European Standard shall be g
20、iven the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2011, and conflicting national standards shall be withdrawn at the latest by August 2011. Attention is drawn to the possibility that some of the elements of this document may
21、 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 12859:2008. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, a
22、nd supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This European Standard includes: A normative annex concerning sampling for independent test; An informative annex recommending requireme
23、nts and test method for measuring surface hardness. 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
24、, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 12859:2011EN 12859:2011 (E) 5 Introduction Diagram 1 shows the relationship betw
25、een this standard and the package of standards prepared to support the family of gypsum products. Figure 1 Family of gypsum binders and gypsum products BS EN 12859:2011EN 12859:2011 (E) 6 1 Scope This European Standard specifies the characteristics and performance of gypsum blocks with smooth faces
26、for which the main intended uses are construction of non-load bearing partitions or independent wall linings and the fire protection of columns, lift shafts, shafts for services, etc. Gypsum blocks are not used to build ceilings. It covers the following performance characteristics related to the ess
27、ential requirements: reaction to fire; resistance to fire; direct airborne sound insulation; release of dangerous substances; to be measured according to the corresponding European test methods, as well as: thermal resistance to be calculated from the thermal conductivity values given in 4.3.2. It d
28、escribes the reference tests for technical specifications. This European Standard covers also additional technical characteristics that are of importance for the use and acceptance of the product by the construction industry: convenience classes for density; convenience classes for pH. It provides f
29、or the evaluation of conformity of the product to this European Standard. This European Standard does not cover gypsum blocks of thickness less than 50 mm or gypsum storey height units. 2 Normative references The following referenced documents are indispensable for the application of this document.
30、For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13501-1, Fire classification of construction products and building elements Part 1: Classification using data from reaction to fire tests
31、 EN 13501-2, Fire classification of construction products and building elements Part 2: Classification using data from fire resistance tests, excluding ventilation services EN ISO 717-1, Acoustics Rating of sound insulation in buildings and of building elements Part 1: Airborne sound insulation (ISO
32、 717-1:1996)1)1) This reference is impacted by the stand-alone amendment EN ISO 717-1:1996/A1:2006. BS EN 12859:2011EN 12859:2011 (E) 7 EN ISO 6946:2007, Building components and building elements Thermal resistance and thermal transmittance Calculation method (ISO 6946:2007) EN ISO 10140-3, Acoustic
33、s Laboratory measurement of sound insulation of building elements Part 3: Measurement of impact sound insulation (ISO 10140-3:2010) EN ISO 10456:2007, Building materials and products Hygrothermal properties Tabulated design values and procedures for determining declared and design thermal values (IS
34、O 10456:2007) 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 gypsum block factory-made building element that is produced from calcium sulphate and water, that may incorporate fibres, fillers, aggregates a
35、nd other additives as far as they are not classified as dangerous substances in accordance with European regulations, and that may be coloured by pigmentation in accordance with the provisions of this standard NOTE The gypsum block is a rectangular parallelepiped with tongues and grooves on at least
36、 two of their opposite edges. 3.1.2 solid gypsum block gypsum block manufactured without cavities 3.1.3 cavity gypsum block gypsum block which incorporates preformed cavities 3.1.4 preformed cavity formed cavity parallel to the faces which may or may not pass completely through the block and which m
37、ay run parallel with the height or the length NOTE See example on Figure 2. 3.1.5 face plain and smooth surface intended to provide the finish of a partition NOTE See Figure 2. 3.1.6 edge extreme side of the gypsum block having tongues and grooves NOTE See Figure 2. 3.1.7 thickness distance between
38、the two faces of a gypsum block NOTE See Figure 2. BS EN 12859:2011EN 12859:2011 (E) 8 3.1.8 length greatest distance between two edges of a gypsum block NOTE See Figure 2. 3.1.9 height smaller distance between two edges of a gypsum block NOTE See Figure 2. BS EN 12859:2011EN 12859:2011 (E) 9 Key 1
39、Preformed cavities 2 Face 3 Thickness 4 Height 5 Length Figure 2 Gypsum block 3.2 Symbols For the purposes of this document, the following symbols apply: gross dry density, in kilograms per cubic metre (kg/m3) thermal conductivity, in Watts per metre per Kelvin (W/mK) BS EN 12859:2011EN 12859:2011 (
40、E) 10 23-50thermal conductivity of the hardened plaster when in equilibrium at 23 C and 50 % relative humidity, in Watts per metre per Kelvin (W/mK) M mass of the gypsum block in kilograms (kg) R2F reaction to fire FR fire resistance R direct airborne sound insulation 4 Requirements 4.1 Fire behavio
41、ur 4.1.1 Reaction to fire Gypsum blocks are classified in Euroclass A.1 (no contribution to fire) without testing when they contain less than 1 % by weight or volume (whichever is the more onerous) of organic material. Gypsum blocks with 1 % or more, by weight or volume of organic material, shall be
42、 tested and classified in accordance with EN 13501-1. 4.1.2 Fire resistance Resistance to fire is a property of an assembled system and not of the product itself. When relevant, the fire resistance of a system including gypsum blocks assembled with adhesive for gypsum blocks shall be determined and
43、classified in accordance with EN 13501-2. 4.2 Direct airborne sound insulation Direct airborne sound insulation is a property of an assembled system and not of the product itself. When relevant, the direct airborne sound insulation of a system including gypsum blocks assembled with adhesive for gyps
44、um blocks shall be determined in accordance with EN ISO 10140-3 and EN ISO 717-1. 4.3 Thermal properties 4.3.1 Thermal resistance When the intended use of gypsum blocks is to contribute to thermal resistance in building construction works, the thermal resistance is calculated using the formula given
45、 in EN ISO 6946:2007. The values of thermal conductivity necessary for this calculation are given in 4.3.2 and thickness values to be used shall be measured according to 5.3.1. 4.3.2 Thermal conductivity Design values of the thermal conductivity of hardened gypsum plaster used in the manufacture of
46、gypsum blocks are given in Table 1. BS EN 12859:2011EN 12859:2011 (E) 11 Table 1 Design values of thermal conductivity of gypsum plaster 23-50kg/m3W/(m.K) 600 0,18700 0,22800 0,26 900 0,301 000 0,34 1 100 0,39 1 200 0,43 1 300 0,47 1 400 0,51 1 500 0,56 The values given in Table 1 are taken from EN
47、ISO 10456:2007. Design values concern dry material used inside. When the material is wet, adjust these values using EN ISO 10456. 4.4 Types of gypsum blocks 4.4.1 General Gypsum blocks are manufactured in two types of strength class A and R (see 4.10). Gypsum blocks are manufactured in three types o
48、f density Low, Medium and Dense (see 4.8). Gypsum blocks are manufactured in three classes of water absorption H1, H2 and H3 (See 4.13). 4.4.2 Visual identification of gypsum blocks by pigmentation 4.4.2.1 General Visual identification of the different types of gypsum blocks follows the two driteria: density; water absorption. 4.4.2.2 Pigmentation of gypsum blocks following density classes Gypsum blocks are manufactured in three classes of den
