1、BRITISH STANDARDBS EN 14496:2005Gypsum based adhesives for thermal/acoustic insulation composite panels and plasterboards Definitions, requirements and test methodsThe European Standard EN 14496:2005 has the status of a British StandardICS 91.100.10; 91.120.10; 91.120.20g49g50g3g38g50g51g60g44g49g42
2、g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 14496:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 14 Dece
3、mber 2005 BSI 14 December 2005ISBN 0 580 46924 7National forewordThis British Standard is the official English language version of EN 14496:2005. The UK participation in its preparation was entrusted by Technical Committee B/544, Plastering, rendering, dry lining, to Subcommittee B/544/2, Gypsum bas
4、ed boards and ancillaries, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European devel
5、opments and promulgate them in the UK.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under
6、 the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applic
7、ation.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 24, an inside back cover and a back cover.The BSI copyright notice displayed in this document
8、 indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14496November 2005ICS 91.100.10; 91.120.10; 91.120.20English VersionGypsum based adhesives for thermal/acoustic insulationcomposite panels and plast
9、erboards - Definitions, requirementsand test methodsAdhsifs base de pltre pour complexes disolationthermique/acoustique en plaques de pltre et isolant -Dfinitions, spcifications et mthodes dessaiKleber auf Gipsbasis fr Verbundplatten zur Wrme- undSchalldmmung und Gipsplatten - Begriffe, Anforderunge
10、nund PrfverfahrenThis European Standard was approved by CEN on 16 September 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bi
11、bliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of
12、 a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latv
13、ia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN
14、All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14496:2005: EEN 14496:2005 (E) 2 Contents page Foreword4 Introduction .5 1 Scope 7 2 Normative references 7 3 Requirements.7 3.1 Fire behaviour 7 3.1.1 Reaction to fire.7 3.1.2 Fire resista
15、nce7 3.2 Bond strength 8 3.3 Dangerous substances .8 3.4 Calcium sulfate content 8 3.5 End of utilisation time .8 4 Test methods8 4.1 General8 4.2 Determination of the calcium sulfate content.8 4.3 Determination of the water/adhesive ratio 8 4.4 Preparation of the paste for the tests8 4.5 Determinat
16、ion of the end of utilisation time .8 4.5.1 Principle8 4.5.2 Apparatus .9 4.5.3 Procedure .9 4.5.4 Expression of results 9 4.6 Determination of the bond strength.9 4.6.1 Principle9 4.6.2 Apparatus .10 4.6.3 Procedure .12 4.6.4 Expressions of results 13 5 Evaluation of conformity.13 5.1 General13 5.2
17、 Type testing13 5.2.1 General13 5.2.2 Initial type testing 13 5.2.3 Further type testing .14 5.3 Factory production control.14 5.3.1 General14 5.3.2 Personnel14 5.3.3 Equipment 14 5.3.4 Raw materials and components.14 5.3.5 Product testing and evaluation 15 5.3.6 Traceability and marking 15 5.3.7 No
18、n-conforming products 15 5.3.8 Corrective action15 5.3.9 Other test methods15 6 Designation 15 7 Marking, labelling and packaging 15 Annex A (informative) Sampling procedure for testing.17 A.1 General 17 A.2 Sampling procedure.17 EN 14496:2005 (E) 3 A.2.1 General17 A.2.2 Random sampling17 A.2.3 Repr
19、esentative sampling 17 Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU construction Products Directive 19 ZA.1 Scope and relevant characteristics .19 ZA.2 Attestation and declaration of conformity of products .20 ZA.3 CE marking and labelling22 Bibliograp
20、hy24 EN 14496:2005 (E) 4 Foreword This European Standard (EN 14496:2005) 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 given the status of a national standard, either by publication o
21、f an identical text or by endorsement, at the latest by May 2006, and conflicting national standards shall be withdrawn at the latest by August 2007. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essentia
22、l requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Stan
23、dard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14496:2005 (E) 5 In
24、troduction Diagrams 1 and 2 show the relationship between this standard and the package of standards prepared to support the family of gypsum and ancillary products. Diagram 1 Family of gypsum products EN 14496:2005 (E) 6 Diagram 2 Family of ancillary products for use with gypsum products EN 14496:2
25、005 (E) 7 1 Scope This European standard specifies the characteristics and performances of gypsum based adhesives which are composed of gypsum plasters defined in EN 13279-1 and of additives. These adhesives are used for fixing to walls and partitions, gypsum plasterboard thermal/acoustic insulation
26、 composite panels according to EN 13950, gypsum plasterboard linings according to EN 520 and other suitable products as reprocessed boards according to EN 14190 and cornices according to EN 14209. They assist in the construction of systems which provide thermal and acoustic performance. It covers th
27、e following performance characteristics: reaction to fire, fire resistance and bond strength to be measured according to the corresponding European test methods. It provides for the evaluation of conformity of the product to this standard. This standard covers also additional technical characteristi
28、cs that are of importance for the use and acceptance of the product by the construction Industry and the reference tests for these characteristics. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition
29、 cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 196-1:1994, Methods of testing cement Determination of strength EN 13279-2:2004, Gypsum and gypsum plasters Part 2 : Test methods EN 13501-1, Fire classification of constructi
30、on products and building elements Part 1 : Classification using test data from reaction to fire tests EN 13501-2, Fire classification of construction products and building elements Part 2 : Classification using data from fire resistance tests, excluding ventilation services EN 13823, Reaction to fir
31、e tests for building products Building products excluding floorings exposed to the thermal attack by a single burning item 3 Requirements 3.1 Fire behaviour 3.1.1 Reaction to fire Gypsum building plaster is the main component of gypsum based adhesives. Therefore, gypsum based adhesives are classifie
32、d 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 (Commission Decision 96/603/EEC as amended). If they contain 1 % or more by weight or volume of organic material, they shall be determined and class
33、ified in accordance with EN 13501-1. When testing in EN 13823 is required, gypsum based adhesives shall be tested in their end use conditions. 3.1.2 Fire resistance NOTE Resistance to fire is a characteristic dependant on an assembled system and not of the product in isolation. EN 14496:2005 (E) 8 W
34、hen required, the fire resistance of a system including gypsum based adhesives for thermal/acoustic insulation composite panels shall be determined and classified according to EN 13501-2. 3.2 Bond strength The bond strength of the adhesive determined as described in 4.6 shall not be less than 0,06 M
35、Pa. 3.3 Dangerous substances Materials used in products shall not release any dangerous substances in excess of the maximum permitted levels specified in a relevant European Standard for the material or permitted in the national regulations of the member state of destination. 3.4 Calcium sulfate con
36、tent The calcium sulfate content of the powder as a percentage by mass of the product shall not be less than 30 % when calculated from the result of the test carried out in accordance with 4.2 of EN 13279-2:2004. 3.5 End of utilisation time The end of utilisation time is determined as described in 4
37、.5 shall be greater than the time declared by the producer. 4 Test methods 4.1 General This standard describes the specific test methods for gypsum based adhesives for thermal/acoustic insulation composite panels and plasterboards. General conditions of tests as well as test method which are common
38、to gypsum plaster and gypsum based adhesives are described in EN 13279-2. Those test methods which enable the requirements of this European Standard to be evaluated are given below; test methods for other properties, for examples particle size, may be used by agreement. 4.2 Determination of the calc
39、ium sulfate content Test method is described in 4.2 of EN 13279-2:2004. 4.3 Determination of the water/adhesive ratio Test method is described in 4.3.2 of EN 13279-2:2004. 4.4 Preparation of the paste for the tests The paste used for the tests and for the preparation of test pieces is prepared as de
40、scribed in 4.3.2 of EN 13279-2:2004. 4.5 Determination of the end of utilisation time 4.5.1 Principle The depth of penetration of the conical penetrator (cone) into a gypsum based adhesive/water paste as the set progresses shall be measured. EN 14496:2005 (E) 9 4.5.2 Apparatus a) Vicat apparatus: se
41、e EN 13279-2:2004, Figures 1 and 2; b) conical penetrator (cone): see EN 13279-2:2004, Figure 3; c) glass plate : about 150 mm long and 150 mm wide; d) Vicat ring : see EN 13279-2:2004, item b) in 4.3.2.2; e) straight edge :140 mm length; f) chronometer; g) mixer and paddle: see 4.4 of EN 196-1:1994
42、 (description in Annex A). 4.5.3 Procedure The Vicat ring shall be placed on the glass plate with the larger opening in contact with the glass plate. The gypsum based adhesive shall be mixed with the amount of water determined according to 4.3. The time at which the adhesive is first added to the wa
43、ter is noted t0. An excess of adhesive shall be transferred to the ring. Using a sawing motion the vertically held straight edge is used to strike off the excess material. Lower the cone to the surface of the adhesive using the spring plate of the release mechanism. The guide bar shall be opened for
44、 testing using the release mechanism. The time between successive cone penetration should be not greater than 1/20 of the utilisation time. The cone shall be cleaned and dried between each penetration and there should be at least 12 mm between each penetration mark. The time at which the depth of pe
45、netration achieved (35 2) mm above the glass plate shall be noted t1. 4.5.4 Expression of results The end of utilisation time t is given by the following formula: t = ( t1 t0) x 0,8 where t1is the time at which the depth of penetration (35 2) mm above the glass plate is achieved, in minutes t0is the
46、 time at which the adhesive is first added to the water, in minutes 4.6 Determination of the bond strength 4.6.1 Principle The bond strength of an adhesive pad shall be measured by applying a force perpendicularly to the adhesion interface. NOTE Polystyrene is used as background as a typical insulat
47、ing product. EN 14496:2005 (E) 10 4.6.2 Apparatus a) Two blocks (gauges) 20 mm thickness, 200 mm length, 20 mm width; b) five supports (racks) (150 150 60) mm (see Figure 1); c) a non absorbent plate (e.g. PVC); d) five pieces of expanded moulded polystyrene (100 100 40) mm without surface treatment
48、 or cut expanded polystyrene with similar surface (cohesion 0,14 MPa). Five pieces are required for each adhesive tested; e) a taping knife (width 150 mm); f) bowl, balance, stirrer, etc. for gauging; g) a ventilated oven at (40 2) C; h) five metal plates (100 100 10) mm; i) double face adhesive tap
49、e (adhesion 0,15 MPa); j) hot-melt adhesive (adhesion 0,15 MPa); k) a dynamometer or an appropriate device to apply a convenient tensile force permitting readings to 10 N and having a self-centring clamp (see Figure 2); l) testing plate. EN 14496:2005 (E) 11 Dimensions in mm Key 1 Metal plate 2 Polystyrene 3 Adhesive 4 Support (rack) Figure 1 Support (rack) for preparing specimens for adhesion strength test EN 14496:2005 (E) 12 Key 1 Operating device 2 Spherical head screw 3 Dynamometer Figure 2 Example of adhesion tes
