BS EN ISO 10545-11-1996 Ceramic tiles - Determination of crazing resistance for glazed tiles《瓷砖 釉面砖抗裂纹的测量》.pdf

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1、BRITISH STANDARD BS EN ISO 10545-11:1996 Ceramic tiles Part 11: Determination of crazing resistance for glazed tiles The European Standard EN ISO 10545-11:1996 has the status of a British Standard ICS 91.100.20BS EN ISO 10545-11:1996 This British Standard, having been prepared under the direction of

2、 the Sector Board forBuilding and Civil Engineering, was published underthe authority of the Standards Boardand comes intoeffect on 15 December 1996 BSI 10-1998 The following BSI references relate to the work on this standard: Committee reference B/539 Draft for comment 92/15381 DC ISBN 0 580 26774

3、1 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee B/539, Ceramic tiles and other rigid tiling, upon which the following bodies were represented: Association of Building Engineers British Adhesives and Sealants Association

4、 British Ceramic Research Ltd. British Ceramic Tile Council Building Employers Confederation Chartered Institute of Building Concrete Society Contract Flooring Association Department of the Environment (Building Research Establishment) Federation of Master Builders Federation of Resin Formulators an

5、d Applicators Institute of Clerks of Works of Great Britain Local Authorities Association London Underground Ltd. Mortar Producers Association National Federation of Clay Industries National Federation of Terrazzo, Marble and Mosaic Specialists National Master Tile Fixers Association National Tile,

6、Faience and Mosaic Fixers Society Natural Slate Quarries Association Royal Institute of British Architects Stone Federation Amendments issued since publication Amd. No. Date CommentsBS EN ISO 10545-11:1996 BSI 10-1998 i Contents Page Committees responsible Inside front cover National foreword ii For

7、eword 2 1 Scope 3 2 Definition 3 3 Principle 3 4 Apparatus 3 5 Test specimens 3 6 Procedure 3 7 Test report 3 Figure 1 Examples of crazes 4BS EN ISO 10545-11:1996 ii BSI 10-1998 National foreword This British Standard has been prepared by Technical Committee B/539. It is the English language version

8、 of EN ISO10545-11:1996 Ceramic tiles Part11:Determination of crazing resistance for glazed tiles, published by the European Committee for Standardization (CEN). It supersedes BS6431-17:1983 which will not be withdrawn until BS EN ISO10545-1 to BS EN ISO10545-16 have all been published. This Part of

9、 BS EN ISO10545 was originally drafted by CEN/TC67, Ceramic tiles, as EN105, published in 1982, and confirmed in 1991. Subsequently the European Standard was revised by ISO as a Part of ISO10545 and the International Standard has now been approved by CEN as a Part of EN ISO10545. The technical chang

10、es from the method described in BS6431-17 are as follows. The glazed tiles are maintained in the autoclave at the high temperature and pressure for 2h whereas the duration was previously 1h. Before the autoclave test, all tiles are to be re-heated to 500C for 2h unless they are freshly fired tiles b

11、eing tested as part of a routine in-house quality assurance programme. The test method in this Part is referred to in the specification for ceramic tiles, ISO13006, which includes the requirements for all the tiles standardized in BS6431-1 to BS6431-9. A British Standard does not purport to include

12、all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i a

13、nd ii, theENtitle page, pages 2 to 4 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10545-11 August 1996 IC

14、S 91.100.20 Supersedes EN 105:1991 Descriptors: Ceramics, enamelled ceramic, tiles, tests, cracking tests, determination, crazing resistance English version Ceramic tiles Part 11: Determination of crazing resistance for glazed tiles (ISO10545-11:1994) Carreaux et dalles cramiques Partie 11: Dtermina

15、tion de la rsistance au tressaillage pour les carreaux maills (ISO10545-11:1994) Keramische Fliesen und Platten Teil 11: Bestimmung der Widerstandsfhigkeit gegen Glasurrisse glasierter Fliesen und Platten (ISO10545-11:1994) This European Standard was approved by CEN on 1996-01-14. CEN members are bo

16、und 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

17、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 translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status

18、 as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit

19、 Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members Ref. No. EN ISO 10545-11:1996 EENISO 10545-11:1996 BSI 10-1998 2 Foreword The text of the International Standard from Technical Committee ISO/TC189

20、, Ceramic tiles, of the International Organization for Standardization (ISO) has been taken over as a European Standard by Technical Committee CEN/TC67, Ceramic tiles, the secretariat of which is held by UNI. This European Standard replaces EN105:1991. ISO10545 consists of the following Parts, under

21、 the general title Ceramic tiles. Part 1: Sampling and basis for acceptance; Part 2: Determination of dimensions and surface quality; Part 3: Determination of water absorption, apparent porosity, apparent relative density and bulk density; Part 4: Determination of modulus of rupture and breaking str

22、ength; Part 5: Determination of impact resistance by measurement of coefficient of restitution; Part 6: Determination of resistance to deep abrasion for unglazed tiles; Part 7: Determination of resistance to surface abrasion for glazed tiles; Part 8: Determination of linear thermal expansion; Part 9

23、: Determination of resistance to thermal shock; Part 10: Determination of moisture expansion; Part 11: Determination of crazing resistance for glazed tiles; Part 12: Determination of frost resistance; Part 13: Determination of chemical resistance; Part 14: Determination of resistance to stains; Part

24、 15: Extraction of lead and cadmium from glazed tiles; Part 16: Determination of small colour differences; Part 17: Determination of coefficient of friction. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the

25、latest by February 1997, and conflicting national standards shall be withdrawn at the latest by February 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark,

26、Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.ENISO 10545-11:1996 BSI 10-1998 3 1 Scope This part of ISO10545 defines a test method for determining the crazing resistance of all glazed ceramic t

27、iles except when the crazing is an inherent decorative feature of the product. NOTE 1ISO13006:, Ceramic tiles Definitions, classification, characteristics and marking (to be published), provides property requirements for tiles and other useful information on these products. 2 Definition For the purp

28、oses of this part of ISO10545, the following definition applies. 2.1 craze crack, showing as a fine hairline, limited to the glazed surface of a tile 3 Principle Determination of the resistance to the formation of crazes by subjecting whole tiles to steam at high pressure in an autoclave, then exami

29、nation of the tiles for crazes after applying a stain to the glazed faces. 4 Apparatus 4.1 Autoclave, of sufficient internal volume to accommodate five tiles with adequate separation. Ideally, the steam is fed from an external source in order to maintain a pressure of (500 20)kPa, that is, a steam t

30、emperature of (159 1) C for 2h. Alternatively, a directly heated autoclave may be used. 5 Test specimens 5.1 A minimum of five whole tiles shall be tested. 5.2 Exceptionally large tiles may be cut into pieces for enclosure in the autoclave, but all pieces shall be tested. The cut pieces shall be as

31、large as possible. 6 Procedure 6.1 First examine the tiles for visible defects by viewing them with the naked eye (or with the aid of spectacles if usually worn) from a distance of 25cm to 30cm under an illumination of approximately300lx. All test specimens shall be free from crazing at the commence

32、ment of the test. The methylene blue solution described in 6.3 may be used to detect pretest crazing. Except in the case of freshly fired tiles being tested as part of a routine in-house quality assurance programme, the tile shall be prepared by reheating to (500 15)C at a rate not greater than 150C

33、/h and with a soak of not less than 2h. 6.2 Place the test specimens in the autoclave (4.1) in such a way that there is air space between them. Raise the pressure in the autoclave gradually for a period of 1 h until it reaches (500 20)kPa, (159 1)C, and maintain this pressure for 2h. Then turn off t

34、he steam source (or the heat supply in the case of directly heated autoclaves), allow the pressure to fall as rapidly as possible to atmospheric and cool the test specimens in the autoclave for0,5h. Bring the test specimens into the laboratory atmosphere, place them singly on a flat surface and allo

35、w them to cool for a further period of0,5h. 6.3 Brush a suitable stain, such as a 1% aqueous solution of methylene blue containing a small quantity of wetting agent, on to the glazed surfaces of the test specimens. After 1min, wipe off the stain with a damp cloth. 6.4 Examine the test specimens for

36、crazes, taking care to avoid confusing crazes with scratches and ignoring cracks. 7 Test report The test report shall include the following information: a) reference to this part of ISO10545; b) a description of the tiles; c) the number of test specimens; d) the number of test specimens showing craz

37、ing; e) a description of the crazing (written text, drawing or photograph).EN ISO 10545-11:1996 4 BSI 10-1998 Figure 1 Examples of crazes5 blankBSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

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