1、DEUTSCHE NORM December 1997 Ceramic tiles Part 5: Determination of impact resistance by measurement of coefficient of restitution (IS0 10545-5 : 1996, including Technical Corrigendum 1 : 1996) English version of DIN EN IS0 10545-5 DIN - EN IS0 10545-5 ICs 91.1 00.20 Descriptors: Ceramics, tiles, imp
2、act resistance, testing. Keramische Fliesen und Platten - Teil 5: Bestimmung der Schlagfestigkeit durch Messung des Rckprallkoeffizienten (IS0 10545-5 : 1996, einschlielich Technische Korrektur 1 : 1996) European Standard EN IS0 10545-5 : 1997 has the status of a DIN Standard. A comma is used as the
3、 decimal marker. National foreword This standard has been published in accordance with a decision taken by CEN/TC 67 to adopt, without alteration, International Standard IS0 10545-5 : 1996 as a European Standard. The responsible German body involved in its preparation was the Normenausschu Materialp
4、rfung (Mate- rials Testing Standards Committee), Technical Committee Prfung von keramischen Bauteilen fr Wand- und Bodenbelge. EN comprises 8 pages. No pari of this standard may be reproduced without the prior permission of Ref. No. DIN EN IS0 10545-5 : 1997-1 Y Deutsches Institut fr Normung e. V.,
5、Berlin. wth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). English price group 06 Sales No. 1106 06.98 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 10545-5 September 1997 ICs 91.1 00.20 Descriptors: Ceramics, tiles, impact resistance, test
6、ing. English version Ceramic tiles Part 5: Determination of impact resistance by measurement of coefficient of restitution (IS0 10545-5 : 1996, including Technical Corrigendum 1 : 1996) Carreaux et dalles cramiques - Partie 5: Dtermination de la rsis- tance au choc par mesurage du coefficient de res
7、titution Rckprallkoeffizienten (IS0 10545-5 : 1996, Rectificatif Technique 1 : 1996 inclus) Keramische Fliesen und Platten - Teil 5: Bestimmung der Schlag- festigkeit durch Messung des (IS0 10545-5 : 1996, einschlielich Technische Korrektur 1 : 1996) This European Standard was approved by CEN on 199
8、7-08-23. CEN members are bound to comply with the CENKENELEC 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 stand- ards may be obt
9、ained on application to the Central Secretariat or to any CEN member. The European Standards exist 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 Secr
10、etariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United K
11、ingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1997. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN IS0
12、 10545-5: 1997 E Page 2 EN IS0 10545-5 : 1997 Foreword International Standard IS0 10545-5 : 1996 Ceramic tiles - Part 5: Determination of impact resistance by measurement of coefficient of restitution, which was prepared by ISO/TC 189 Ceramic tiles of the International Organization for Standardizati
13、on, has been adopted by Technical Committee CEN/TC 67 Ceramic tiles, the Secretariat of which is held by UNI, as a European Standard. EN IS0 10545 comprises the following parts, under the common title Ceramic tiles: Part 1 : Sampling and basis for acceptance Part 2: Determination of dimensions and s
14、urface quality Part 3: Determination of water absorption, apparent porosity, apparent relative density and bulk density Part 4: Determination of modulus of rupture and breaking strength Part 5: Determination of impact resistance by measurement of coefficient of restitution Part 6: Determination of r
15、esistance 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: Determination of resistance to thermal shock Part 1 O: Determination of moisture expansion Part 11 : Determination of crazi
16、ng resistance for glazed tiles Part 12: Determination of frost resistance Part 13: Determination of chemical resistance Part 14: Determination of resistance to stains Part 15: Determination of lead and cadmium given off by glazed tiles Part 16: Determination of small colour differences Part 17: Dete
17、rmination 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, and conflicting national standards withdrawn, by January 1998 at the latest. In accordance with the CENKENELEC Internal Regulati
18、ons, the national standards organizations of the follow- ing countries are bound to implement this European Standard: Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, a
19、nd the United Kingdom. Endorsement notice The text of the International Standard IS0 10545-5 : 1996, including Technical Corrigendum 1 : 1996, was approved by CEN as a European Standard without any modification. Page 3 EN IS0 10545-5 : 1997 1 Scope This part of IS0 10545 specifies a test method for
20、determining the impact resistance of ceramic tiles by measuring the coefficient of restitution. 2 Definition For the purpose of this part of IS0 10545, the fol- lowing definition applies. 2.1 coefficient of restitution between two im- pacting bodies, e: Relative velocity of departure div- ided by th
21、e relative velocity of approach. 3 Principle Determination of the coefficient of restitution by dropping a steel ball from a fixed height onto the test specimen and measuring the height of rebound. 4 Apparatus 4.1 (19 f 0,05) mm. Chrome steel ball, of diameter 4.2 Ball-release apparatus, (see figure
22、 I), consist- ing of a heavy steel base set on levelling screws with a vertical steel bar to which is attached an electromagnet, a guide tube and a test unit support. The test unit is clamped firmly in a position so that when the steel ball drops it impinges on the centre of the horizontal tile surf
23、ace. A clamping device is shown in figure 1, but any suitable system may be used. 4.3 Electronic timing device (optional), which, by means of a microphone, measures the time interval between the first and second impacts when the ball is dropped onto the test specimen. 5 Test specimens 5.1 Number of
24、test specimens A minimum of five pieces in dimensions 75 mm x 75 mm cut from five tiles. Tiles with facial dimensions less than 75 mm may be used. 5.2 Brief description of test units The test units consist of test specimens fixed to ma- ture concrete blocks by means of rigid epoxide resin adhesive.
25、Page 4 EN IS0 10545-5 : 1997 Timing equipment b i I Steel ball I -X I : Levelling screw X Tile-, o o Figure 1 - Ball-release apparatus 5.3 Concrete blocks The dense concrete blocks shall be of approximate dimensions 75 mm x 75 mm x 50 mm and prepared in moulds of this size, or alternatively cut from
26、 large concrete slabs. The following method describes the preparation of dense concrete blocks made from gravel/sand, but other aggregates may be used and then the surface water absorption test may not be appropriate. Concrete blocks or slabs may be made by adding one part by mass of Portland cement
27、 to 4.5 to 5.5 parts by mass of aggregate. The aggregate shall be gravel sand of O to 8 mm particle size with a continuous grading curve between the limits A and B in figure2. The total fines of particle size below 0,125 mm in the mix of concrete, including Portland cement, should be about 500 kg pe
28、r cubic metre. Page 5 EN IS0 10545-5 : 1997 100- 90- 80- 70- F F 2 60- w ._ ln L al u 3 c 50. 40. 30. 20. 10. , I 0 Curve A 0 Curve B O I 1 I I I I I l 1 I 0,125 O ,2 5 0.5 1 ,o 2,o 4.0 8.0 Nominal aperture size, mm Figure 2 - Grading curves for gravel sand of maximum particle size 8 mm The water/ce
29、ment ratio shall be 0.5. Thoroughly mix the constituents in a mechanical mixer and trowel into moulds of the required size. Compact for 90 s at 50 H2 on a vibrating table. Condition the concrete slabs for 48 h at (23 .t 2) “C and (50 k 5) % relative humidity before removing them from the moulds. Tho
30、roughly rinse off any mould release agent. Throughout the remaining con- ditioning, the slabs shall be held vertically, leaving gaps between them. Immerse in water at (20 f 2) “C for 6 d, then in air at (23 f 2) “C and (50 5) % relative humidity for 21 . The assembly face of the concrete shall have
31、an absorption of sur- face water after 4 h in the range of 0.5 cm3 to 1.5 cm3 when three specimens are tested in accord- ance with the method shown in annex A and figure A. 1 . Blocks subsequently cut from concrete slabs by wet methods require a minimum drying period of 24 h at (23 is the velocity o
32、f approach. Thus v= is the height of rebound, in centimetres; (= 981 cm/s2). Thus u= T is -, where Tis the time interval in 2 seconds t Page 7 EN IS0 10545-5 : 1997 Hence = 122,6T2 8 Calibration Assemble five test units (see 5.5) using (8 ? 0,5) mm thick, unglazed Bla tiles (water ab- sorption 0.5 %
33、) with plane surfaces. Test in ac- cordance with clause 6. The average height of rebound (h2) shall be (72,5 L- 1,5) cm so that the co- efficient of restitution is (0,85 i 0,Ol). 9 Test report The test report shall include the following information: a) reference to this part of IS0 10545; b) a descr
34、iption of the tiles; c) the coefficient of restitution of each of the five test specimens; d) the average coefficient of restitution; e) any indentation or cracking of test specimens. Annex A (informative) Determination of the water absorption at the surface of concrete blocks or slabs Attach a grad
35、uated glass cylinder (see figureA.l) to the concrete surface by means of a minimum amount of a suitable sealant around the perimeter of the base. Allow the sealant to dry. Fill the graduated cylinder to the zero mark with deionized or distilled water. Record the water level after 1 h, 2 h, 3 h and 4
36、 h and obtain a curve of surface water absorption versus time. Test the surface of three Specimens and obtain an average surface water absorption after 4 h. Page 8 EN IS0 10545-5 : 1997 Dimensions in millimetres 0 ext. 21 I 4 4 -0 ext. 11 Area = 70? mmz Lk, Figure A.l - Apparatus for measuring the surface water absorption of concrete blocks or slabs
