1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 14617-6:2012Agglomerated stone TestmethodsPart 6: Determination of thermal shockresistanceBS EN 14617-6:2012 BRITISH STANDARDNational forewordThis British Standard is the U
2、K implementation of EN 14617-6:2012.It supersedes BS EN 14617-6:2005 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/545, Natural stone.A list of organizations represented on this committee can beobtained on request to its secretary.This publication d
3、oes not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 75917 8ICS 91.100.15Compliance with a British Standard cannot confer immunity fromlegal
4、 obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2012.Amendments issued since publicationDate Text affectedBS EN 14617-6:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14617-6 April 2012 ICS 91.100.15 Supersedes EN
5、 14617-6:2005English Version Agglomerated stone - Test methods - Part 6: Determination of thermal shock resistance Pierre agglomre - Mthodes dessai - Partie 6: Dtermination de la rsistance au choc thermique Knstlich hergestellter Stein - Prfverfahren - Teil 6: Bestimmung der Temperaturwechselbestndi
6、gkeit This European Standard was approved by CEN on 9 March 2012. 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
7、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
8、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, France, Germany, Greece, Hungary
9、, 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 COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management
10、Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14617-6:2012: EBS EN 14617-6:2012EN 14617-6:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Symbols 44 Principle 4
11、5 Apparatus .46 Preparation of specimen .56.1 Sampling .56.2 Dimensions of the test specimens.56.3 Drying the specimens .57 Procedure .57.1 Control measurements before cycling 57.2 Description of the cycles 57.3 Control measurements after cycling .68 Expression of results 69 Test report 6Bibliograph
12、y 8BS EN 14617-6:2012EN 14617-6:2012 (E) 3 Foreword This document (EN 14617-6:2012) has been prepared by Technical Committee CEN/TC 246 “Natural stones”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an iden
13、tical text or by endorsement, at the latest by October 2012, and conflicting national standards shall be withdrawn at the latest by October 2012. 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
14、 responsible for identifying any or all such patent rights. This document supersedes EN 14617-6:2005. 6.3 has been modified since the last edition of this European Standard. This European Standard is one of a series of standards for test methods for agglomerated stones which includes the following:
15、EN 14617-1, Agglomerated stone Test methods Part 1: Determination of apparent density and water absorption EN 14617-2, Agglomerated stone Test methods Part 2: Determination of flexural strength (bending) EN 14617-4, Agglomerated stone Test methods Part 4: Determination of the abrasion resistance EN
16、14617-5, Agglomerated stone Test methods Part 5: Determination of freeze and thaw resistance EN 14617-6, Agglomerated stone Test methods Part 6: Determination of thermal shock resistance EN 14617-8, Agglomerated stone Test methods Part 8: Determination of resistance to fixing (dowel hole) EN 14617-9
17、, Agglomerated stone Test methods Part 9: Determination of impact resistance EN 14617-10, Agglomerated stone Test methods Part 10: Determination of chemical resistance EN 14617-11, Agglomerated stone Test methods Part 11: Determination of linear thermal expansion coefficient EN 14617-12, Agglomerate
18、d stone Test methods Part 12: Determination of dimensional stability EN 14617-13, Agglomerated stone Test methods Part 13: Determination of electrical resistivity EN 14617-15, Agglomerated stone Test methods Part 15: Determination of compressive strength EN 14617-16, Agglomerated stone Test methods
19、Part 16: Determination of dimensions, geometric characteristics and surface quality of modular tiles 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,
20、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, Switzerland, Turkey and the United Kingdom. BS EN 14617-6:2012EN 1461
21、7-6:2012 (E) 4 1 Scope This European Standard specifies a method to assess possible modifications of agglomerated stones under the effect of sudden changes in temperature (thermal shock) by immersion in hot water. 2 Normative references The following documents, in whole or in part, are normatively r
22、eferenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 14617-2:2008, Agglomerated stone Test methods Part 2: Determination
23、 of flexural strength (bending) 3 Symbols For the purposes of this document, the following symbols apply. m0mass of the dried specimen before the test, in g; mfmass of the dried specimen after the test, in g; m % change in the mass of the dried specimens, as a percentage; Rf flexural strength averag
24、e value of dried, reference specimens, in MPa; Rsf flexural strength average value of specimens after 20 cycles, in MPa; Rf, 20coefficient of thermal shock resistance as change in flexural strength (as a percentage after 20 cycles). 4 Principle After drying at (40 5) C until constant mass is attaine
25、d, the specimens are subjected to successive cycles, each formed by thermal shock at (70 5) C followed by immediate immersion in water at (15 5) C. After 20 cycles, the specimens are visually inspected and compared with the reference specimen, and all visible alterations recorded. Finally, the mass
26、and flexural strength changes of specimens after 20 cycles will be determined in comparison with the values of the same quantities of reference specimens. NOTE The selected test temperature of 70 C is for flooring and wall applications. 5 Apparatus 5.1 A ventilated oven capable of maintaining a temp
27、erature of (70 5) C. 5.2 A tank equipped with a cooling system capable of maintaining a temperature of (15 5) C and a flat base comprising small non-oxidising and non-absorbent supports for the specimens. 5.3 A weighing instrument with an accuracy of at least 0,01 % of the mass to be weighed. 5.4 A
28、desiccator. BS EN 14617-6:2012EN 14617-6:2012 (E) 5 5.5 Demineralised water. 5.6 A linear measuring device with an accuracy of 0,5 mm (for the flexural measurement). 6 Preparation of specimen 6.1 Sampling Sampling is not the responsibility of the test laboratory except where specially requested. Two
29、 sets of at least 7 test specimens which are considered representative of the body of agglomerated stone being tested shall be selected from a homogeneous batch. One specimen set is used as a control: both the mass and flexural strength according to EN 14617-2 are determined before the thermal shock
30、 test. For the other specimen set, both the mass and flexural strength according to EN 14617-2 shall be determined after the thermal shock cycles. The specimens should be carefully observed and all alterations, such as cracks, holes, etc., noticed before and after the thermal shock cycles 6.2 Dimens
31、ions of the test specimens The test specimens shall be randomly selected from a homogeneous batch, having surface finish, dimension and tolerances according to EN 14617-2:2008, 6.2.2. 6.3 Drying the specimens The specimens shall be conditioned at room temperature (20 5) C for (24 2) h. For agglomera
32、ted stones with cement or cement and polymer as binder, the specimens shall be dried at (40 5) C to a constant mass. Constant mass is reached when the difference between two weighings carried out (24 2) h apart is no greater than 0,1 % of the first of the two masses. After drying and prior to testin
33、g, the specimens shall be stored at (20 5) C. Once thermal equilibrium is reached, the test shall be performed within 24 h. 7 Procedure 7.1 Control measurements before cycling The dried specimens shall be visually inspected and compared to the reference specimen. All alterations, such as cracks, hol
34、es, etc., shall be recorded. Then, their mass (m0) shall be measured and the flexural strength determined according to EN 14617-2. This is to be regarded as the initial value (Rf). 7.2 Specification of the cycles The dried specimens shall be subjected to changes of temperature according to the follo
35、wing procedure: (18 1) h in a ventilated oven at (70 5) C, followed immediately by (6 0,5) h completely submerged in distilled or demineralised water with a temperature of (15 5) C. Both in the oven and in the water container, the specimens shall be placed on the supports at a distance of at least 5
36、0 mm from one another and from the wall. BS EN 14617-6:2012EN 14617-6:2012 (E) 6 In the water container, the specimens shall be placed on supports located at the bottom of the container which has been filled with distilled or demineralised water to such a height that the water level above the specim
37、ens is (60 10) mm. The procedure described above which constitutes one cycle shall be repeated for 20 cycles. 7.3 Control measurements after cycling After the 20thcycle, the specimens shall be dried to constant mass at (40 5) C according to 6.3 and weighed (mf). They shall then be visually inspected
38、 and compared to the reference specimen. All alterations shall be recorded. Finally, the mass (mf) shall be measured and the flexural strength (Rsf) determined according to EN 14617-2. 8 Expression of results For each specimen: 8.1 Describe the modifications observed visually by comparison with the
39、reference specimen, such as: change of colour, appearance of spots; swelling; cracking; scaling or exfoliation. 8.2 Calculate the change in mass for each sample and then calculate the mean value to the nearest 0,01 % according to the following formula: 1000f0=mmmm%(1) 8.3 Calculate the change in fle
40、xural strength for each sample and then calculate the mean value to the nearest 0,1 % according to the following formula: 100%fsfff,20=RRRR(2) 9 Test report The test report shall contain the following information: a) unique identification number of this report; b) number and year of issue of this Eu
41、ropean Standard, i.e. EN 14617-6:2012; c) name and address of testing laboratory, and the address where the test was carried out if it is different from the test laboratory; d) name and address of client; e) date of delivery of the samples; BS EN 14617-6:2012EN 14617-6:2012 (E) 7 f) date when the sp
42、ecimens were prepared and the date of testing; g) number of specimens in the sample; h) dimensions of the specimens; i) selected test temperature (70 C); j) any observed alteration for each specimen; k) percentage change in mass for each specimen and the mean percentage change in mass; l) percentage
43、 change in flexural strength for each specimen and the mean percentage change in flexural strength; m) statement on measurement uncertainty (where appropriate); n) all deviation from the standard and their justification; o) remarks. The test report shall contain the signatures and roles of those res
44、ponsible for the testing and the date of issue of the report. It shall also state that the report shall not be partially reproduced without written consent of the test laboratory. It is the responsibility of the client to supply the following information: name of the supplier; name of the person or
45、organization which carried out the sampling; surface finish of the specimens (if relevant to the test); nature of the binders. BS EN 14617-6:2012EN 14617-6:2012 (E) 8 Bibliography 1 EN 12440, Natural stone Denomination criteria 2 EN 14618, Agglomerated stone Terminology and classification This page
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