1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 14617-5:2012Agglomerated stone TestmethodsPart 5: Determination of freeze and thawresistanceBS EN 14617-5:2012 BRITISH STANDARDNational forewordThis British Standard is the
2、 UK implementation of EN 14617-5:2012.It supersedes BS EN 14617-5:2005 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/545, Natural stone.A list of organizations represented on this committee can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
3、 does 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 75919 2ICS 91.100.15Compliance with a British Standard cannot confer immunity fromleg
4、al 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 14617-5:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14617-5 April 2012 ICS 91.100.15 Supersedes
5、EN 14617-5:2005English Version Agglomerated stone - Test methods - Part 5: Determination of freeze and thaw resistance Pierre agglomre - Mthodes dessai - Partie 5: Dtermination de la rsistance au gel et au dgel Knstlich hergestellter Stein - Prfverfahren - Teil 5: Bestimmung der Frost-Tau-Wechselbes
6、tndigkeit 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 bibliographi
7、cal 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
8、 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 national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hun
9、gary, 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 Managem
10、ent 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 14617-5:2012: EBS EN 14617-5:2012EN 14617-5:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms, definitions
11、 and symbols .43.1 Terms and definitions .43.2 Symbols 44 Principle 45 Apparatus .46 Preparation of the specimens 56.1 Sampling .56.2 Conditioning before testing 57 Test procedure .57.1 Water saturation.57.2 Freeze/thaw cycling .57.3 Flexural strength determination .58 Expression of results 59 Test
12、report 6Bibliography 7BS EN 14617-5:2012EN 14617-5:2012 (E) 3 Foreword This document (EN 14617-5:2012) 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 pub
13、lication of an identical 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 CENELE
14、C shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14617-5:2005. 6.2, 7.3 and Clause 8 have 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
15、 stones which includes the following: 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: Determ
16、ination of the abrasion resistance EN 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 resist
17、ance to fixing (dowel hole) EN 14617-9, 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 expansio
18、n coefficient EN 14617-12, Agglomerated 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 1461
19、7-16, Agglomerated stone Test methods 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:
20、 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, Switzerland, Turkey and the Uni
21、ted Kingdom. BS EN 14617-5:2012EN 14617-5:2012 (E) 4 1 Scope This European Standard specifies a method to assess the effect of freeze/thaw cycles on agglomerated stones. It contains provisions for a technological test to be carried out to assess the effect of freeze/thaw cycles on the flexural stren
22、gth characteristics of the stone. 2 Normative references The following documents, in whole or in part, are normatively referenced 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 refere
23、nced document (including any amendments) applies. EN 14617-2:2008, Agglomerated stone Test methods Part 2: Determination of flexural strength (bending) 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the following term and definition applies. 3.1.1 freez
24、e/thaw resistance ability of the agglomerated stone product saturated by water to resist the effect of freeze/thaw cycling 3.2 Symbols KMf 25coefficient of freeze/thaw resistance in flexural strength (after 25 freeze/thaw cycles); Rf flexural strength average value (MPa) of dried, unfrosted specimen
25、s; RMf flexural strength average value (MPa) of specimens after 25 freeze/thaw cycles. 4 Principle The principle of this test method is the determination of the ratio between the flexural strength of specimens after 25 freeze/thaw cycles and that of unfrosted specimens. One freeze/thaw cycle include
26、s a freezing part, when a water saturated specimen is loaded into a freezer (temperature ( 20 5) C), and a thawing part, when a frosted specimen is immersed in tap water (temperature (20 5) C). 5 Apparatus 5.1 A freezing chamber of sufficient capacity to hold the required number of specimens, possib
27、ly with an automatic control system to programme the freezing and thawing cycles within the chamber, capable of maintaining the temperature at (- 20 5) C. 5.2 A temperature recording system or thermometer capable of measuring temperatures to 0,1 C. 5.3 A linear measuring device with an accuracy of 0
28、,5 mm (for the flexural measurement). 5.4 A desiccator. BS EN 14617-5:2012EN 14617-5:2012 (E) 5 5.5 A ventilated oven capable of maintaining a temperature of (40 5) C. 5.6 Tap water. 6 Preparation of the specimens 6.1 Sampling 6.1.1 The sampling is not the responsibility of the test laboratory, exce
29、pt when specially requested. 6.1.2 For the tests at least 5 specimens shall be selected from a homogeneous batch, having surface finish, dimension and tolerances according to EN 14617-2:2008, 6.2.2. Two sets of specimens are required: one to be tested by determination of flexural strength according
30、to EN 14617-2 after being subjected to the freeze/thaw cycles; the other to be tested by determination of flexural strength according to EN 14617-2 without freeze/thaw cycling. Each set shall be randomly selected from the body of the batch to be tested. 6.2 Conditioning before testing The specimens
31、shall be conditioned at room temperature (40 5) C for (24 2) h. Constant mass is reached when the difference between two weightings carried out (24 2) h apart is no greater than 0,1 % of the first of the two masses. After drying and prior to testing, the specimens shall be stored at (20 5) C. Once t
32、hermal equilibrium is reached, the test shall be performed within 24 h. 7 Test procedure 7.1 Water saturation Specimens for freeze/thaw cycling are immersed completely in tap water at (20 5) C to obtain constant mass, i.e. difference 0,1 mass % by consecutive weighing/24 h. 7.2 Freeze/thaw cycling W
33、ater saturated specimens are placed into the freezer. The specimens should be loaded into the freezer in a wire grate, so as not to touch each other or the freezer walls. When (- 20 5) C temperature is reached, the specimens shall be placed in the freezer for at least 4 h. Then the frosted specimens
34、 are unloaded and immersed in tap water at (20 5) C. When this temperature is reached, the specimens shall be immersed for at least 2 h. 25 of these freeze/thaw cycles have to be performed. After the last cycle is finished, the specimens are removed from the water. 7.3 Flexural strength determinatio
35、n After 25 freeze/thaw cycles and after conditioning according to 6.2, the flexural strength test is performed on the samples according to EN 14617-2. 8 Expression of results The change in performance is determined from the individual results using the following formula: BS EN 14617-5:2012EN 14617-5
36、:2012 (E) 6 100fff25=RRMKM9 Test report The test report shall contain the following information: a) unique identification number of the report; b) number and year of issue of this European Standard, i.e. EN 14617-5:2012; c) name and address of the test laboratory, and the address where the test was
37、carried out if different from the test laboratory; d) name and address of the client; e) date of delivery of the sample or of the specimens; f) date when the specimens were prepared (if relevant) and the date of testing; g) number of specimens in the sample; h) dimensions of the specimens; i) freeze
38、 and thaw cycle; j) statement on measurement uncertainty (where appropriate); k) all deviations from the standard and their justification; l) remarks. The test report shall contain the signature(s) and role(s) of the person(s) responsible for the testing and the date of issue of the report. It shall
39、 also state that the report shall not be partially reproduced without the 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 organization which carried out the sampling; surface finish of the
40、 specimens (if relevant to the test); nature of the binders. BS EN 14617-5:2012EN 14617-5:2012 (E) 7 Bibliography 1 EN 12440, Natural stone Denomination criteria 2 EN 14618, Agglomerated stone Terminology and classification This page deliberately left blankThis page deliberately left blankBSI is the
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