Natural stone test methods - Determination of sensitivity to changes in appearance produced by thermal cycles

This European Standard specifies a method to assess possible alterations of natural stones (mainly visible sensitivity to oxidation processes) under the effect of sudden changes in temperature (thermal shock).

Prüfverfahren für Naturwerkstein - Bestimmung der Empfindlichkeit gegen Änderungen des äußeren Erscheinungsbildes durch thermische Zyklen

Diese Europäische Norm legt ein Verfahren zur Bewertung möglicher Verwitterungen von Natursteinen (vorwiegend sichtbare Empfindlichkeit auf Oxidationsprozesse) unter der Einwirkung plötzlicher Temperaturwechsel (thermischer Schock) fest.

Méthodes d'essai pour pierres naturelles - Détermination de la sensibilité aux changements d'aspect induits par des cycles thermiques

La présente Norme européenne décrit une méthode permettant d’évaluer les modifications possibles des pierres naturelles (sensibilité aux procédés d’oxydation généralement visible) sous l’effet de changements brusques de température (choc thermique).

Preskušanje naravnega kamna - Ugotavljanje občutljivosti pri spremembi videza, nastalega pri termičnih ciklih

Ta evropski standard določa metodo za ocenjevanje morebitnih sprememb naravnega kamna (predvsem vidne občutljivosti na oksidacijske procese) zaradi nenadnih sprememb temperature (temperaturni šok).

General Information

Status
Published
Public Enquiry End Date
14-Jan-2018
Publication Date
06-Feb-2019
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Feb-2019
Due Date
11-Apr-2019
Completion Date
07-Feb-2019

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Prüfverfahren für Naturwerkstein - Bestimmung der Empfindlichkeit gegen Änderungen des äußeren Erscheinungsbildes durch thermische ZyklenMéthodes d'essai pour pierres naturelles - Détermination de la sensibilité aux changements d'aspect induits par des cycles thermiquesNatural stone test methods - Determination of sensitivity to changes in appearance produced by thermal cycles91.100.15Mineralni materiali in izdelkiMineral materials and productsICS:Ta slovenski standard je istoveten z:EN 16140:2019SIST EN 16140:2019en,fr,de01-marec-2019SIST EN 16140:2019SLOVENSKI

STANDARDSIST EN 16140:20111DGRPHãþD
SIST EN 16140:2019
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16140
January
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{ sä s r rä s w Supersedes EN
s x s v rã t r s sEnglish Version

Natural stone test methods æ Determination of sensitivity to changes in appearance produced by thermal cycles Mßthodes d 5essai pour pierres naturelles æ Dßtermination de la sensibilitß aux changements d 5aspect induits par des cycles thermiques

Prüfverfahren für Naturwerkstein æ Bestimmung der Empfindlichkeit gegen Änderungen des äußeren Erscheinungsbildes durch thermische Zyklen This European Standard was approved by CEN on

s { November
t r s zä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels

t r s { CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s x s v rã t r s { ESIST EN 16140:2019

EN 16140:2019 (E) 2 Contents Page European foreword ....................................................................................................................................................... 3 1 Scope .................................................................................................................................................................... 5 2 Normative references .................................................................................................................................... 5 3 Terms and definitions ................................................................................................................................... 5 4 Symbols and abbreviations ......................................................................................................................... 5 5 Principle ............................................................................................................................................................. 5 6 Apparatus ........................................................................................................................................................... 5 7 Preparation of specimens ............................................................................................................................ 5 7.1 Sampling ............................................................................................................................................................. 5 7.2 Test specimens ................................................................................................................................................. 6 7.2.1 Surface finish .................................................................................................................................................... 6 7.2.2 Dimensions ........................................................................................................................................................ 6 8 Test procedures ............................................................................................................................................... 6 8.1 Control measurements before cycling ..................................................................................................... 6 8.2 Description of the cycles ............................................................................................................................... 6 8.3 Control measurements after cycling ........................................................................................................ 6 9 Expression of results ...................................................................................................................................... 9 10 Test report ......................................................................................................................................................... 9 Annex A (informative)

Examples of evaluation codes for changes of aspect ......................................... 11 Annex B (informative)

Adapted thermal shock test ....................................................................................... 17

SIST EN 16140:2019

EN 16140:2019 (E) 3 European foreword This document (EN 16140:2019) 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 identical text or by endorsement, at the latest by July 2019, and conflicting national standards shall be withdrawn at the latest by July 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document will supersede EN 16140:2011. In comparison with the previous edition, the changes concern essentially the interpretation of the modification of aspect after the thermal cycles. In Annex A, the figures are completed and clarified. This European Standard is one of the series of standards for tests on natural stone. Test methods for natural stone consist of the following standards: — EN 1925, Natural stone test methods — Determination of water absorption coefficient by capillarity; — EN 1926, Natural stone test methods — Determination of uniaxial compressive strength; — EN 1936, Natural stone test methods — Determination of real density and apparent density, and of total and open porosity; — EN 12370, Natural stone test methods — Determination of resistance to salt crystallization; — EN 12371, Natural stone test methods — Determination of frost resistance; — EN 12372, Natural stone test methods — Determination of flexural strength under concentrated load; — EN 12407, Natural stone test methods — Petrographic examination; — EN 12440, Natural stone — Denomination criteria; — EN 12670, Natural stone — Terminology; — EN 13161, Natural stone test methods — Determination of flexural strength under constant moment; — EN 13364, Natural stone test methods — Determination of the breaking load at dowel hole; — EN 13373, Natural stone test methods — Determination of geometric characteristics on units; — EN 13755, Natural stone test methods — Determination of water absorption at atmospheric pressure; — EN 14066, Natural stone test methods — Determination of resistance to ageing by thermal shock; — EN 14146, Natural stone test methods — Determination of the dynamic modulus of elasticity (by measuring the fundamental resonance frequency); SIST EN 16140:2019

EN 16140:2019 (E) 4 — EN 14147, Natural stone test methods — Determination of resistance to ageing by salt mist; — EN 14157, Natural stone test methods — Determination of the abrasion resistance; — EN 14158, Natural stone test methods — Determination of rupture energy; — EN 14231, Natural stone test methods — Determination of the slip resistance by means of the pendulum tester; — EN 14579, Natural stone test methods — Determination of sound speed propagation; — EN 14580, Natural stone test methods — Determination of static elastic modulus; — EN 14581, Natural stone test methods — Determination of linear thermal expansion coefficient; — EN 16301, Natural stone test methods — Determination of sensitivity to accidental staining. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16140:2019

EN 16140:2019 (E) 5 1 Scope This document specifies a method to assess possible alterations of natural stones (mainly visible sensitivity to oxidation processes) under the effect of sudden changes in temperature (thermal shock). 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 11664-2, Colorimetry - Part 2: CIE standard illuminants (ISO 11664-2) 3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses:

IEC Electropedia: available at http://www.electropedia.org/

ISO Online browsing platform: available at http://www.iso.org/obp 4 Symbols and abbreviations e Thickness of the test specimens, in mm 5 Principle The specimens are subjected to successive cycles, each formed by drying at (70 ± 5) °C followed by immediate immersion in water at (20

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