prEN 14066

Natural stone test methods - Determination of resistance to ageing by thermal shock

This European Standard specifies a method to assess possible modifications of natural stones under the effect of sudden changes in
temperature (thermal shock).This European Standard specifies a method to assess possible modifications of natural stones under the effect of sudden changes in temperature (thermal shock).

Prüfverfahren für Naturstein - Bestimmung des Widerstandes gegen Alterung durch Wärmeschock

Diese Europäische Norm legt ein Verfahren für die Beurteilung möglicher Veränderungen von Natursteinen
unter Einwirkung plötzlicher Temperaturwechsel (Wärmeschock) fest.

Méthodes d'essai pour les pierres naturelles - Détermination de la résistance au vieillissement accéléré par choc thermique

La présente Norme européenne décrit une méthode permettant de déterminer les modifications possibles des
pierres naturelles sous l’effet de changements brusques de températures (choc thermique).

Preskušanje naravnega kamna - Ugotavljanje odpornosti proti staranju s temperaturnim šokom

General Information

• Status: Not Published
• Publication Date: 23-May-2010
• Withdrawal Date: 23-Nov-2010
• ICS: 73.020 - Mining and quarrying
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: CEN/TC 246 - Natural stones
• Drafting Committee: CEN/TC 246/WG 2 - Test methods
• Current Stage: 4098 - Decision to abandon - Enquiry
• Start Date: 09-Oct-2009
• Completion Date: 09-Oct-2009
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Ref Project: oSIST prEN 14066:2007 - Natural stone test methods - Determination of resistance to ageing by thermal shock

Relations

• Revises: EN 14066:2003 - Natural stone test methods - Determination of resistance to ageing by thermal shock
• Effective Date: 08-Jun-2022

Overview

The prEN 14066:2007 standard, developed by the European Committee for Standardization (CEN), specifies a test method for natural stones to determine their resistance to ageing caused by thermal shock. Thermal shock refers to the material modifications arising from sudden temperature changes, a critical factor affecting the durability and longevity of natural stone materials. This standard aims to provide reliable and reproducible procedures for assessing how natural stones respond to cycles of heating and rapid cooling, simulating real environmental stress conditions.

By following this method, industry professionals can quantify changes in mass, visual appearance, and dynamic elastic modulus of stone specimens. These measurements yield insight into the durability of natural stone under thermal shock – a key consideration for architects, engineers, and manufacturers involved in construction and restoration projects using natural stone materials.

---

Key Topics

• Scope and Purpose
  The standard defines a precise procedure to evaluate the effects of thermal shock on natural stones by subjecting specimens to cycles of drying at 105 ± 5 °C followed by immersion in water at 20 ± 5 °C.

• Specimen Preparation

  • Selection of at least 13 homogeneous specimens from a batch.
  • Specimens sized approximately 70 x 280 x 20 mm, with carefully finished surfaces.
  • Drying specimens until constant mass is achieved before testing.
  • Marking specimens to enable consistent dynamic modulus measurements before and after testing.

• Test Procedure

  • Subjecting specimens to 20 cycles of heating and cooling: 18 hours in a ventilated oven at 105 ± 5 °C, immediately followed by 6 hours submerged in water at 20 ± 5 °C.
  • Measuring mass changes and dynamic elastic modulus according to EN 14146 before and after cycling.
  • Visual inspection for surface changes such as cracking, scaling, color changes, and swelling.

• Result Expression

  • Quantitative results include percentage changes in mass and dynamic elastic modulus.
  • Qualitative observations detail physical alterations like exfoliation and color modification.
  • Comprehensive test report documentation including specimen details, client information, and testing conditions.

• Apparatus Requirements

  • Ventilated oven for drying specimens.
  • Water tank with non-reactive supports.
  • Precision scale with 0.01% accuracy.
  • Dynamic modulus measuring device compliant with EN 14146.

---

Applications

• Natural Stone Durability Assessment
  This standard is essential for evaluating stone materials used in external architectural elements where thermal fluctuations and moisture exposure are common. It helps predict service life and maintenance needs.

• Quality Control in Stone Production
  Manufacturers and suppliers can apply prEN 14066 to test stone batches for thermal shock resistance, ensuring consistent product quality before delivery.

• Material Selection for Construction and Restoration
  Architects and engineers can use results from this standard to select stone types that demonstrate superior resistance to thermal stress, crucial for projects in climates with high temperature variability.

• Research and Development
  Testing under prEN 14066 supports innovation in natural stone treatment and enhancement techniques designed to improve resistance to ageing from thermal effects.

---

Related Standards

prEN 14066 is part of a comprehensive suite of natural stone test methods developed by CEN/TC 246, including:

• EN 14146 – Determination of the dynamic modulus of elasticity of natural stone (used in conjunction with prEN 14066).
• EN 1925 – Determination of water absorption coefficient by capillarity.
• EN 1926 – Determination of uniaxial compressive strength.
• EN 12370 – Determination of resistance to salt crystallisation.
• EN 13919 – Determination of resistance to ageing by SO2 in the presence of humidity.
• EN 14147 – Determination of resistance to ageing by salt mist.
• EN 14157 – Determination of abrasion resistance.

These complementary standards collectively address the physical, mechanical, and chemical durability aspects of natural stone, facilitating a holistic assessment of stone performance in diverse environmental conditions.

---

By implementing prEN 14066:2007, stakeholders in the natural stone industry enhance their ability to predict material performance, extend architectural longevity, and ensure the sustainable use of natural stone resources under variable thermal conditions.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2007
Preskušanje naravnega kamna - Ugotavljanje odpornosti proti staranju s
temperaturnim šokom
Natural stone test methods - Determination of resistance to ageing by thermal shock
Prüfverfahren für Naturstein - Bestimmung des Widerstandes gegen Alterung durch
Wärmeschock
Ta slovenski standard je istoveten z: prEN 14066
ICS:
73.020 Rudarstvo in kamnolomsko Mining and quarrying
izkopavanje
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2007
ICS 73.020; 91.100.15 Will supersede EN 14066:2003
English Version
Natural stone test methods - Determination of resistance to
ageing by thermal shock
Prüfverfahren für Naturstein - Bestimmung des
Widerstandes gegen Alterung durch Wärmeschock
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 246.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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 CEN Management Centre has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14066:2007: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope.4
2 Normative references.4
3 Principle.4
4 Symbols and abbreviations .4
5 Apparatus.4
6 Preparation of specimens.5
6.1 Sampling.5
6.2 Dimensions of the test specimens.5
6.3 Putting reference marks on the specimens .5
6.4 Drying the specimens.5
7 Test procedure.5
7.1 Control measurements before cycling .5
7.2 Description of the cycles .5
7.3 Control measurements after cycling .6
8 Expression of results.6
9 Test report.6

Foreword
This document (prEN 14066:2007) has been prepared by Technical Committee CEN/TC 246 “Natural stones”,
the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 14066:2003.
This draft standard is one of the series of draft standards for tests on natural stone.
Test methods for natural stone consist of the following parts:
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 crystallisation
EN 12372, Natural stone test methods – Determination of flexural strength under concentrated load
EN 12407, Natural stone test methods – Petrographic examination
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 13755, Natural stone test methods – Determination of water absorption at atmospheric pressure
EN 13373, Natural stone test methods – Determination of geometric characteristics on units
EN 13919, Natural stone test methods – Determination of resistance to ageing by SO action in the presence
of humidity
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)
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 14205, Natural stone test methods – Determination of Knoop hardness
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
...