EN ISO 1927-8:2012

Monolithic (unshaped) refractory products - Part 8: Determination of complementary properties (ISO 1927-8:2012)

ISO 1927-8:2012 specifies methods for the determination of the properties of unshaped refractory materials from test pieces prepared and stored in accordance with ISO 1927-5. The methods complement those described in ISO 1927-6.
The methods have been adapted from standards for shaped refractory products to make them applicable to dense and insulating castables, and ramming materials as defined in ISO 1927-1, before and after firing.

Ungeformte (monolithische) feuerfeste Erzeugnisse - Teil 8: Bestimmung zusätzlicher Eigenschaften (ISO 1927-8:2012)

Dieser Teil der ISO 1927 legt Verfahren zur Bestimmung der Eigenschaften von ungeformten feuerfesten Werkstoffen fest, die an nach ISO 1927 5 hergestellten und gelagerten Probekörpern ermittelt werden. Die Verfahren sind eine Ergänzung zu den in ISO 1927 6 beschriebenen.
Die Verfahren basieren auf Normen für geformte feuerfeste Erzeugnisse und wurden so abgeändert, dass sie auf die in ISO 1927 1 festgelegten dichten und wärmedämmenden Feuerbetone und Rammmassen im ungebrannten und gebrannten Zustand anwendbar sind.

Produits réfractaires monolithiques (non façonnés) - Partie 8: Détermination des caractéristiques complémentaires (ISO 1927-8:2012)

L'ISO 1927-8:2012 spécifie des méthodes pour la détermination des propriétés de matériaux réfractaires monolithiques (non façonnés) à partir d'éprouvettes préparées et conservées conformément à l'ISO 1927-5. Les méthodes complètent celles décrites dans l'ISO 1927-6.
Les méthodes ont été adaptées à partir de Normes internationales pour produits réfractaires façonnés pour les rendre applicables aux bétons denses et isolants ainsi qu'aux matériaux moulables tels que définis dans l'ISO 1927-1, avant et après cuisson.

Neoblikovani ognjevzdržni izdelki - 8. del: Ugotavljanje komplementarnih lastnosti (ISO 1927-8:2012)

Ta del standarda ISO 1927 določa metode za ugotavljanje lastnosti neoblikovanih ognjevzdržnih izdelkov iz vzorcev, pripravljenih in skladiščenih v skladu s standardom ISO 1927-5. Te metode dopolnjujejo metode iz standarda ISO 1927-6. Te metode izhajajo iz standardov za oblikovane ognjevzdržne izdelke ter so prilagojene zgoščenim in izolacijskim betonom ter mašilnim materialom, kot je opredeljeno v standardu ISO 1927-1, pred žganjem in po njem.

General Information

• Status: Published
• Publication Date: 30-Nov-2012
• Withdrawal Date: 29-Jun-2013
• ICS: 81.080 - Refractories
• Technical Committee: CEN/TC 187 - Refractory products and materials
• Drafting Committee: CEN/TC 187/WG 2 - Unshaped refractory materials
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-Dec-2012
• Completion Date: 01-Dec-2012
• Ref Project: SIST EN ISO 1927-8:2013 - Unshaped refractory materials - Part 8: Determination of complementary properties (ISO 1927-8:2012)

Relations

• Replaces: EN 1402-8:2003 - Unshaped refractory products - Part 8: Determination of complementary properties
• Effective Date: 22-Dec-2008

Overview

EN ISO 1927-8:2012 is an international standard developed by ISO and adopted by CEN, focusing on monolithic (unshaped) refractory products. Specifically, Part 8 details the determination of complementary properties of unshaped refractory materials. These methods apply to test pieces prepared and stored following ISO 1927-5 and are complementary to property measurements addressed in ISO 1927-6. The standard adapts procedures originally designed for shaped refractory products, making them suitable for dense and insulating castables, as well as ramming materials, before and after firing.

This standard is essential for industries relying on accurate characterization of refractory materials that resist high temperatures, chemical exposure, and mechanical wear, ensuring materials meet performance criteria for structural integrity and durability.

Key Topics

• Test Piece Preparation: Methods require test pieces to be prepared according to ISO 1927-5, ensuring consistent sample conditioning before testing.

• Permeability to Gases: Utilizes test pieces dried and/or fired, then measured per ISO 8841 to assess gas permeability, a critical factor in refractory durability and performance.

• Thermal Shock Resistance: Measures material resistance to rapid temperature changes, using test pieces fired to standardized temperatures and tested following EN 993-11 guidelines.

• Thermal Conductivity: Determines heat transfer properties of both fired and unfired refractory materials using hot-wire methods (ISO 8894-1 and ISO 8894-2). Accurate assessment supports thermal efficiency and insulation design.

• Chemical Resistance: Includes tests for sulfuric acid resistance and resistance to carbon monoxide, based on ISO 8890, ISO 12676, and ISO 10060 protocols, essential for refractory materials exposed to chemical environments.

• Carbon-Containing Products and Abrasion Resistance: Specific procedures address refractory products with carbon content and their wear resistance at ambient temperature (ISO 16282).

• Test Reporting: Standardizes documentation to ensure transparency and reproducibility of test results.

Applications

EN ISO 1927-8:2012 is critical for:

• Steel and Metallurgical Industries: Ensuring refractory linings in furnaces and reactors perform reliably under thermal cycling, gas exposure, and chemical attack.

• Chemical Processing Plants: Verifying materials resist corrosive gases like sulfuric acid and carbon monoxide, extending equipment lifespan.

• Ceramics and Glass Manufacturing: Optimizing thermal insulation and reducing energy losses by selecting materials with appropriate thermal conductivity.

• Construction of Thermal Insulation Systems: Applying precise measurements of gas permeability and abrasion resistance to improve safety and durability.

• Quality Control Laboratories: Using standardized test methods to certify product compliance with required physical and chemical durability standards.

Related Standards

EN ISO 1927-8:2012 works in conjunction with several other standards to provide comprehensive refractory testing:

• ISO 1927-1: Introduction and classification of monolithic refractories
• ISO 1927-5: Preparation and treatment of test pieces
• ISO 1927-6: Measurement of physical properties (complementary to Part 8)
• ISO 8841: Determination of permeability to gases
• ISO 8890 and ISO 12676: Chemical resistance tests
• EN 993-11: Thermal shock resistance testing for shaped refractories
• ISO 8894-1 and ISO 8894-2: Thermal conductivity measurement by hot-wire methods
• ISO 10060: Test methods for refractory products containing carbon
• ISO 16282: Abrasion resistance at ambient temperature

By integrating these standards, EN ISO 1927-8:2012 ensures thorough characterization of unshaped refractory materials, supporting improvements in material selection, quality assurance, and operational safety in high-temperature industrial environments.

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Optimizing refractory material testing with EN ISO 1927-8:2012 ensures your unshaped refractory products meet stringent industry demands for thermal stability, chemical resistance, and mechanical durability, driving performance and longevity in critical applications.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2013
1DGRPHãþD
SIST EN 1402-8:2004
Neoblikovani ognjevzdržni izdelki - 8. del: Ugotavljanje komplementarnih lastnosti
(ISO 1927-8:2012)
Unshaped refractory materials - Part 8: Determination of complementary properties (ISO
1927-8:2012)
Ungeformte feuerfeste Erzeugnisse - Teil 8: Bestimmung zusätzlicher Eigenschaften
(ISO 1927-8:2012)
Produits réfractaires non façonnés - Partie 8: Détermination des caractéristiques
complémentaires (ISO 1927-8:2012)
Ta slovenski standard je istoveten z: EN ISO 1927-8:2012
ICS:
81.080 Ognjevzdržni materiali Refractories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 1927-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2012
ICS 81.080 Supersedes EN 1402-8:2003
English Version
Monolithic (unshaped) refractory products - Part 8:
Determination of complementary properties (ISO 1927-8:2012)
Produits réfractaires monolithiques (non façonnés) - Partie Ungeformte (monolithische) feuerfeste Erzeugnisse - Teil 8:
8: Détermination des caractéristiques complémentaires Bestimmung zusätzlicher Eigenschaften (ISO 1927-8:2012)
(ISO 1927-8:2012)
This European Standard was approved by CEN on 30 November 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 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 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, 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
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1927-8:2012: E
worldwide for CEN national Members.

Contents Page
Foreword . 3

Foreword
This document (EN ISO 1927-8:2012) has been prepared by Technical Committee ISO/TC 33 "Refractories"
in collaboration with Technical Committee CEN/TC 187 “Refractory products and materials” the secretariat of
which is held by BSI.
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 June 2013, and conflicting national standards shall be withdrawn at
the latest by June 2013.
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 responsible for identifying any or all such patent rights.
This document supersedes EN 1402-8:2003.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 1927-8:2012 has been approved by CEN as a EN ISO 1927-8:2012 without any modification.

INTERNATIONAL ISO
STANDARD 1927-8
First edition
2012-12-01
Monolithic (unshaped) refractory
products —
Part 8:
Determination of complementary
properties
Produits réfractaires monolithiques (non façonnés) —
Partie 8: Détermination des caractéristiques complémentaires
Reference number
ISO 1927-8:2012(E)
©
ISO 2012
ISO 1927-8:2012(E)
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the
address below or ISO’s member body in the country of the requester.
ISO copyright office
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Tel. + 41 22 749 01 11
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Published in Switzerland
ii © ISO 2012 – All rights reserved

ISO 1927-8:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Determination of permeability to gases . 2
4.1 Principle . 2
4.2 Test pieces . 2
4.3 Procedure . 2
5 Determination of the resistance to thermal shock . 2
5.1 Principle . 2
5.2 Test pieces . 2
5.3 Procedure . 2
6 Determination of thermal conductivity . 3
6.1 Principle . 3
6.2 Test pieces . 3
6.3 Procedure . 3
7 Determination of sulfuric acid resistance . 3
7.1 Principle . 3
7.2 Test pieces . 3
7.3 Procedure . 3
8 Tests for products containing carbon . 3
8.1 Principle . 3
8.2 Test pieces . 4
8.3 Procedure . 4
9 Determination of the resistance to carbon monoxide . 4
10 Determination of resistance to abrasion at ambient temperature .4
11 Test report . 4
ISO 1927-8:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechn
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