SIST EN ISO 8840:2024
(Main)Refractory materials - Determination of bulk density of granular materials (grain density) (ISO 8840:2021)
Refractory materials - Determination of bulk density of granular materials (grain density) (ISO 8840:2021)
As per ISO document i.e.
This document specifies three methods for the determination of the bulk density of granular
refractory materials (grain density) having a grain size larger than 2 mm:
— Method 1: mercury method with vacuum;
— Method 2: arrested water absorption method;
— Method 3: vacuum method with spin dryer option according to ISO 5017.
Method 1 is intended as the reference method.
NOTE Depending on the nature of the material tested, the three methods can give different results.
Any statement of the value of a bulk density can therefore be accompanied by an indication of the
method used or to be used in case of dispute.
The same method can be used for the determination of the volume of the sample, for selecting and
preparing the sample, for
calculating the bulk density and for presenting the test report.
Feuerfeste Erzeugnisse - Bestimmung der Rohdichte von körnigem Gut (Korndichte) (ISO 8840:2021)
Dieses Dokument legt drei Verfahren zur Bestimmung der Rohdichte von körnigen feuerfesten Werkstoffen (Korndichte) mit einer Korngröße größer als 2 mm fest:
Verfahren 1: Quecksilber Verdrängungsverfahren unter Vakuum;
Verfahren 2: Verfahren mit gestoppter Wasseraufnahme;
Verfahren 3: Vakuumverfahren mit Zentrifugen Option nach ISO 5017.
Verfahren 1 ist als Referenzverfahren vorgesehen.
ANMERKUNG Abhängig von der Art des geprüften Werkstoffs können die drei Verfahren zu unterschiedlichen Ergeb¬nissen führen. Jedem angegebenen Wert einer Rohdichte kann daher eine Angabe des angewendeten Verfahrens oder des im Streitfall anzuwendenden Verfahrens beigefügt werden.
Das gleiche Verfahren kann für die Bestimmung des Volumens der Probe, für die Auswahl und Vorbereitung der Probe, für die Berechnung der Rohdichte und für die Erstellung des Prüfberichts angewendet werden.
Matériaux réfractaires - Détermination de la masse volumique apparente des matériaux en grains (masse volumique des grains) (ISO 8840:2021)
Le présent document spécifie trois méthodes permettant de déterminer la masse volumique apparente des matériaux réfractaires en grains (masse volumique des grains) dont la granulométrie est supérieure à 2 mm:
— Méthode 1: méthode au mercure sous vide;
— Méthode 2: méthode par arrêt de l’absorption d’eau;
— Méthode 3: méthode sous vide avec option d’essorage conformément à l’ISO 5017.
La méthode 1 est la méthode de référence.
NOTE Selon la nature du matériau soumis à l’essai, les trois méthodes peuvent donner des résultats différents. Tout énoncé de la valeur d’une masse volumique apparente peut par conséquent s’accompagner d’une mention de la méthode utilisée ou à utiliser en cas de litige.
La même méthode peut être utilisée pour déterminer le volume de l’échantillon, pour choisir et préparer l’échantillon, pour calculer sa masse volumique apparente et pour présenter le rapport d’essai.
Ognjevzdržni materiali - Ugotavljanje prostorninske mase drobljenih (zrnatih )materialov (gostota zrn) (ISO 8840:2021)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2024
Ognjevzdržni materiali - Ugotavljanje prostorninske mase drobljenih (zrnatih
)materialov (gostota zrn) (ISO 8840:2021)
Refractory materials - Determination of bulk density of granular materials (grain density)
(ISO 8840:2021)
Feuerfeste Erzeugnisse - Bestimmung der Rohdichte von körnigem Gut (Korndichte)
(ISO 8840:2021)
Matériaux réfractaires - Détermination de la masse volumique apparente des matériaux
en grains (masse volumique des grains) (ISO 8840:2021)
Ta slovenski standard je istoveten z: EN ISO 8840:2024
ICS:
81.080 Ognjevzdržni materiali Refractories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 8840
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2024
EUROPÄISCHE NORM
ICS 81.080 Supersedes EN 993-18:2002
English Version
Refractory materials - Determination of bulk density of
granular materials (grain density) (ISO 8840:2021)
Matériaux réfractaires - Détermination de la masse Feuerfeste Erzeugnisse - Bestimmung der Rohdichte
volumique apparente des matériaux en grains (masse von körnigem Gut (Korndichte) (ISO 8840:2021)
volumique des grains) (ISO 8840:2021)
This European Standard was approved by CEN on 26 May 2024.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8840:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 8840:2021 has been prepared by Technical Committee ISO/TC 33 "Refractories” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 8840:2024 by
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 December 2024, and conflicting national standards
shall be withdrawn at the latest by December 2024.
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 supersedes EN 993-18:2002.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 8840:2021 has been approved by CEN as EN ISO 8840:2024 without any modification.
INTERNATIONAL ISO
STANDARD 8840
Second edition
2021-09
Refractory materials — Determination
of bulk density of granular materials
(grain density)
Matériaux réfractaires — Détermination de la masse volumique
apparente des matériaux en grains (masse volumique des grains)
Reference number
ISO 8840:2021(E)
©
ISO 2021
ISO 8840:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
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ii © ISO 2021 – All rights reserved
ISO 8840:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Sampling . 2
6 Preparation, number and test size of samples . 2
6.1 Preparation of samples . 2
6.2 Number of samples . 2
6.3 Mass of test samples . 2
7 Determination of mass of test sample . 2
8 Determination of volume of test sample — Method 1: Mercury method with vacuum .3
8.1 Principle . 3
8.2 Apparatus . 4
8.3 Determination of mass of empty vacuum pycnometer . 5
8.4 Determination of mass of pycnometer filled with mercury . 6
8.5 Determination of mass of pycnometer containing test sample and filled with mercury . 6
8.6 Calculation of volume of test sample . 6
9 Determination of volume of test sample — Method 2: Arrested water absorption method .7
9.1 Apparatus . 7
9.2 Determination of volume of test sample . 7
9.3 Calculation of results . 8
10 Determination of bulk density of test sample — Method 3: Vacuum method with
spin dryer option . 8
10.1 Principle . 8
10.2 Apparatus and materials . 8
10.3 Procedure . 9
10.3.1 Determination of the mass of dry test piece (m ). 9
10.3.2 Soaking of the test sample .10
10.3.3 Determination of the apparent mass of the immersed test sample (m )
and the mass of the soaked test sample (m ) .10
10.4 Calculation of results .12
10.4.1 Calculation of the volume of the test sample (V ) .12
R
10.4.2 Calculation of the bulk density of the test sample (ρ ) .12
R
10.5 Precision and bias .12
10.5.1 Interlaboratory data .12
10.5.2 Precision.12
10.5.3 Bias .13
11 Test report .13
Bibliography .14
ISO 8840:2021(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
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the
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