EN 993-18:2002

Methods of test for dense shaped refractory products - Part 18: Determination of bulk density of granular materials by the water method with vacuum

This European standard specifies a method based on water absorption with vacuum for the determination of the bulk density of granular refractory materials (grain density) having a grain size larger than 2 mm. NOTE: This method is proposed as an alternative to the method based on mercury displacement with vacuum described in EN 993-17 which is to be used as the referee method because of its reproducibility. However, mercury is known to be a hazardous substance and the method in this EN is recommended for all routine purposes.

Prüfverfahren für dichte geformte feuerfeste Erzeugnisse - Teil 18: Bestimmung der Rohdichte an körnigem Gut nach dem Wasserverdrängungsverfahren unter Vakuum

Diese Europäische Norm legt ein Verfahren zur Bestimmung der Rohdichte von körnigen feuerfesten Werkstoffen (Korndichte) mit einer Korngröße größer als 2 mm nach dem Wasser-Verdrängungsverfahren unter Vakuum fest. Anmerkung: Dieses Verfahren wird als Alternative zum Verfahren mit Quecksilberverdrängung unter Vakuumbedingungen vorgeschlagen, das in EN 993-17 festgelegt ist und das aufgrund seiner Reproduzierbarkeit als Schiedsverfahren zu verwenden ist.

Méthodes d'essai pour produits réfractaires façonnés denses - Partie 18: Détermination de la masse volumique apparente des matériaux en grains par la méthode à l'eau sous vide

La présente partie de la Norme européenne spécifie une méthode basée sur l'absorption d'eau sous vide pour déterminer la masse volumique apparente des matériaux réfractaires en grains (masse volumique des grains) de granulométrie supérieure à 2 mm.
NOTE 1   Cette méthode est proposée comme solution alternative à la méthode basée sur le déplacement de mercure sous vide décrite dans l'EN 993-17, qui doit être utilisée comme méthode de référence en raison de sa reproductibilité. Cependant, le mercure est connu comme étant une substance dangereuse et la méthode décrite dans cette norme européenne est recommandée pour tous les travaux de routine. Il faut noter que, selon la nature du matériau soumis à essai, les deux méthodes peuvent donner des résultats différents.
NOTE 2   Pour les matériaux sensibles au contact de l'eau, un liquide organique peut être utilisé. Le liquide d'immersion doit rester stable à une pression supérieure à la pression absolue atteinte lors de l'essai. Exemple, la paraffine distillée peut être utilisée pour les matériaux hydratables.

Metode za preskušanje gostih oblikovanih ognjevzdržnih izdelkov - 18. del: Ugotavljanje prostorninske mase podrobljenih materialov z metodo z vodo v vakuumu

General Information

• Status: Withdrawn
• Publication Date: 20-Aug-2002
• Withdrawal Date: 04-Jun-2024
• ICS: 81.080 - Refractories
• Technical Committee: CEN/TC 187 - Refractory products and materials
• Drafting Committee: CEN/TC 187/WG 1 - Dense shaped refractory products
• Ref Project: SIST EN 993-18:2002 - Methods of test for dense shaped refractory products - Part 18: Determination of bulk density of granular materials by the water method with vacuum

Relations

• Replaced By: EN ISO 8840:2024 - Refractory materials - Determination of bulk density of granular materials (grain density) (ISO 8840:2021)
• Effective Date: 22-Nov-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2002
Metode za preskušanje gostih oblikovanih ognjevzdržnih izdelkov - 18. del:
Ugotavljanje prostorninske mase podrobljenih materialov z metodo z vodo v
vakuumu
Methods of test for dense shaped refractory products - Part 18: Determination of bulk
density of granular materials by the water method with vacuum
Prüfverfahren für dichte geformte feuerfeste Erzeugnisse - Teil 18: Bestimmung der
Rohdichte an körnigem Gut nach dem Wasserverdrängungsverfahren unter Vakuum
Méthodes d'essai pour produits réfractaires façonnés denses - Partie 18: Détermination
de la masse volumique apparente des matériaux en grains par la méthode a l'eau sous
vide
Ta slovenski standard je istoveten z: EN 993-18:2002
ICS:
81.080 Ognjevzdržni materiali Refractories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 993-18
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2002
ICS 81.080
English version
Methods of test for dense shaped refractory products - Part 18:
Determination of bulk density of granular materials by the water
method with vacuum
Méthodes d'essai pour produits réfractaires façonnés Prüfverfahren für dichte geformte feuerfeste Erzeugnisse -
denses - Partie 18: Détermination de la masse volumique Teil 18: Bestimmung der Rohdichte an körnigem Gut nach
apparente des matériaux en grains par la méthode à l'eau dem Wasserverdrängungsverfahren unter Vakuum
sous vide
This European Standard was approved by CEN on 5 July 2002.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 993-18:2002 E
worldwide for CEN national Members.

Contents
page
Foreword.3
1 Scope .3
2 Normative references .4
3 Terms and definitions.4
4 Principle.4
5 Apparatus .4
6 Test samples .5
6.1 Preparation of test samples.5
6.2 Number of test samples .5
6.3 Mass of test samples.5
7 Method .6
7.1 Determination of the mass of dry test sample (m ).6
7.2 Impregnation of the test sample.6
7.3 Determination of the apparent mass of the immersed test sample (m ) and the mass of the
impregnated test sample (m ).6
8 Calculation of results .7
8.1 Calculation of the volume of the test sample (V ).7
R
8.2 Calculation of the bulk density of the test sample (
).7
R
9 Test report .8
Bibliography .11
Foreword
This document (EN 993-18:2002) has been prepared 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 February 2003, and conflicting national standards shall be withdrawn at the latest
by February 2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland and the United Kingdom.
EN 993 'Methods of test for dense shaped refractory products' consists of 20 Parts:
Part 1: Determination of bulk density, apparent porosity and true porosity.
Part 2: Determination of true density.
Part 3: Test methods for carbon-containing refractories.
Part 4: Determination of permeability to gases.
Part 5: Determination of cold crushing strength.
Part 6: Determination of modulus of rupture at ambient temperature.
Part 7: Determination of modulus of rupture at elevated temperatures.
Part 8: Determination of refractoriness-under-load.
Part 9: Determination of creep in compression.
Part 10: Determination of permanent change in dimensions on heating.
Part 11: Determination of resistance to thermal shock (ENV).
Part 12: Determination of pyrometric cone equivalent.
Part 13: Specification for pyrometric cones.
Part 14: Determination of thermal conductivity (hot wire, cross-array).
Part 15: Determination of thermal conductivity (hot wire, parallel).
Part 16: Determination of resistance to acids.
Part 17: Determination of bulk density of granular material (mercury method).
Part 18: Determination of bulk density of granular material (water method).
Part 19: Determination of resistance to thermal expansion.
Part 20: Determination of resistance to abrasion at ambient temperature.
1 Scope
This European Standard specifies a method based on water absorption with vacuum for the determination of the bulk
density of granular refractory materials (grain bulk density) having a grain size greater than 2 mm.
NOTE 1 This method is proposed as an alternative to the method based on mercury displacement with vacuum described in
EN 993-17 which is to be used as the reference method because of its reproducibility. However, mercury is known to be a
hazardous su
...