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ISO 8840:2021

Refractory materials — Determination of bulk density of granular materials (grain density)
14 sht 2021

General information

60.60     14 sht 2021

ISO

ISO/TC 33

International Standard

81.080  

anglisht   frëngjisht  

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 8840:1987

NOW

PUBLISHED
ISO 8840:2021
60.60 Standard published
14 sht 2021

National adoptions

Materiale zjarrdurues - Përcaktimi i dendësisë së dukshme të materialeve granulare (dendësia e kokrrizave) (ISO 8840:2021)

60.60 Standard published

DPS/KT 67 më tepër