1 Scope
This document specifies requirements for volcanic lava, as supplied for blast-cleaning
processes. It specifies ranges of particle sizes and values for apparent density,
Mohs hardness, moisture content, conductivity of aqueous extract and water-soluble
chlorides.
The requirements specified in this document apply to abrasives supplied in “new” condition
only. They do not apply to abrasives either during or after use.
Test methods for non-metallic blast-cleaning abrasives are given in the various parts
of ISO 11127 series.
NOTE Although this document has been developed specifically to meet requirements for the
preparation of steelwork, the properties specified will generally be appropriate for
use when preparing other material surfaces, or components, using blast-cleaning techniques.
These techniques are described in ISO 8504-2.