A specialist material, produced from pulverised fuel ash and used where the weight of the aggregate needs to be kept to a minimum (normally form concrete production).
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Aggregate of low density used to produce lightweight masonry, lightweight mortar, and lightweight grout, and includes expanded shale, clay, slate, and slag, pumice, volcanic cinders, scoria, tuff, and the end products of coal or coke combustion
Found on
http://www.masoncontractors.org/aboutmasonry/masonryglossary/
Natural or manufactured aggregate of low density, such as expanded or sintered clay, shale, slate, diatomaceous shale, perlite, vermiculite, slag, natural pumice, volcanic cinders, diatomite, sintered fly ash or industrial cinders.
Found on
https://www.encyclo.co.uk/local/22191
No exact match found.
