What is BS 8615 ‑ 1 - Specification for pozzolanic materials about?
BS 8615 is the European standard on pozzolanic materials used in cement for building construction.
BS 8615 ‑ 1 is the first part of the BS 8615 series of documents that specifies requirements for the production, chemical composition, mechanical and physical properties of pozzolanic materials for use in combination with Portland cement class 42.5 N or greater, conforming to BS EN 197-1:2011 , as a component of concrete, mortar or grout.