What is this standard about?
This British Standard 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. It also specifies requirements for marking, provision of information and conformity criteria for the manufacture’s autocontrol system.
This British Standard covers the following types of pozzolana:
a) natural pozzolana (P) as defined in BS EN 197-1:2011, 5.2.3.2; and
b) natural calcined pozzolana (Q), (excluding high reactivity natural calcined pozzolana conforming to BS 8615-2), as defined in BS EN 197-1:2011, 5.2.3.3.