DIN EN 450-1:2012-10

This European Standard specifies requirements for the chemical and physical properties as well as quality control procedures for siliceous fly ash, as defined in 3.2, for use as a type II addition for production of concrete conforming to EN 206-1. Fly ash according to this document may also be used in mortars and grouts. Fly ash produced with other types or higher percentages of co-combustion materials than those provided for in clause 4 is outside the scope of this European Standard. It is beyond the scope of this European Standard to specify provisions governing the practical application of fly ash in the production of concrete, that is requirements concerning composition, mixing, placing, curing etc. of concrete containing fly ash. Regarding such provisions, reference is made to other European or national standards for concrete, such as EN 206-1. The following modifications have been made with respect to DIN EN 450-1:2008-05: a) extension of the permissible content of solid co-combustion materials; b) extension of the permissible content of liquid and gaseous co-combustion materials; c) fixed limits for loss on ignition; d) incorporation of the specifications from EN 450-1/A1:2007; e) general editorial revision. The committee responsible for this standard is NA 005-07-24 AA "Betonzusatzstoffe (SpA zu CEN/TC 104/WG 4, SpA zu CEN/TC 104/WG 9, SpA zu CEN/TC 104/WG 15)" ("Additions for concrete (national mirror committee for CEN/TC 104/WG 4, CEN/TC 104/WG 9, CEN/TC 104/WG 15)") at DIN.