This document specifies the scheme for the evaluation of conformity of fly ash according to EN 450-1:2005.
The document provides technical rules for the production control by the producer, including autocontrol testing
of samples. It also provides rules for actions to be followed in the event of non-conformity, the procedure for
the certification of conformity and requirements for dispatching centres.
Guidance
EN 450-2 deals with the evaluation of conformity of fly ash submitted for certification. It deals in particular
with cases where “further testing” of the product is undertaken, as is the case for attestation system 1 +
under the Construction Products Directive. The product for which EN 450-2 applies is defined in
EN 450-1:2005 as fly ash for the production of concrete which consists of a fine powder of mainly
spherical, glassy particles, derived from burning of pulverised coal, with or without co-combustion
materials, which has pozzolanic properties.
BS PD CEN/TR 15840:2009 Referenced Document
EN 196-1 Methods of testing cement - Part 1: Determination of strength*, 2016-04-01 Update
EN 196-7 Methods of testing cement - Part 7: Methods of taking and preparing samples of cement*, 2024-04-19 Update
EN 450-1:2005 Fly ash for concrete - Part 1: Definition@ specifications and conformity criteria (Incorporates Amendment A1: 2007)
EN 450-2:2005 Fly ash for concrete - Part 2: Conformity evaluation
EN 451-2 Method of testing f ly ash - Part 2: Determination of fineness by wet sieving*, 2017-05-01 Update
BS PD CEN/TR 15840:2009 history
2009BS PD CEN/TR 15840:2009 Evaluation of conformity of fly ash for concrete — Guidelines for the application of EN 450-2