National foreword

This British Standard is the official English language version of EN 450‑2:2005. Together with BS EN 450‑1:2004, this document supersedes BS EN 450:1995.

The UK participation in its preparation was entrusted by Technical Committee B/516, Cement and lime, to Subcommittee B/516/101, Additions for concrete, which has the responsibility to:

aid enquirers to understand the text;
present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed;
monitor related international and European developments and promulgate them in the UK.

A list of organizations represented on this subcommittee can be obtained on request to its secretary.

Additional information

The term “fly ash” used in this standard covers pulverized-fuel ash (PFA) which is the more precise term for fly ashes produced from electricity generating power stations burning pulverized hard coals and which has been in common use in the UK for many years.

This British Standard specifies the scheme for the evaluation of conformity of fly ash as an addition in concrete, including certification of conformity.

In doing so it complements BS EN 450‑1:2005, which, when implemented in the UK, will make appropriate reference to this British Standard.

Cross-references

The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard does not of itself confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 5 May 2005

Summary of pages

This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 68, an inside back cover and a back cover.

The BSI copyright notice displayed in this document indicates when the document was last issued.

This European Standard was approved by CEN on 22 December 2004.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Foreword

This document (EN 450‑2:2005) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products”, the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2005, and conflicting national standards shall be withdrawn at the latest by August 2006.

This document supersedes EN 450:1994.

This document includes a Bibliography.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

1 Scope

This document specifies the scheme for the evaluation of conformity of fly ash according to EN 450‑1.

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.

2 Normative references

3 Terms and definitions

3.1 Specific definitions

3.2 General definitions

4 Tasks for the producer

4.1 Factory production control

4.2 Internal quality control

4.3 Autocontrol testing of samples

5 Tasks for the certification body

5.1 General

5.2 Surveillance, assessment and acceptance of the production control

5.3 Evaluation of the results of autocontrol testing of samples

5.4 Audit testing of samples taken at the production plant/depot and initial type testing

5.5 Initial inspection of the production plant and the production control

5.6 Evaluation of test results during the initial period

6 Actions in the event of non-conformity

6.1 Actions to be taken by the producer

6.2 Actions to be taken by the certification body

7 Procedure for third party certification of conformity

8 Certificate of conformity and conformity mark

8.1 Indication of conformity

8.2 Certificate of conformity

8.3 Conformity mark

9 Requirements for dispatching centres

9.1 General requirements

9.2 Tasks for the intermediary

9.3 Tasks for the third party

Bibliography

BS EN 450-2:2005

Fly ash for concrete - Conformity evaluation

Current

Published:

5 May 2005