National foreword

This British Standard is the UK implementation of EN 480‑15:2023. It supersedes BS EN 480‑15:2013, which is withdrawn.

The UK participation in its preparation was entrusted to Technical Committee B/517/3, Admixtures.

A list of organizations represented on this committee can be obtained on request to its committee manager.

Contractual and legal considerations

This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BSI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law.

This publication is provided as is, and is to be used at the recipient’s own risk.

The recipient is advised to consider seeking professional guidance with respect to its use of this publication.

This publication is not intended to constitute a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2023.

This European Standard was approved by CEN on 28 May 2023.

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions.

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

European foreword

This document (EN 480‑15:2023) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products”, the secretariat of which is held by SN.

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 January 2024, and conflicting national standards shall be withdrawn at the latest by January 2024.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 480‑15:2013.

This document has been drafted by Subcommittee 3 (SC 3) of CEN/TC 104 “Admixtures for concrete, mortar and grout”.

This document is part of the EN 480 series, with the title Admixtures for concrete, mortar and grout — Test methods, which comprises the following parts:

Part 1: Reference concrete and reference mortar for testing
Part 2: Determination of setting time
Part 4: Determination of bleeding of concrete
Part 5: Determination of capillary absorption
Part 6: Infrared analysis
Part 8: Determination of the conventional dry material content
Part 10: Determination of water soluble chloride content
Part 11: Determination of air void characteristics in hardened concrete
Part 12: Determination of the alkali content of admixtures
Part 13: Reference masonry mortar for testing mortar admixtures
Part 14: Determination of the effect on corrosion susceptibility of reinforcing steel by potentiostatic electro-chemical test
Part 15: Reference concrete and method for testing viscosity modifying admixtures (the present document)

This document is intended to be used together with the other standards of the EN 480 series and for testing admixtures in accordance with the EN 934 series of standards.

The main changes compared with the previous edition are listed below:

identification of the relevant test method standard for the determination of the density of fresh concrete in Table 2;
editorial changes.

Any feedback and questions on this document should be directed to the users’ national standards body. A complete listing of these bodies can be found on the CEN website.

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

1 Scope

This document specifies the constituent materials, the composition and the mix procedure to produce a reference concrete with a prescribed consistency and segregated portion for testing viscosity modifying admixtures as defined in EN 934‑2. It also describes how to determine the requirements for the test mix in comparison with the control mix.

2 Normative references

3 Terms and definitions

4 Constituent materials

4.1 Cement

4.2 Aggregate

4.3 Mixing water

5 Reference concrete

6 Preparation of reference concrete

6.1 Mix proportions

6.2 Mixing and testing

7 Test report

BS EN 480-15:2023

Admixtures for concrete, mortar and grout. Test methods - Reference concrete and method for testing viscosity modifying admixtures

Current

Published:

31 Aug 2023