National foreword

This British Standard is the UK implementation of EN 12390‑13:2021. It supersedes BS EN 12390‑13:2013, which is withdrawn.

The UK participation in its preparation was entrusted to Technical Committee B/517/1, Concrete production and testing.

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 2021.

This European Standard was approved by CEN on 7 June 2021.

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, Turkey and United Kingdom.

European foreword

This document (EN 12390‑13:2021) 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 2022, and conflicting national standards shall be withdrawn at the latest by January 2022.

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 12390‑13:2013.

The following amendments have been made in comparison to the former edition:

upper limit of lower stress increased to prevent sample unloading when testing low strength concrete;
change to the loading profile in Method B.

This document is based on an extensive investigation and comparison of existing National Standards: ASTM, BS, DIN, ISO, NORD TEST and UNI followed by the analysis of a test programme involving five laboratories carried out by UNI.

This document is one of a series on testing concrete.

EN 12390 , Testing hardened concrete, consists of the following parts:

Part 1: Shape, dimensions and other requirements for specimens and moulds
Part 2: Making and curing specimens for strength tests
Part 3: Compressive strength of test specimens
Part 4: Compressive strength – Specification for testing machines
Part 5: Flexural strength of test specimens
Part 6: Tensile splitting strength of test specimens
Part 7: Density of hardened concrete
Part 8: Depth of penetration of water under pressure
Part 10: Determination of the carbonation resistance of concrete at atmospheric levels of carbon dioxide
Part 11: Determination of the chloride resistance of concrete, unidirectional diffusion
Part 12: Determination of the potential carbonation resistance of concrete: Accelerated carbonation method
Part 13: Determination of secant modulus of elasticity in compression
Part 14: Semi-adiabatic method for the determination of heat released by concrete during its hardening process
Part 15: Adiabatic method for the determination of heat released by concrete during its hardening process
Part 16: Determination of shrinkage of concrete
Part 17: Determination of creep of concrete in compression
Part 18: Determination of chloride migration coefficient (in preparation)

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, Turkey and the United Kingdom.

1 Scope

This document specifies the method for the determination of the secant modulus of elasticity in compression of hardened concrete on test specimens which can be cast or taken from a structure.

The test method allows the determination of two secant moduli of elasticity: the initial modulus, E_C,0 measured at first loading and the stabilized modulus, E_C,S measured after three loading cycles.

Two different test methods are given. The first (Method A) is for determination of both initial and stabilized moduli, the second (Method B) is for determination of stabilized modulus only.

2 Normative references

3 Terms, definitions, symbols and abbrivations

3.1 Terms and definitions

3.2 Symbols and abbreviations

4 Principle

5 Apparatus

5.1 Test machine

5.2 Instrumentation

5.3 Gauge length

6 Test specimens

6.1 Shape and dimensions of specimens

6.2 Curing, storage and conditioning

7 Method

7.1 Specimen instrumentation and positioning

7.2 Determination of compressive strength

7.3 Determination of secant modulus of elasticity

8 Calculation of secant modulus of elasticity

8.1 Initial secant modulus of elasticity (Method A)

8.2 Stabilized secant modulus of elasticity (Method A and B)

9 Test report

10 Precision

Bibliography

BS EN 12390-13:2021

Testing hardened concrete - Determination of secant modulus of elasticity in compression

Current

Published:

31 Aug 2021