oSIST prEN 12390-6:2022

SLOVENSKI STANDARD
01-september-2022
Preskušanje strjenega betona - 6. del: Natezna razcepna trdnost preskušancev
Testing hardened concrete - Part 6: Tensile splitting strength of test specimens
Prüfung von Festbeton - Teil 6: Spaltzugfestigkeit von Probekörpern
Essai pour béton durci - Partie 6 : Détermination de la résistance en traction par fendage
d’éprouvettes
Ta slovenski standard je istoveten z: prEN 12390-6
ICS:
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2022
ICS 91.100.30 Will supersede EN 12390-6:2009
English Version
Testing hardened concrete - Part 6: Tensile splitting
strength of test specimens
Essais pour béton - Partie 6 : Détermination de la Prüfung von Festbeton - Teil 6: Spaltzugfestigkeit von
résistance en traction par fendage d'éprouvettes Probekörpern
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 104.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12390-6:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 5
5 Apparatus . 5
5.1 Testing machine . 5
5.2 Jig (optional) . 6
5.3 Packing strips . 6
6 Test specimens . 7
6.1 General . 7
6.2 Adjustment of test specimens . 7
6.3 Marking . 7
7 Procedure. 7
7.1 Specimen preparation . 7
7.2 Specimen positioning . 7
7.3 Loading. 7
7.4 Examination of specimens . 8
8 Expression of results . 8
9 Test report . 9
10 Precision . 9
Annex A (normative) Determination of tensile splitting strength using cubic or prismatic
specimens .10
Bibliography .13

European foreword
This document (prEN 12390-6:2022) has been prepared by Technical Committee CEN/TC 104 “Concrete
and related products”, the secretariat of which is held by SN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12390-6:2009.
The main change from the previous edition of this document has been to include the testing of cored
specimens. The reference specimen for the test is a moulded cylindrical specimen.
This document is one of a series concerned with 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
— Part 19: Determination of resistivity (in preparation)
Introduction
This test method was one of a number of test methods examined in a laboratory inter-comparison
programme. The work was partly funded by the EC under the Measurement and Testing programme,
contract MAT1-CT94-0043. The programme and other references showed the following:
a) Tensile splitting strengths measured between the normal plane platens of testing machines gave the
same results as those using the special curved platens, originally described in ISO 4108:1980 [1].
Although these curved platens have been optionally retained in this document, they are not
necessary for the measurement.
b) The material used for the packing strips affects the apparent tensile strength measured. This has led
to the decision to standardize on hardboard strips, since they provided the lowest standard
deviations.
c) The apparent tensile strength measured depends upon the shape and size of the test specimen used:
1) cubes gave higher measured tensile strengths than moulded cylinders, by approximately 10 %;
2) 150 mm cubes gave lower measured tensile strengths than 100 mm cubes;
3) the effect of moulded cylinder size on measured tensile strength was not found to be significant,
possibly due to the variability of the data.
As a result of these conclusions from the laboratory programme, this document restricts the
measurement of tensile splitting strength to cylindrical specimens used with hardboard packing strips,
which is the reference method. However, as some countries still test cubical or prismatic specimens, their
use has been retained in Annex A. In cases of dispute, the reference method is the use of moulded
cylinders of 150 mm diameter and 300 mm length.
It is recognized good practice to include measurement of density prior to the determination of tensile
splitting strength, as a check on compaction.
1 Scope
This document specifies the method for the determination of the tensile splitting strength of test
speci
...