EN 12594:2024

SLOVENSKI STANDARD
oSIST prEN 12594:2023
01-junij-2023
Bitumen in bitumenska veziva - Priprava preskusnih vzorcev
Bitumen and bituminous binders - Preparation of test samples
Bitumen und bitumenhaltige Bindemittel - Vorbereitung von Untersuchungsproben
Bitumes et liants bitumineux - Préparation des échantillons d'essai
Ta slovenski standard je istoveten z: prEN 12594
ICS:
75.140 Voski, bitumni in drugi naftni Waxes, bituminous materials
proizvodi and other petroleum products
91.100.50 Veziva. Tesnilni materiali Binders. Sealing materials
oSIST prEN 12594:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 12594:2023
oSIST prEN 12594:2023
DRAFT
EUROPEAN STANDARD
prEN 12594
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2023
ICS Will supersede EN 12594:2014
English Version
Bitumen and bituminous binders - Preparation of test
samples
Bitumes et liants bitumineux - Préparation des Bitumen und bitumenhaltige Bindemittel -
échantillons d'essai Vorbereitung von Untersuchungsproben
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 336.
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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12594:2023 E
worldwide for CEN national Members.

oSIST prEN 12594:2023
prEN 12594:2023 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 5
5 Reagents and materials . 5
6 Apparatus . 5
7 Procedure for preparation of test samples . 6
7.1 General . 6
7.2 Solid or semi-solid samples . 6
7.2.1 Samples up to one litre . 6
7.2.2 Samples greater than one litre . 7
7.3 Soft bitumen, fluxed or cut-back binders . 7
7.4 Bituminous emulsions . 8
7.4.1 General . 8
7.4.2 Test samples for testing for sieve residue according to EN 1429 and settling
tendency according to EN 12847 . 8
7.4.3 Test samples for other tests . 9
7.5 Samples obtained from a specific procedure . 9
8 Test report .10
Bibliography .11

oSIST prEN 12594:2023
prEN 12594:2023 (E)
European foreword
This document (prEN 12594:2023) has been prepared by Technical Committee CEN/TC 336 “Bituminous
binders”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12594:2014.
In comparison with the previous edition, the main technical changes are:
— definitions of laboratory sample and test sample have been reviewed;
— definitions of test specimen and of melting have been added;
— reference to most reageants and materials have been deleted as already covered in other standards;
— description of apparatus has been completed;
— procedure in paragraph 7 has been modified to ensure consistency with test standards and to better
precise conditions in particular heating time and heating temperatures;
— recommendation on storage of emulsions have been added.
oSIST prEN 12594:2023
prEN 12594:2023 (E)
1 Scope
This document specifies a method for preparing samples of bitumen and bituminous binders in order to
test their properties.
WARNING — The use of this document can involve hazardous materials, operations and equipment. This
document does not purport to address all of the safety problems associated with its use. It is the
responsibility of the user of this document to establish appropriate safety and health practices and to
determine the applicability of regulatory limitations prior to use.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 58, Bitumen and bituminous binders - Sampling bituminous binders
EN 1425, Bitumen and bituminous binders - Characterization of perceptible properties
EN 1427, Bitumen and bituminous binders - Determination of the softening point - Ring and Ball method
EN 1429:2013, Bitumen and bituminous binders - Determination of residue on sieving of bituminous
emulsions, and determination of storage stability by sieving
EN 12847, Bitumen and bituminous binders - Determination of settling tendency of bituminous emulsions
EN ISO 3696:1995, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)
ISO 565:1990, Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal
sizes of openings
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org
3.1
laboratory sample
sample of bitumen or bituminous binder incoming into laboratory for tests
Note 1 to entry: Sampling is conducted according to EN 58.
Note 2 to entry: Incoming material containing bitumen or bituminous binders, e.g. asphalt mixtures, are taken
according to other procedures than the ones described in EN 58; therefore, they are here not used with the term
laboratory sample.
Note 3 to entry: The laboratory sample may be a spot sample, a composite sample, or a part thereof (a divided
sample).
oSIST prEN 12594:2023
prEN 12594:2023 (E)
3.2
test sample
sample of bituminous binder produced by treatment or subdivision of a laboratory sample for individual
testing
Note 1 to entry: the same test sample can be treated to prepare various tests in parallel; some test methods need
preparation of test specimen, while for others a portion of the test sample will be used directly.
3.3
test specimen
specimen for specific tests prepared from a test sample
Note 1 to entry: In principle, details on the test specimen preparation are described in the respective test
standards, where applicable, and are not within the scope of EN 12594. However, EN 12594 is covering common
areas like temperatures or duration of preparation.
3.4
melting
heating the sample to lower its viscosity and ensure homogeneity while preparing test samples and test
specimen
4 Principle
Incoming laboratory samples are prepared for testing depending on their types and their sizes, in as-is
state.
5 Reagents and materials
Only reagents of recognized standard analytical grade and water conforming to grade 3 of
EN ISO 3696:1995 shall be used.
6 Apparatus
6.1 General
Usual laboratory apparatus and glassware, together with the following.
6.2 Ventilated laboratory oven with a maximum permissible measurement error of ± 5 °C, checked
at midpoint and working space at suitable intervals.
6.3 Indirect heating apparatus, e.g. heating jacket, oil bath with thermometer or equivalent
6.4 Container of appropriate materials (i.e heat resistant and not interacting with the sample) to heat
the sample.
6.5 Lid or aluminium foil for container (6.4).
6.6 Any appropriate stirrer, e.g. manual (such as spatula), mechanical equipped with a propeller or
magnetic.
6.7 Metal sieve, mesh size 0,500 mm, as described in ISO 565:1990.
6.8 Test sample container of appropriate material with a lid or other closure, or glass conical flask
with a ground glass stopper.
oSIST prEN 12594:2023
prEN 12594:2023 (E)
NOTE Test sample containers can be the one originally used to sample the bituminous binder according to
EN 58.
6.9 Test containers or moulds for test specimen preparation, as described in the respective test
standards, into which the test sample is transferred prior to testing.
NOTE It may be that the test sample is not stored in a test sample container but directly transferred into moulds
or test containers.
7 Procedure for preparation of test samples
7.1 General
In order to produce the laboratory sample, the material shall have been sampled in accordance with
EN 58.
Perceptible properties of the laboratory sample shall be checked in accordance with EN 1425, prior to
sample preparation according to this document.
7.2 Solid or semi-solid samples
7.2.1 Samples up to one litre
Ease the lid or other closure of the container (6.4) and place the container with the lid loose in the oven
(6.2). The temperature of the oven shall be set at not more than (85 ± 5) °C above the expected softening
point as defined in EN 1427; this includes the maximum permissible measurement error described in 6.2.
For modified bitumen, use the procedure provided by the supplier. If no guidance is provided, for polymer
modified bitumen complying with EN 14023, the temperature of the oven shall be set at (190 ± 5) °C,
irrespective from the softening point; this includes the maximum permissible measurement error
described in 6.2. If the times given below are not sufficient to melt the polymer modified bitumen sample
completely, then place the sample container into an indirect heating apparatus (6.3) and continue the
heating of the sample under continuous stirring until the sample is homogeneous and pourable. In any
case, 200 °C shall not be exceeded.
Remove the container from the oven and stir (6.6) the heated sample with care in order to avoid
incorporating air bubbles into the sample. For modified binders, stir according to handling suggestion
from supplier, when available. Allow any air bubbles to escape, if necessary, by placing the sample in the
oven for not more than 5 min. Pour the liquefied and homogenized sample into the moulds or test sample
containers. Prepare all test samples that are required for one property at the same time.
The entire procedure (heating, homogenizing and moulding) shall conform to following requirements:
— < 50 g: max. 15 min;
— 50 g to 100 g: max 30 min;
— 100 g to 500 g: max 1 h;
— 500 g to 1 kg: max 2 h.
If the sample contains particles eg coke or detritus, it can be sieved through a warm sieve (6.7) before
collecting the test sample. The particles and sieving shall be mentioned in the test report under g) and h)
(see Clause 8).
Do not reuse the sample for other tests later.
oSIST prEN 12594:2023
prEN 12594:2023 (E)
7.2.2 Samples greater than one litre
If division of a sub-sample is necessary, ensure that the sub-sample is representative of the laboratory
sample. If necessary, take a sufficient amount of material (100 g minimum) from th
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