EN 12697-39:2020

SLOVENSKI STANDARD
01-maj-2020
Nadomešča:
SIST EN 12697-39:2012
Bitumenske zmesi - Preskusne metode - 39. del: Ugotavljanje deleža veziva s
sežigom
Bituminous mixtures - Test methods - Part 39: Binder content by ignition
Asphalt - Prüfverfahren - Teil 39: Bindemittelgehalt durch Thermoanalyse
Mélanges bitumineux - Méthodes d'essai - Partie 39 : Teneur en bitume
Ta slovenski standard je istoveten z: EN 12697-39:2020
ICS:
93.080.20 Materiali za gradnjo cest Road construction materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 12697-39
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 93.080.20 Supersedes EN 12697-39:2012
English Version
Bituminous mixtures - Test methods - Part 39: Binder
content by ignition
Mélanges bitumineux - Méthodes d'essai - Partie 39 : Asphalt - Prüfverfahren - Teil 39: Bindemittelgehalt
Teneur en bitume par calcination durch Thermoanalyse
This European Standard was approved by CEN on 18 November 2019.

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 COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12697-39:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 5
5 Apparatus . 6
6 Preparatory treatment of laboratory samples of bituminous mixtures . 7
7 Procedure. 8
7.1 General . 8
7.2 Test procedure for furnace with internal balance (Method A) . 8
7.3 Procedure for furnace without internal balance (Method B) . 9
8 Calculation . 10
8.1 Method A. 10
8.2 Method B. 11
9 Test report . 11
10 Precision data . 12
Annex A (normative) Calculation of calibration value . 13
A.1 General . 13
A.2 Calibration based on laboratory-prepared bituminous mixtures . 13
A.3 Calibration based on parallel analysis with extraction methods . 14
A.4 Calibration based on dry analysis of constituent aggregate . 15
Annex B (informative) Aggregate grading . 18
Bibliography . 19

European foreword
This document (EN 12697-39:2020) has been prepared by Technical Committee CEN/TC 227 “Road
materials”, the secretariat of which is held by BSI.
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 2020, and conflicting national standards shall
be withdrawn at the latest by August 2020.
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 12697-39:2012.
The following is a list of significant technical changes since the previous edition:
— the title no longer makes the method exclusively for hot mix asphalt;
— [ge] editorial update according to current standard template;
— [ge] references added to each formula in related text;
— [ge] NOTEs modified or adjusted to normal text where appropriate according to ISO/IEC Directives
– Part 2:2016, 24.5;
— [Clause 2] titles for test methods EN 12697-series corrected.
A list of all parts in the EN 12697 series can be found on the CEN website.
WARNING — The temperature of the oven and the different accessories is extremely high during the
ignition method. Special care should be taken when handling the equipment and the samples baskets
etc. should be placed, shielded and marked in a way that helps ensure any unpremeditated contact is
avoided.
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 describes a test method for the determination of the binder content of samples of
bituminous mixtures by ignition. As such, it is an alternative to the more traditional method of
extracting the binder using solvents. The method can be used for evaluation of mixture composition
because the remaining aggregate can be used for determining aggregate gradation and density,
provided excessive breakdown of the aggregate particles does not occur at the temperature reached.
The results can be used for process control or checks on the compliance of mixtures. However, the need
for calibration of a mixture, either on the complete mixture or on each of its component materials
separately, before an analysis can be carried out makes this method easier to use with regularly used
mixtures rather than with an extensive range of different mixtures from different aggregate sources.
The test method is equally suitable for the analysis of mixtures containing unmodified or modified
binders because the method has to be calibrated for each mixture being checked when calibration on
mixtures is used. In case of doubt/dispute, the determination of the calibration value based on
laboratory-prepared bituminous mixtures (see A.1 and A.2) is the reference method.
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 12597, Bitumen and bituminous binders — Terminology
EN 12697-1, Bituminous mixtures — Test methods — Part 1: Soluble binder content
EN 12697-14, Bituminous mixtures — Test methods — Part 14: Water content
EN 12697-27, Bituminous mixtures — Test methods — Part 27: Sampling
EN 12697-28, Bituminous mixtures — Test methods — Part 28: Preparation of samples for determining
binder content, water content and grading
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:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp/ui
3.1
binder
covers bituminous binder as described in EN 12597
3.2
corrected binder content
calculated binder content after correction by the calibration value in order to compensate for
components in the asphalt material itself that, due to the high temperatures during ignition, could give
rise to misinterpretations
3.3
calibration value
mean difference between the actual and measured binder contents for a particular bituminous mixture,
in per cent, as measured from three samples
Note 1 to entry: The calibration value is a specific, material-dependent value that normally results from a loss of
mass during the ignition from constituents in the mixture other than the binder. The principle of the binder
content by ignition is based upon a pre-determination of the corrections for the constituents used in the mixture,
primarily the aggregate.
Note 2 to entry: Mineral aggregates will show varying losses of mass during the test depending on their origin
(petrographic composition). Examples of components that give rise to high corrections are limestone, hydrated
lime and cellulose fibres.
Note 3 to entry: Methods for determining the calibration values are given in Annex A (normative).
3.4
target temperature
temperature to which the furnace would raise the sample in the test without the rise in temperature
due to the exothermic reaction of burning the binder
Note 1 to entry: The target temperature (usually 540 °C) is determined during the calibration.
3.5
test completion time
time from when the temperature in the furnace returns to the target temperature, after the initial rise
above that temperature, to when the test is completed with the sample having nominally reached
constant mass
Note 1 to entry: If a furnace with an internal balance is used, the completion time is when the loss of mass
between individual readings taken at 1 min intervals for three consecutive minutes is less than a constant mass
limit. If a furnace without an internal balance is used, the completion time is when the change in the mass of the
sample after further ignition for 15 min is less than a constant mass limit.
4 Principle
The test method determines the binder content of bituminous mixtures by ignition of the mixture in a
furnace.
The corrected binder content is obtained by a calculation that includes a calibration term. Calibration
terms are determined for particular asphalt mixtures or aggregates. Two test methods are described:
Method A utilizes a furnace with an internal balance; Method B permits the use of a furnace and
external balance. Re-determination (re-calibration or re-calculation depending on the calibration
method chosen from Annex A) shall be undertaken for each significant change in the mixture, including
changes in the constituent materials or their proportions.
The ignition process should have a controlled rise in temperature in order to avoid excessive heating of
the mineral aggregate which can break down the aggregate particles depending on the petrographic
composition.
NOTE The calculation of the calibration value based on parallel analysis with extraction methods (A.1 and
A.3) is appropriate for mixtures for which the intended proportions of the constituent materials are not known.
5 Apparatus
5.1 Furnace.
5.1.1 Furnace, capable of burning all the binder with the features detailed in 5.1.2 to 5.1.6 for
Method A and 5.1.2 to 5.1.4 for Method B.
NOTE The temperature required to burn all the binder will depend on the technology used and is determined
as part of the calibration procedure (see Annex A).
The furnace should not operate at its maximum capacity in order to allow flexibility and to ensure long
service.
5.1.2 Sample chamber, having an internal capacity capable of taking the sampl
...