SIST EN 12607-1:2025
(Main)Bitumen and bituminous binders - Determination of the resistance to hardening under influence of heat and air - Part 1: RTFOT method
Bitumen and bituminous binders - Determination of the resistance to hardening under influence of heat and air - Part 1: RTFOT method
This part of EN 12607 specifies a method for measuring the combined effects of heat and air on a thin moving film of bitumen or bituminous binder simulating the hardening which most bituminous binders undergo during mixing in an asphalt mixing plant.
The method described is not applicable to some modified binders or to those where the viscosity is too high to provide a moving film. In some cases the sample may creep out of the glass container and flow on the heating elements of the oven during testing. The method is suitable for other bituminous binders than paving grade bitumen, but the reference temperature might give excessive hardening that do not resemble real conditions during mixing at the plant. The method may not represent the hardening that occurs during mixing of warm mix binders.
The method is referred to as RTFOT, i.e. Rolling Thin Film Oven Test.
WARNING - Use of this European Standard can involve hazardous materials, operations and equipment. This European Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this European Standard to identify the hazards and assess the risks involved in performing this test method and to implement sufficient control measures to protect individual operators (and the environment). This includes appropriate safety and health practices and determination of the applicability of regulatory limitations prior to use.
If there is a likelihood of volatile components being present in a binder, this procedure should not be used. It should not be used for cutback bitumen or bituminous emulsions before these products have been stabilized, e.g. in accordance with EN 13074 2.
Bitumen und bitumenhaltige Bindemittel - Bestimmung der Beständigkeit gegen Verhärtung unter Einfluss von Wärme und Luft - Teil 1: RTFOT-Verfahren
Dieses Dokument legt ein Verfahren für die Vorbehandlung von Bitumen oder bitumenhaltigen Bindemitteln zur Bestimmung der kombinierten Wirkungen von Wärme und Luft auf einen rollierenden dünnen Film aus Bitumen oder bitumenhaltigem Bindemittel fest, mit dem die Verhärtung der meisten bitumenhaltigen Bindemittel während des Mischvorgangs in einer Asphaltmischanlage simuliert wird. Die Prüfung wird als RTFOT-Verfahren („Rolling Thin Film Oven Test“) bezeichnet – Prüfung mit rollierendem dünnen Film.
Das beschriebene Verfahren ist bei Straßenbaubitumen anwendbar. Angesichts der Tatsache, dass die Referenztemperatur zu übermäßiger Verhärtung führen kann, die keine Ähnlichkeit mit den während des Mischvorgangs in einer Asphaltmischanlage tatsächlich auftretenden Bedingungen hat, ist das beschriebene Verfahren auch bei anderen bitumenhaltigen Bindemitteln anwendbar. Das Verfahren gibt die Verhärtung, wie sie während des Mischens von Bitumen für Warmasphalte auftritt, möglicherweise nicht wieder.
Das beschriebene Verfahren ist bei Bindemitteln, deren Viskosität bei der Prüftemperatur das Erzeugen eines rollierenden Films nicht zulässt, nicht anwendbar. In einigen Fällen kann die Untersuchungsprobe über das Glasgefäß hinauskriechen und während der Prüfung auf die Heizelemente der Wärmekammer fließen.
Das Verfahren ist bei Bindemitteln mit flüchtigen Bestandteilen nicht anwendbar. Bei verschnittenem Bitumen oder Bitumenemulsionen ist das beschriebene Verfahren nur nach einer Stabilisierung, z. B. nach EN 13074 2 [[9]], anwendbar.
WARNUNG Die Anwendung dieses Dokuments kann den Einsatz gefährlicher Stoffe, Arbeitsgänge und Geräte bedingen. Dieses Dokument erhebt nicht den Anspruch, alle mit seiner Anwendung verbundenen Sicherheitsprobleme anzusprechen. Es liegt in der Verantwortung des Anwenders dieses Dokuments, die Gefahren zu identifizieren und die mit der Durchführung der Prüfung verbundenen Risiken zu beurteilen sowie geeignete Kontrollmaßnahmen zu implementieren, um den Ausführenden (und die Umwelt) zu schützen. Dies beinhaltet einen angemessenen Arbeits- und Gesundheitsschutz sowie die Klärung vor der Anwendung, ob einschränkende Vorschriften zu berücksichtigen sind.
Bitumes et liants bitumineux - Détermination de la résistance au durcissement sous l'effet de la chaleur et de l'air - Partie 1 : Méthode RTFOT
Ce document décrit une méthode de conditionnement des bitumes et des liants bitumineux, qui a pour objectif de rendre possible ensuite la mesure des effets combinés de la chaleur et de l'air sur un film mince de bitume ou de liant bitumineux en renouvellement permanent. Ce conditionnement simule le durcissement que subissent la plupart des liants bitumineux au cours du malaxage dans une centrale d'enrobage. Cette méthode est désignée par l'acronyme anglais RTFOT (Rolling Thin Film Oven Test) c’est-à-dire conditionnement d’un film mince en rotation dans une étuve.
Cette méthode s'applique aux bitumes routiers. La méthode s'applique aussi à d’autres types de liants bitumineux, en sachant que la température de référence pourrait alors induire un durcissement excessif qui ne ressemblerait pas à celui qui advient lors d'un enrobage en centrale. Il se peut que cette méthode ne soit pas représentative du durcissement des liants qui advient pendant l’enrobage tiède.
La méthode décrite n'est pas applicable à certains liants dont la viscosité à la température de conditionnement ne permet pas un renouvellement du film. Dans certains cas, l’échantillon pourrait même s’écouler hors de la fiole en verre et couler sur les éléments chauffants de l’étuve au cours de l’essai.
La méthode décrite n'est pas applicable aux liants contenant des fractions volatiles. Dans le cas des bitumes fluxés ou fluidifiés ou des émulsions bitumineuses, cette méthode ne s'applique qu'après un traitement de stabilisation, par exemple conformément à l’EN 13074-2 [9].
AVERTISSEMENT - L'utilisation de ce document implique l'usage de produits, d'opérations et d'équipements à caractère dangereux. Le présent document n'est pas censé aborder tous les problèmes de sécurité concernés par son usage. Il est de la responsabilité de son utilisateur d’identifier les dangers et d’évaluer les risques associés à la mise en œuvre de cette méthode d'essai, et de mettre en place des mesures de contrôle adaptées pour assurer la protection de chaque opérateur (et la protection de l'environnement). Ces mesures incluent des règles d'hygiène et de sécurité appropriées et la détermination de l'applicabilité des restrictions réglementaires avant utilisation.
Bitumen in bitumenska veziva - Določanje odpornosti proti otrjevanju pod vplivom toplote in zraka - 1. del: Metoda RTFOT
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2025
Nadomešča:
SIST EN 12607-1:2014
Bitumen in bitumenska veziva - Določanje odpornosti proti otrjevanju pod vplivom
toplote in zraka - 1. del: Metoda RTFOT
Bitumen and bituminous binders - Determination of the resistance to hardening under
influence of heat and air - Part 1: RTFOT method
Bitumen und bitumenhaltige Bindemittel - Bestimmung der Beständigkeit gegen
Verhärtung unter Einfluss von Wärme und Luft - Teil 1: RTFOT-Verfahren
Bitumes et liants bitumineux - Détermination de la résistance au durcissement sous
l'effet de la chaleur et de l'air - Partie 1 : Méthode RTFOT
Ta slovenski standard je istoveten z: EN 12607-1:2024
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 12607-1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 91.100.50 Supersedes EN 12607-1:2014
English Version
Bitumens and bituminous binders - Determination of the
resistance to hardening under influence of heat and air -
Part 1: RTFOT method
Bitumes et liants bitumineux - Détermination de la Bitumen und bitumenhaltige Bindemittel -
résistance au durcissement sous l'effet de la chaleur et Bestimmung der Beständigkeit gegen Verhärtung unter
de l'air - Partie 1 : Méthode RTFOT Einfluss von Wärme und Luft - Teil 1: RTFOT-
Verfahren
This European Standard was approved by CEN on 16 September 2024.
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 COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12607-1:2024 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 . 5
6 Calibration and verification . 10
7 Sampling . 11
8 Procedure . 11
8.1 General. 11
8.2 RTFOT conditioning . 11
8.3 Testing after RTFOT conditioning . 12
9 Calculation . 13
10 Expression of results . 14
11 Precision . 15
11.1 Repeatability, r . 15
11.2 Reproducibility, R . 15
12 Test report . 15
Annex A (informative) Characteristics of the former reference thermometer . 16
Annex B (informative) Verification of the temperature homogeneity in the RTFOT oven . 17
B.1 General. 17
B.2 Metrological principles . 17
B.3 Experience-based methods for temperature mapping . 18
Bibliography . 20
European foreword
This document (EN 12607-1:2024) has been prepared by Technical Committee CEN/TC 336 “Bitumens
and bituminous binders”, the secretariat of which is held by AFNOR.
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 May 2025, and conflicting national standards shall be
withdrawn at the latest by May 2025.
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 12607-1:2014.
a) Clause 1, Scope, has been revised and expanded;
b) Clause 2, Normative references, has been updated;
c) Clause 3, Terms and Definitions, has been added;
d) Clause 4, Principle, has been revised for clarification purposes and the reference duration of the
RTFOT method has been added;
e) Clause 5, Apparatus, together with the Figures 1 to 3, has been revised and completed;
f) Clause 6, Calibration and verification, has been added including the former requirements regarding
the RTFOT oven and the temperature measuring device;
g) the former subclause-structure of Clause 7, Sampling, has been removed and the former
subclause 5.3, Initial Characteristics, has been removed;
h) the titles of the subclauses of Clause 8, Procedure, have been changed for clarification purposes;
i) Clause 12, Test report, has been revised;
j) Annex B has been added;
k) the Bibliography has been updated.
A list of all parts in the EN 12607 series, published under the general title Bitumens and bituminous
binders — Determination of the resistance to hardening under the influence of heat and air, can be found
on the CEN website.
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 a method for the conditioning of bitumen or bituminous binders in order to
provide for measuring the combined effects of heat and air on a thin moving film of bitumen or
bituminous binder simulating the hardening which most bituminous binders undergo during mixing in
an asphalt mixing plant. The method is referred to as RTFOT – Rolling Thin Film Oven Test.
The method described is applicable to paving grade bitumen. The method described is also applicable to
other bituminous binders considering that the reference temperature can result in excessive hardening
that does not resemble real conditions during mixing at the plant. It is possible that the method does not
represent the hardening that occurs during mixing bitumen used for warm mix asphalt.
The method described is not applicable to those binders having a viscosity at the tested temperature not
allowing to provide a moving film. In some cases, it is possible that the test sample creeps out of the glass
container and flows on the heating elements of the oven during testing.
The method described is not applicable to binders with volatiles components present. In case of cutback
bitumen or bituminous emulsion, the described procedure is only applicable after being stabilized, e.g. in
accordance with EN 13074-2 [9].
WARNING — 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 identify the hazards and assess the risks involved in
performing this test method and to implement sufficient control measures to protect individual operators
(and the environment). This includes appropriate safety and health practices and determination of 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 12594, Bitumen and bituminous binders — Preparation of test samples
EN 12597, Bitumen and bituminous binders — Terminology
EN 12735-1, Copper and copper alloys — Seamless, round tubes for air conditioning and refrigeration —
Part 1: Tubes for piping systems
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12597 apply.
ISO and IEC maintain terminology 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/
4 Principle
A moving film of bituminous binder is heated in an RTFOT oven to a specified temperature for a given
period of time with constant supply of air. The reference temperature is 163 °C and the reference
duration is 75 min.
The effects of heat and air are determined based on the change in mass or on the change in the bituminous
binder’s characteristics such as penetration in accordance with EN 1426 [5], softening point in
accordance with EN 1427 [6] or dynamic viscosity in accordance with EN 12596 [8] or EN 13302 [10],
and other tests before and after the period in the RTFOT oven.
5 Apparatus
The usual laboratory apparatus and glassware, together with the following shall be used.
5.1 RTFOT oven, rectangular, double-walled, and electrically heated. The RTFOT oven shall be capable
of providing the selected test temperature and to endure the selected test temperature over the full
duration of the test.
The inside dimensions of the RTFOT oven excluding the air plenum shall be as follows:
— height of (340 ± 15) mm;
— width of (405 ± 15) mm;
— depth of (445 ± 15) mm.
The front door shall contain a window of the following dimensions:
— width of (320 ± 15) mm;
— height of (215 ± 15) mm.
The window shall contain two parallel layers of heat-resistant glass separated by an air space. Both layers
shall be positioned in such a way that an unobstructed view into the interior of the RTFOT oven through
the complete window is ensured.
The top of the upper heating element shall be (25 ± 9) mm below the floor of the RTFOT oven.
The RTFOT oven shall be ventilated by convection currents of air. The RTFOT oven shall have air inlets
and outlets for the evacuation of hot gases. The air inlets toward the bottom of the RTFOT oven shall be
located so that the air is able to flow around the heating elements and their total open area shall be
(1 500 ± 100) mm . The outlets for the hot gases’ evacuation shall be located in the upper part of the
RTFOT oven and their total open area shall be (1 000 ± 100) mm .
The RTFOT oven shall incorporate an air flow around the side walls and ceiling. The air plenum b
...
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