prEN 14769
(Main)Bitumen and bituminous binders - Accelerated long-term ageing conditioning by a Pressure Ageing Vessel (PAV)
Bitumen and bituminous binders - Accelerated long-term ageing conditioning by a Pressure Ageing Vessel (PAV)
This document specifies an accelerated ageing/conditioning procedure for bituminous binders. The procedure involves ageing trays of binder at elevated temperatures under pressurized conditions in a pressure ageing vessel (PAV).
NOTE For binders to be used in hot asphalt applications, the pre-conditioning of the sample can be performed using one of the methods in the EN 12607 series. For binders to be used in bituminous emulsion and cut-back or fluxed applications, the stabilizing of the sample is such that there are no volatiles remaining.
WARNING — The use of this document can involve hazardous materials, operations and equipment, in particular, the use of a high pressure ageing vessel. 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 health and safety practices and determine the applicability of regulatory limitations prior to use. If there is the likelihood of volatile components being present in a binder, this procedure is not used.
Bitumen und bitumenhaltige Bindemittel - Beschleunigte Langzeit-Alterung mit einem Druckalterungsbehälter (PAV)
Dieses Dokument legt ein Konditionierungsverfahren mit beschleunigter Alterung/Konditionierung für bitumenhaltige Bindemittel fest. Das Verfahren beschreibt die Alterung von Bindemitteln in Schalen bei erhöhten Temperaturen in einem Druckalterungsbehälter (PAV, en: pressure ageing vessel) unter Überdruck-Bedingungen.
ANMERKUNG Bei Bindemitteln, die für Heißasphaltanwendungen vorgesehen sind, kann die Vorbehandlung der Probe nach einem der in EN 12607 festgelegten Verfahren erfolgen. Bei Bindemitteln, die in Anwendungen mit Bitumenemulsionen und verschnittenen oder gefluxten Bitumen verwendet werden sollen, erfolgt die Stabilisierung der Probe so, dass keine flüchtigen Bestandteile zurückbleiben.
WARNUNG - Die Anwendung dieses Dokuments kann den Umgang mit gefährlichen Substanzen und Ausrüstungsteilen – speziell die Verwendung eines Hochdruckalterungsbehälters – und die Ausführung gefährlicher Arbeitsgänge einschließen. Dieses Dokument erhebt nicht den Anspruch, alle mit seiner Anwendung verbundenen Sicherheitsprobleme anzusprechen. Es liegt in der Verantwortung des Anwenders dieses Dokuments, geeignete Verhaltensregeln für den Arbeits- und Gesundheitsschutz festzulegen und vor der Anwendung zu klären, ob einschränkende Vorschriften zu berücksichtigen sind. Ist es wahrscheinlich, dass flüchtige Bestandteile in einem Bindemittel vorhanden sind, wird dieses Verfahren nicht angewendet.
Bitumes et liants bitumineux - Vieillissement long-terme accéléré réalisé dans un récipient de vieillissement sous pression (PAV)
Le présent document décrit une méthode de vieillissement/conditionnement accéléré pour les liants bitumineux. La méthode consiste à faire vieillir le liant, épandu sur des coupelles, en le soumettant à des températures élevées et sous pression, le tout dans un récipient sous pression adapté (PAV).
NOTE Pour les liants destinés à être utilisés dans des applications d'enrobés à chaud, le pré-conditionnement de l’échantillon peut être effectué selon une des méthodes de la série des EN 12607. Pour les liants destinés à être utilisés dans des émulsions bitumineuses et des applications de liants fluidifiés ou fluxés, la stabilisation de l’échantillon est réalisée de sorte à ce que plus aucun composé volatil ne soit présent.
AVERTISSEMENT — L'utilisation de ce document peut impliquer l'intervention de produits, d'opérations et d'équipements à caractère dangereux, en particulier, l’utilisation d’un récipient de vieillissement à haute pression. Le présent document n'est pas censé aborder tous les problèmes de sécurité concernés par son usage. Il incombe à son utilisateur d'établir des règles d'hygiène et de sécurité appropriées et de déterminer l'applicabilité des restrictions réglementaires avant utilisation. Si des composés volatils sont suspectés être présents dans le liant, cette procédure ne doit pas être utilisée.
Bitumen in bitumenska veziva - Pospešeno staranje v tlačni posodi (PAV)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 14769:2022
01-maj-2022
Bitumen in bitumenska veziva - Pospešeno staranje v tlačni posodi (PAV)
Bitumen and bituminous binders - Accelerated long-term ageing conditioning by a
Pressure Ageing Vessel (PAV)
Bitumen und bitumenhaltige Bindemittel - Beschleunigte Langzeit-Alterung mit einem
Druckalterungsbehälter (PAV)Bitumes et liants bitumineux - Vieillissement long-terme accéléré réalisé dans un
récipient de vieillissement sous pression (PAV)Ta slovenski standard je istoveten z: prEN 14769
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 14769:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 14769:2022
DRAFT
EUROPEAN STANDARD
prEN 14769
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2022
ICS 75.140; 91.100.50 Will supersede EN 14769:2012
English Version
Bitumen and bituminous binders - Accelerated long-term
ageing conditioning by a Pressure Ageing Vessel (PAV)
Bitumes et liants bitumineux - Vieillissement long- Bitumen und bitumenhaltige Bindemittel -
terme accéléré réalisé dans un récipient de Beschleunigte Langzeit-Alterung mit einem
vieillissement sous pression (PAV) Druckalterungsbehälter (PAV)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, 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 14769:2022 E
worldwide for CEN national Members.---------------------- Page: 3 ----------------------
oSIST prEN 14769:2022
prEN 14769:2022 (E)
Contents Page
European foreword ...................................................................................................................................................... 3
1 Scope .................................................................................................................................................................... 4
2 Normative references .................................................................................................................................... 4
3 Terms and definitions ................................................................................................................................... 4
4 Principle ............................................................................................................................................................. 5
5 Apparatus .......................................................................................................................................................... 5
6 Procedure .......................................................................................................................................................... 7
6.1 General................................................................................................................................................................ 7
6.2 Preparation of binder .................................................................................................................................... 8
6.3 Preparation of pressure vessel .................................................................................................................. 8
6.4 Filling of containers ....................................................................................................................................... 8
6.5 Long-term ageing conditioning .................................................................................................................. 9
7 Precision .......................................................................................................................................................... 10
8 Report ............................................................................................................................................................... 10
Bibliography ................................................................................................................................................................. 13
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prEN 14769:2022 (E)
European foreword
This document (prEN 14769:2022) 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 14769:2012.
In comparison with the previous edition, the following technical modifications have been made:
a) Terms and definition: update of 3.2, 3.3 and addition of 3.4;b) Apparatus: 5.1.3 and 5.1.1 merged; 5.3 updated; 5.9 and 5.10 added;
c) Procedure: updated in order to ease understanding;
d) Report updated;
e) Figure 1: key updated;
f) Figure 2: updated.
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prEN 14769:2021 (E)
1 Scope
This document specifies an accelerated ageing/conditioning procedure for bituminous binders. The
procedure involves ageing trays of binder at elevated temperatures under pressurized conditions in a
pressure ageing vessel (PAV).NOTE For binders to be used in hot asphalt applications, the pre-conditioning of the sample can be performed
using one of the methods in the EN 12607 series. For binders to be used in bituminous emulsion and cut-back or
fluxed applications, the stabilizing of the sample is such that there are no volatiles remaining.
WARNING — The use of this document can involve hazardous materials, operations and equipment, in
particular, the use of a high pressure ageing vessel. 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 health and safety practices and determine the applicability of regulatory limitations prior to
use. If there is the likelihood of volatile components being present in a binder, this procedure is not used.
2 Normative referencesThe 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 12594, Bitumen and bituminous binders - Preparation of test samplesEN 12607-1, Bitumen and bituminous binders - Determination of the resistance to hardening under
influence of heat and air - Part 1: RTFOT methodEN 12607-2:2014, Bitumen and bituminous binders - Determination of the resistance to hardening under
influence of heat and air - Part 2: TFOT methodEN 12607-3, Bitumen and bituminous binders - Determination of the resistance to hardening under
influence of heat and air - Part 3: RFT methodEN 13074-2, Bitumen and bituminous binders - Recovery of binder from bituminous emulsion or cut-back
or fluxed bituminous binders - Part 2: Stabilization after recovery by evaporation
3 Terms and definitionsFor 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 https://www.electropedia.org/• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
short-term ageing
ageing that the binder experiences during the production, laying and compaction of asphalt mixtures
3.2long-term ageing
ageing that the binder experiences during its service life in asphalt pavements
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prEN 14769:2022 (E)
3.3
stabilization
conditioning of the binders from bituminous emulsions, cut-back or fluxed bitumens to produce residual
binders for further determination of their characteristicsNote 1 to entry: The conditioning procedure is described in EN 13074-2.
3.4
short-term ageing conditioning
conditioning that the binder experiences during the method according to EN 12607-1, EN 12607-2 or
EN 12607-33.5
accelerated long-term ageing conditioning
simulated long-term ageing that the binder experiences during the ageing procedure described in this
test standard; this procedure is called “accelerated” because the ageing of the binder during long-term
service life is speeded up for laboratory purposes by use of high pressure and high temperature
Note 1 to entry: In the case of hot mix asphalt binders, the long-term ageing conditioning is carried out on binders
that have already been conditioned through short-term ageing conditioning procedures (see 3.4).
Note 2 to entry: In the case of bituminous emulsion, cut-back and fluxed bitumens, the long-term ageing
conditioning is carried out on binders after a stabilisation procedure (see 3.3).
4 PrincipleA static film of binder is heated to a specified temperature under a specified air pressure for a given period
of time. This is done in order to simulate the changes occurring to the binder within the pavement during
service life.The effects of this ageing procedure are evaluated on the residual binder after the test.
NOTE The ageing of binders during service life is affected by ambient temperature and air pressure as well as
by a mixture of associated variables such as volumetric mixture proportions, mixture permeability, aggregate
properties and other factors. This test is intended to provide an evaluation of the relative ageing behaviour of
binders under specified conditions, but it cannot account entirely for bituminous application variables or provide
relative resistance to ageing at in-service conditions.5 Apparatus
Usual laboratory apparatus and glassware, together with the following:
5.1 PAV equipment, designed to operate at (2,1 ± 0,1) MPa between 80 °C and 115 °C. Either 5.1.1 or
5.1.2 is applicable (see Figure 1).5.1.1 Pressure vessel, which shall be made from stainless steel and shall have internal dimensions
adequate to contain a pan holder capable of holding a number of containers (according to requirements
and dimensions given in EN 12607-2:2014, 4.3).The bottom of the pressure vessel shall be such that the containers are held in a horizontal position with
the binder evenly distributed across the diameter of the container in equal binder film thickness. A
diagram showing a possible configuration of the vessel pan holder and containers and specifying
dimensional requirements is shown in Figure 2.---------------------- Page: 7 ----------------------
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prEN 14769:2021 (E)
Other pressure vessels of different internal dimensions can be used provided that the operating
conditions can be satisfied. In such cases, the containers used may differ from the standard dimensions
given in EN 12607-2.The pressure vessel may be a separate unit to be placed in a forced draft oven or an integral part with a
temperature control system.The PAV equipment shall have an integrated, built-in temperature control system that is capable of:
a) bringing the loaded pressure vessel to the desired conditioning temperature ± 1,0 °C, as recorded by
the temperature measuring device inside the vessel, within two hours;b) maintaining the conditioning temperature at ± 1,0 °C.
SAFETY PRECAUTIONS — The pressure vessel operates at high temperatures and high pressures. All
safety guidelines issued by equipment manufacturers shall be adhered to.5.1.2 Forced draft oven, to be used with 5.1.1 and which is capable of:
a) bringing the loaded pressure vessel to the desired conditioning temperature ± 1,0 °C, as recorded by
a suitable temperature measuring device inside the vessel, within two hours after loading the
pressure vessel into the oven;b) maintaining the conditioning temperature at ± 1,0 °C.
The oven shall have sufficiently large interior dimensions to allow forced air to freely circulate within the
oven and around the pressure vessel. The oven shall contain a stand or a shelf, which supports the loaded
pressure vessel in a level position above the lower surface of the oven.5.2 Pressure controlling devices, which include the following:
5.2.1 Pressure release valve, which prevents pressure in the vessel from exceeding 2,5 MPa during
the ageing procedure.5.2.2 Pressure regulator, capable of controlling the pressure within the vessel to ± 0
...
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