prEN 12595
(Main)Bitumen and bituminous binders - Determination of kinematic viscosity
Bitumen and bituminous binders - Determination of kinematic viscosity
This document specifies a method for the determination of the kinematic viscosity of bituminous binders at 60 °C and 135 °C, in a range from 6 mm2/s to 300 000 mm2/s. Other temperatures are possible if calibration constants are known. Bituminous emulsions are not covered within the scope of this method.
Results for this method can be used to calculate dynamic viscosity when the density of the test material is known or can be determined.
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 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.
Bitumen und bitumenhaltige Bindemittel - Bestimmung der kinematischen Viskosität
Dieses Dokument legt ein Verfahren zur Bestimmung der kinematischen Viskosität von bitumenhaltigen Bindemitteln bei 60 °C und 135 °C in einem Bereich von 6 mm2/s bis 300 000 mm2/s fest. Andere Temperaturen sind möglich, sofern Kalibrierungskonstanten bekannt sind. Dieses Verfahren gilt nicht für Bitumenemulsionen.
Die nach diesem Verfahren erhaltenen Ergebnisse können zur Berechnung der dynamischen Viskosität verwendet werden, wenn die Dichte des Prüfmaterials bekannt ist oder bestimmt werden kann.
WARNUNG - Die Anwendung dieses Dokuments kann den Umgang mit gefährlichen Substanzen und Ausrüstungsteilen 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, 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 viscosité cinématique
Le présent document prescrit une méthode de détermination de la viscosité cinématique de liants bitumineux à 60 °C et 135 °C, dans l'intervalle de 6 mm2/s à 300 000 mm2/s. D’autres températures sont possibles si les constantes de calibration sont connues. Le domaine d’application de la présente méthode ne comprend pas les émulsions bitumineuses.
Les résultats de la présente méthode peuvent être utilisés pour calculer la viscosité dynamique quand la masse volumique du matériau d'essai est connue ou peut être déterminée.
AVERTISSEMENT — L'utilisation de ce document implique l'intervention 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 incombe à son utilisateur d'identifier les dangers et d'évaluer les risques liés à l'application de cette méthode d'essai et de mettre en œuvre des mesures de prévention pour protéger les opérateurs (et l'environnement). Cela passe entre autre par l’’établissement de règles d'hygiène et de sécurité appropriées et la détermination de l'applicabilité des restrictions réglementaires avant utilisation.
Bitumen in bitumenska veziva - Določanje kinematične viskoznosti
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 12595:2022
01-februar-2022
Bitumen in bitumenska veziva - Določanje kinematične viskoznosti
Bitumen and bituminous binders - Determination of kinematic viscosity
Bitumen und bitumenhaltige Bindemittel - Bestimmung der kinematischen Viskosität
Bitumes et liants bitumineux - Détermination de la viscosité cinématique
Ta slovenski standard je istoveten z: prEN 12595
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 12595:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 12595:2022
DRAFT
EUROPEAN STANDARD
prEN 12595
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2021
ICS 75.140; 91.100.50 Will supersede EN 12595:2014
English Version
Bitumen and bituminous binders - Determination of
kinematic viscosity
Bitumes et liants bitumineux - Détermination de la Bitumen und bitumenhaltige Bindemittel -
viscosité cinématique Bestimmung der kinematischen ViskositätThis 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12595:2021 E
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prEN 12595:2021 (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 Preparation of test samples ...................................................................................................................... 6
7 Procedure ........................................................................................................................................................ 6
7.1 Test conditions .............................................................................................................................................. 6
7.2 Determination and measurement .......................................................................................................... 7
8 Calculation ....................................................................................................................................................... 8
9 Expression of results ................................................................................................................................... 8
10 Precision .......................................................................................................................................................... 9
10.1 Repeatability .................................................................................................................................................. 9
10.2 Reproducibility .............................................................................................................................................. 9
11 Test report ....................................................................................................................................................... 9
Annex A (normative) Specifications of viscometers .................................................................................. 10
Annex B (informative) Calibration of viscometers ..................................................................................... 16
Annex C (informative) Example for calculation of results ....................................................................... 19
Bibliography .............................................................................................................................................................. 20
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prEN 12595:2021 (E)
European foreword
This document (prEN 12595:2021) 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 12595:2014.
In comparison with the previous edition, the following technical modifications have been made:
— deletion of note under scope;— removal of dated references;
— reference to mercury thermometers in 5.2 has been deleted;
— reference total immersion thermometer in 5.2 has been deleted;
— additional information on use of viscometers added in 7.1;
— precision on time for thermal equilibrium and removal of note in 7.2;
— information on validity of individual test data to calculate mean value added in Clause 8;
— key added to Figures A.1, A.2 and A.3;— Figures A.2 and A.3 have been revised;
— Annex C has been deleted;
— new Annex C introduced with examples on calculation;
— ASTM E77-98 deleted from Bibliography.
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1 Scope
This document specifies a method for the determination of the kinematic viscosity of bituminous binders
2 2at 60 °C and 135 °C, in a range from 6 mm /s to 300 000 mm /s. Other temperatures are possible if
calibration constants are known. Bituminous emulsions are not covered within the scope of this method.
Results for this method can be used to calculate dynamic viscosity when the density of the test material
is known or can be determined.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 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 bindersEN 12594, Bitumen and bituminous binders - Preparation of test samples
EN 12607-2, Bitumen and bituminous binders - Determination of the resistance to hardening under
influence of heat and air - Part 2: TFOT methodEN ISO 2592, Petroleum and related products - Determination of flash and fire points - Cleveland open cup
method (ISO 2592:2017)EN ISO 3696:1995, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)
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
kinematic viscosity
ratio between the dynamic viscosity and the density of a liquid at the temperature of viscosity measured
Note 1 to entry: Kinematic viscosity is a measure of a liquid’s resistance to flow under gravity.
2 2Note 2 to entry: The Sl unit of kinematic viscosity is m /s; for practical use, a sub-multiple (mm /s) is more
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3.2
density
mass of a liquid divided by its volume
Note 1 to entry: When reporting density, the unit of density used, together with the temperature, is explicitly
stated, for example kilogram per cubic metre.Note 2 to entry: The SI unit of density is kg/m .
3.3
dynamic viscosity
ratio between the applied shear stress and the velocity gradient
Note 1 to entry: Dynamic viscosity is a measure of a liquid’s resistance to flow, and is commonly called the viscosity
of the liquid.Note 2 to entry: The SI unit of dynamic viscosity is Pa⋅s.
3.4
Newtonian liquid
liquid with a viscosity that is independent of the rate of shear
Note 1 to entry: The constant ratio of the shear stress to the velocity gradient is the dynamic viscosity of the liquid.
If this ratio is not constant, the liquid is non-Newtonian.4 Principle
The time for a fixed volume of the liquid to flow through the capillary of a calibrated glass capillary
viscometer under an accurately reproducible head and at a closely controlled temperature is determined
(efflux time). The kinematic viscosity is calculated by multiplying the efflux time in seconds by the
viscometer calibration factor.5 Apparatus
Usual laboratory apparatus and glassware, together with the following:
5.1 Viscometer, CANNON-FENSKE, BS/IP/RF and the Zeitfuchs Cross-Arm viscometers , capillary-
type, made of borosilicate glass, suitable for this method are described in Figure A.1, Figure A.2 and
Figure A.3, and Table A.1, Table A.2 and Table A.3. Other viscometers are allowed if test results obtained
are comparable.Calibrated viscometers are available from commercial suppliers. Details regarding the calibration of
viscometers are given in Annex B.5.2 Temperature measuring device.
A temperature measuring device (combining sensor and reading unit) shall:
— have a range from at least 55 °C to 140 °C;
— be readable to 0,05 °C or less;
This information is given for the convenience of users of this document and does not constitute an endorsement by CEN
of this product. Equivalent products may be used if they can be shown to lead to the same results.
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— have an accuracy of 0,1 °C or better.
Sensors based on platinum resistance thermometers have been found suitable but other principles are
also allowed. The temperature measuring device shall be calibrated regularly.When measuring and controlling nominally constant temperatures, as in this test method, the thermal
response time can be rather high (e.g. slow response to a change in temperature). Care shall be taken to
consider this aspect since low thermal response times of the sensor can indicate greater cyclic variations
than the bituminous material in practise experiences.5.3 Bath, suitable for immersion of the viscometer so that the liquid reservoir or the top of the capillary,
whichever is uppermost, is at least 20 mm below the top of the bath level, and with provisions for
visibility of the viscometer and the thermometer. Firm supports for the viscometer shall be provided, or
the viscometer shall be an integral part of the bath. The efficiency of the stirring and the balance between
heat losses and heat input shall be such that the temperature of the bath medium does not vary by more
than 0,3 °C (measurement at 60 °C) or 0,5 °C (measurement at 135 °C) over the length of the viscometer,
or from viscometer to viscometer in the various bath positions.Water, conforming to the grade 3 of EN ISO 3696:1995, is a suitable bath liquid for determinations at
60 °C. USP white oil or any paraffinic or silicone oil with a flash point above 215 °C has been found suitable
for determination at 135 °C. The flash point is determined in accordance with EN ISO 2592.
5.4 Timer, stop watch (spring or battery driven) graduated in divisions of 0,1 s or less and accurate to
0,5 s over 1 000 s when tested over intervals of not less than 15 min.5.5 Electrical timing devices, for use only on electrical circuits the frequencies of which are accurate
to 0,5 s over 1 000 s or better.NOTE Alternating currents, the frequencies of which are intermittently and not continuously controlled, as
provided by some public power systems, can cause large errors, particularly over short timing intervals, when used
to actuate electrical timing devices.5.6 Automatic or semi-automatic equipment, are allowed providing that they meet the
specifications for temperature regulation and time accuracy described in Clause 5 and have been shown
to achieve the same precision as given in Clause 10 and are fully calibrated.6 Preparation of test samples
The laboratory sample shall be taken in accordance with EN 58. Prepare the sample in accordance with
EN 12594.Bring the viscometer and the sample to the test temperature (in order to avoid correction of constants of
the viscometer). Stir the sample thoroughly without entrapment of air. If the temperature has dropped
to 30 °C or more below the test temperature, reheat the sample.Immediately charge the viscometer, or, if the test is to be made at a later time, pour approximately 20 ml
into one or more clean and dry containers having an approximate volume of 30 ml and immediately seal
with an airtight closure.7 Procedure
7.1 Test conditions
Maintain the bath (5.3) at the test temperature to within ± 0,3 °C (measurements at 60 °C) or ± 0,5 °C
(measurements at 135 °C). Apply the necessary corrections, if any, to all thermometer readings.
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Select a clean, dry viscometer giving an efflux time greater than 60 s and preheat it to the test
temperature.Charge the viscometer in the manner dictated by the design of the instrument, as described in the
following.To charge the CANNON-FENSKE opaque viscometer, invert the viscometer and apply vacuum to the
tube L, immersing tube N in the liquid sample. Draw liquid through tube N, filling bulb D to fill mark G.
Wipe excess sample off tube N and invert the viscometer to its normal position. Mount the viscometer in
the constant-temperature bath keeping tube L vertical.Apply a stopper to the top of the apertures of tube L when bulb A is nearly 4/5th filled.
Mount the BS/IP/RF viscometer in the constant temperature bath keeping tube L vertical. Pour sample
through tube N to a point just above filling mark G; allow the sample to flow freely through capillary R,
taking care that the liquid column remains unbroken, until the lower meniscus is about 5 mm belo
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