SIST EN 12697-25:2016/oprA1:2020
(Amendment)Bituminous mixtures - Test methods - Part 25: Cyclic compression test
Bituminous mixtures - Test methods - Part 25: Cyclic compression test
This European Standard specifies three test methods (A1, A2 and B) for determining the resistance of bituminous mixtures to permanent deformation by cyclic compression tests with confinement. The tests make it possible to rank various mixtures or to check on the acceptability of a given mixture. They do not allow making a quantitative prediction of rutting in the field to be made.
Test methods A1 and A2 describe methods for determining the creep characteristics of bituminous mixtures by means of a uniaxial cyclic compression test with some confinement present. In this test a cylindrical test specimen is subjected to a cyclic axial stress. Method A2 is preferred for mastic asphalt and Method A1 for other asphalt mixtures. To achieve a certain confinement, the diameter of the loading platen is taken smaller than that of the test specimen. In test method A1, the test specimen is loaded by block-pulses whereas in method A2 haversine loading with rest time is applied.
Test method B describes the method for determining the creep characteristics of bituminous mixtures by means of the triaxial cyclic compression test. In this test a cylindrical test specimen is subjected to a defined confining stress and a cyclic axial stress. This test is most often used for the purpose of evaluation and development of new types of mixtures.
This European Standard applies to test specimens prepared in the laboratory or cored from the road. The maximum size of the aggregates is 32 mm.
NOTE 1 Confinement of the test specimen is necessary to simulate realistic rutting behaviour, especially for gap-graded mixtures with a large stone fraction.
NOTE 2 For the purpose of Type Testing, the test conditions are given in EN 13108-20.
Asphalt - Prüfverfahren - Teil 25: Druck-Schwellversuch
Diese Europäische Norm legt drei Prüfverfahren (A1, A2 und B) zur Bestimmung der Beständigkeit von Asphalt gegen bleibende Verformung mithilfe von Druckschwellversuchen mit Behinderung der Querdehnung fest. Diese Prüfungen erlauben es, verschiedene Mischgüter einzustufen oder die Eignung eines bestimmten Mischgutes zu prüfen. Sie gestatten keine quantitative Vorhersage hinsichtlich der Spurrinnenbildung auf der Straße.
Die Prüfverfahren A1 und A2 beschreiben Verfahren zur Bestimmung der Kriecheigenschaften von Asphalt mit Hilfe eines einaxialen Druckschwellversuchs mit begrenzter Behinderung der Querdehnung. Bei dieser Prüfung wird ein zylindrischer Probekörper einer zyklischen axialen Dehnung ausgesetzt. Verfahren A2 ist vorzugsweise für Gussasphalt und Verfahren A1 für sonstige Asphaltmischungen anzuwenden. Um eine bestimmte Behinde¬rung der Querdehnung zu erreichen, wird für die Lastplatte ein Durchmesser gewählt, der kleiner ist als der des Probekörpers. Im Prüfverfahren A1 wird der Probekörper durch Blockimpulse belastet, während in Verfahren A2 die Belastung in Form eines Haversine-Impulses mit Lastpause erfolgt.
Das Prüfverfahren B beschreibt das Verfahren zur Bestimmung der Kriecheigenschaften von Asphalt mit Hilfe des triaxialen Druckschwellversuchs. Bei dieser Prüfung wird ein zylindrischer Probekörper einem Druck zur definierten Behinderung der Querdehnung und einer zyklischen axialen Dehnung ausgesetzt. Die Prüfung wird sehr häufig für die Bewertung und die Entwicklung neuer Arten von Mischgütern verwendet.
Diese Europäische Norm gilt für Probekörper, die entweder im Labor hergestellt oder durch Bohrkernentnahme aus der Straße gewonnen wurden. Die maximale Korngröße beträgt 32 mm.
ANMERKUNG 1 Die Behinderung der Querdehnung des Probekörpers ist erforderlich, um das tatsächliche Verhalten bei der Spurrinnen¬bildung, besonders für Mischgüter mit Ausfallkörnung mit einem großen Splittanteil, vorherzusagen.
ANMERKUNG 2 Zum Zweck der Übereinstimmung mit EN 13108 sind die Prüfbedingungen in EN 13108-20 beschrieben.
Mélanges bitumineux - Méthodes d'essai - Partie 25 : Essai de compression cyclique
[Not available]
Bitumenske zmesi - Preskusne metode - 25. del: Ciklični tlačni preskus
General Information
- Status
- Not Published
- Public Enquiry End Date
- 19-Apr-2020
- Technical Committee
- CES - Roads
- Current Stage
- 4020 - Public enquire (PE) (Adopted Project)
- Start Date
- 27-Feb-2020
- Due Date
- 16-Jul-2020
- Completion Date
- 17-Apr-2020
Relations
- Effective Date
- 01-Apr-2020
Overview
SIST EN 12697-25:2016/oprA1:2020 is a European Standard developed by CEN (European Committee for Standardization) that specifies test methods for evaluating the resistance of bituminous mixtures to permanent deformation through cyclic compression tests with confinement. The standard outlines three specific test methods-A1, A2, and B-designed to assess the creep characteristics of bituminous mixtures, which are essential for ensuring durability and performance of asphalt pavements.
This amendment, SIST EN 12697-25:2016/oprA1:2020, updates loading conditions and friction reduction techniques in the cyclic compression test procedures to improve consistency and accuracy of results. These methods apply to laboratory-prepared or in-situ cored cylindrical specimens with aggregate sizes up to 32 mm, simulating real field conditions effectively.
Key Topics
Cyclic Compression Test Methods:
- Method A1: Uniaxial cyclic compression test using block-pulse loading, typically applied to rolled asphalt mixtures.
- Method A2: Uses haversine loading with rest intervals, preferred for mastic asphalt.
- Method B: Triaxial cyclic compression test that applies both confining and axial stresses, ideal for evaluating new mixture formulations.
Test Specimen Requirements:
Cylindrical specimens with controlled confinement to simulate field rutting, especially important for gap-graded mixtures with large aggregate fractions.Loading Conditions Update:
In Method A1, the pre-stress application duration was increased from approximately 120 seconds to 600 seconds to better reflect field stress exposure.Friction Reduction Improvements:
New membrane-lubricant-membrane system using geotechnical latex rubber membranes and silicon grease replaces previous PTFE disk methods, ensuring consistent reduction of friction between loading platens and specimen surfaces, which significantly affects test accuracy.Applications of Tests:
These methods allow for ranking mixtures by deformation resistance or verifying mixture acceptability but do not facilitate direct quantitative rutting predictions.
Applications
Pavement Material Evaluation:
SIST EN 12697-25:2016/oprA1:2020 provides essential test methods to assess the deformation resistance of bituminous mixtures, crucial for pavement design and maintenance strategies.Quality Control and Type Testing:
Asphalt producers and contractors can apply these tests to verify mixture properties match specifications and ensure long-term pavement durability.Research and Development:
The triaxial method (Method B) supports innovative bituminous mixture development, enabling evaluation under realistic stress conditions and informed improvements.Road Construction and Rehabilitation:
Authorities and engineers can use test results to select or approve bituminous mixtures suited for high-traffic or heavily stressed road sections.
Related Standards
EN 13108-20:
Specifies test conditions for type testing of bituminous mixtures, providing essential parameters referenced in EN 12697-25 for consistent testing environments.EN 12697 Series:
A comprehensive suite of European standards covering various bituminous mixture test methods, ensuring pavement materials meet performance and safety requirements.National Standards Adoptions:
As a CEN standard, SIST EN 12697-25:2016/oprA1:2020 is adopted by national standardization bodies across Europe, harmonizing test methods to support cross-border infrastructure quality.
Keywords: EN 12697-25, bituminous mixtures, cyclic compression test, permanent deformation, asphalt testing, CEN standards, pavement materials, triaxial compression test, asphalt mixture evaluation, rutting resistance, laboratory testing, rolled asphalt, mastic asphalt, friction reduction, membrane system.
Frequently Asked Questions
SIST EN 12697-25:2016/oprA1:2020 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Bituminous mixtures - Test methods - Part 25: Cyclic compression test". This standard covers: This European Standard specifies three test methods (A1, A2 and B) for determining the resistance of bituminous mixtures to permanent deformation by cyclic compression tests with confinement. The tests make it possible to rank various mixtures or to check on the acceptability of a given mixture. They do not allow making a quantitative prediction of rutting in the field to be made. Test methods A1 and A2 describe methods for determining the creep characteristics of bituminous mixtures by means of a uniaxial cyclic compression test with some confinement present. In this test a cylindrical test specimen is subjected to a cyclic axial stress. Method A2 is preferred for mastic asphalt and Method A1 for other asphalt mixtures. To achieve a certain confinement, the diameter of the loading platen is taken smaller than that of the test specimen. In test method A1, the test specimen is loaded by block-pulses whereas in method A2 haversine loading with rest time is applied. Test method B describes the method for determining the creep characteristics of bituminous mixtures by means of the triaxial cyclic compression test. In this test a cylindrical test specimen is subjected to a defined confining stress and a cyclic axial stress. This test is most often used for the purpose of evaluation and development of new types of mixtures. This European Standard applies to test specimens prepared in the laboratory or cored from the road. The maximum size of the aggregates is 32 mm. NOTE 1 Confinement of the test specimen is necessary to simulate realistic rutting behaviour, especially for gap-graded mixtures with a large stone fraction. NOTE 2 For the purpose of Type Testing, the test conditions are given in EN 13108-20.
This European Standard specifies three test methods (A1, A2 and B) for determining the resistance of bituminous mixtures to permanent deformation by cyclic compression tests with confinement. The tests make it possible to rank various mixtures or to check on the acceptability of a given mixture. They do not allow making a quantitative prediction of rutting in the field to be made. Test methods A1 and A2 describe methods for determining the creep characteristics of bituminous mixtures by means of a uniaxial cyclic compression test with some confinement present. In this test a cylindrical test specimen is subjected to a cyclic axial stress. Method A2 is preferred for mastic asphalt and Method A1 for other asphalt mixtures. To achieve a certain confinement, the diameter of the loading platen is taken smaller than that of the test specimen. In test method A1, the test specimen is loaded by block-pulses whereas in method A2 haversine loading with rest time is applied. Test method B describes the method for determining the creep characteristics of bituminous mixtures by means of the triaxial cyclic compression test. In this test a cylindrical test specimen is subjected to a defined confining stress and a cyclic axial stress. This test is most often used for the purpose of evaluation and development of new types of mixtures. This European Standard applies to test specimens prepared in the laboratory or cored from the road. The maximum size of the aggregates is 32 mm. NOTE 1 Confinement of the test specimen is necessary to simulate realistic rutting behaviour, especially for gap-graded mixtures with a large stone fraction. NOTE 2 For the purpose of Type Testing, the test conditions are given in EN 13108-20.
SIST EN 12697-25:2016/oprA1:2020 is classified under the following ICS (International Classification for Standards) categories: 93.080.20 - Road construction materials. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 12697-25:2016/oprA1:2020 has the following relationships with other standards: It is inter standard links to SIST EN 12697-25:2016. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 12697-25:2016/oprA1:2020 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2020
Bitumenske zmesi - Preskusne metode - 25. del: Ciklični tlačni preskus
Bituminous mixtures - Test methods - Part 25: Cyclic compression test
Asphalt - Prüfverfahren - Teil 25: Druck-Schwellversuch
Mélanges bitumineux - Méthodes d'essai - Partie 25 : Essai de compression cyclique
Ta slovenski standard je istoveten z: EN 12697-25:2016/prA1
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.
DRAFT
EUROPEAN STANDARD
EN 12697-25:2016
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
February 2020
ICS 93.080.20
English Version
Bituminous mixtures - Test methods - Part 25: Cyclic
compression test
Mélanges bitumineux - Méthodes d'essai - Partie 25 : Asphalt - Prüfverfahren - Teil 25: Druck-
Essai de compression cyclique Schwellversuch
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 227.
This draft amendment A1, if approved, will modify the European Standard EN 12697-25:2016. If this draft becomes an
amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
inclusion of this amendment into the relevant national standard without any alteration.
This draft amendment 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12697-25:2016/prA1:2020 E
worldwide for CEN national Members.
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