EN 12697-26:2018
(Main)Bituminous mixtures - Test methods - Part 26: Stiffness
Bituminous mixtures - Test methods - Part 26: Stiffness
This European Standard specifies the methods for characterizing the stiffness of bituminous mixtures by alternative tests, including bending tests and direct and indirect tensile tests. The tests are performed on compacted bituminous material under a sinusoidal loading or other controlled loading, using different types of specimens and supports.
The procedure is used to rank bituminous mixtures on the basis of stiffness, as a guide to relative performance in the pavement, to obtain data for estimating the structural behaviour in the road and to judge test data according to specifications for bituminous mixtures.
As this standard does not impose a particular type of testing device the precise choice of the test conditions depends on the operating scope and working range of the device used.
For the choice of specific test conditions, the requirements of the product standards for bituminous mixtures should be respected.
The applicability of this document is described in the product standards for bituminous mixtures.
Asphalt - Prüfverfahren - Teil 26: Steifigkeit
Diese Europäische Norm legt die Verfahren zur Charakterisierung der Steifigkeit von Asphalt durch verschiedene Prüfungen, einschließlich Biegeprüfungen sowie direkte und indirekte Zugprüfungen, fest. Die Prüfungen werden an verdichtetem Asphalt unter sinusförmiger oder einer anderen kontrollierten Belastung unter Verwendung verschiedener Probekörpertypen und Auflagerungen vorgenommen.
Das Verfahren dient zur Einstufung von Asphalt auf der Grundlage seiner Steifigkeit als Hinweis auf das relative Leistungsvermögen von Asphalt in der Fahrbahnbefestigung, um Daten zur Abschätzung des Tragverhaltens in der Straße zu erhalten und um die Prüfdaten nach den für Asphalt geltenden Festlegungen zu beurteilen.
Da diese Norm keinen bestimmten Prüfgerätetyp vorschreibt, hängt die genaue Auswahl der Prüfbedingungen vom Einsatz- und Arbeitsbereich des verwendeten Prüfgeräts ab.
Bei der Auswahl der jeweiligen Prüfbedingungen sollten die Anforderungen der Produktnormen für Asphalt berücksichtigt werden.
Die Anwendbarkeit dieses Dokumentes ist in den Produktnormen für Asphalt beschrieben.
Mélanges bitumineux - Méthodes d'essai- Partie 26 : Rigidité
La présente Norme européenne spécifie les méthodes de caractérisation de la rigidité des mélanges bitumineux à l'aide d'essais au choix, comprenant des essais de flexion et des essais de traction directe et indirecte. Les essais sont réalisés sur des matériaux bitumineux compactés, au moyen d'un chargement sinusoïdal ou d'un autre chargement contrôlé, en utilisant différents types d'éprouvettes et de supports.
La procédure est utilisée pour classer les mélanges bitumineux en fonction de leur rigidité, pour servir de guide pour les performances relatives dans les chaussées, pour disposer de données utilisées pour estimer le comportement structurel dans les chaussées et juger les résultats d'essais en fonction des spécifications concernant les mélanges bitumineux.
La présente norme n'imposant pas de type particulier d'appareillage d'essai, le choix spécifique des conditions d'essai dépend des capacités et du domaine d'emploi de l'appareillage utilisé.
Pour le choix des conditions d'essai spécifiques, il convient de respecter les exigences des normes produit sur les mélanges bitumineux.
L'applicabilité du présent document est décrite dans les normes produit des mélanges bitumineux.
Bitumenske zmesi - Preskusne metode - 26. del: Togost
Ta evropski standard določa metode za karakterizacijo togosti bitumenskih zmesi z alternativnimi preskusi, skupaj s preskusi upogiba in preskusi direktne ter indirektne nateznosti. Preskusi se izvajajo na zgoščenem bitumenskem materialu pod sinusnim obremenjevanjem ali pod nadzorovanim obremenjevanjem z različnimi vrstami preskušancev in podpor.
Postopek se uporablja za razvrščanje bitumenskih zmesi na podlagi togosti kot smernica v zvezi z relativnimi lastnostmi v voziščni konstrukciji za pridobivanje podatkov z namenom vrednotenja strukturnega obnašanja na cesti ter za ocenjevanje preskusnih podatkov glede na specifikacije bitumenskih zmesi.
Ker ta standard ne predpisuje posebne preskusne naprave, je natančna izbira preskusnih pogojev odvisna od možnosti in delovnega obsega uporabljene naprave.
Pri izbiri specifičnih preskusnih pogojev je treba upoštevati standarde za izdelke za bitumenske zmesi.
Uporabnost tega dokumenta je opisana v standardih za izdelke za bitumenske zmesi.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2018
1DGRPHãþD
SIST EN 12697-26:2012
Bitumenske zmesi - Preskusne metode - 26. del: Togost
Bituminous mixtures - Test methods - Part 26: Stiffness
Asphalt - Prüfverfahren - Teil 26: Steifigkeit
Mélanges bitumineux - Méthodes d'essai pour enrobés à chaud - Partie 26 : Rigidité
Ta slovenski standard je istoveten z: EN 12697-26:2018
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 12697-26
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2018
EUROPÄISCHE NORM
ICS 93.080.20 Supersedes EN 12697-26:2012
English Version
Bituminous mixtures - Test methods - Part 26: Stiffness
Mélanges bitumineux - Méthodes d'essai - Partie 26: Asphalt - Prüfverfahren - Teil 26: Steifigkeit
Module de rigidité
This European Standard was approved by CEN on 26 February 2018.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12697-26:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and symbols . 6
3.1 Terms and definitions . 6
3.2 Symbols . 8
4 Principle . 9
5 Sample preparation . 9
5.1 Age of the specimens . 9
5.2 Drying of the specimens . 9
5.3 Dimensions and bulk density of the specimens . 9
5.4 Number of test specimens . 10
6 Checking of the testing equipment . 10
7 Test methods . 10
7.1 General . 10
7.2 Codification of tests . 10
7.2.1 Sinusoidal bending tests . 10
7.2.2 lndirect tensile test (pulse or cyclic) . 11
7.2.3 Cyclic or monotonous uniaxial tests . 11
7.2.4 Loading conditions . 11
7.2.5 Load amplitudes . 11
7.2.6 Loading frequencies . 11
7.3 Controlled strain rate loading . 12
7.3.1 Test method . 12
7.3.2 Loading conditions . 12
7.3.3 Strain amplitudes for direct tensile tests . 12
8 Temperatures . 13
9 Expression of results . 13
10 Test report . 15
10.1 Introduction . 15
10.2 General . 15
10.3 Information on specimens . 15
10.4 Information on test method . 15
10.5 Information on the test and results . 16
10.6 Optional information . 16
11 Precision . 16
Annex A (normative) Two point bending test on trapezoidal specimens (2PB-TR) or on
prismatic specimens (2PB-PR) . 17
A.1 Principle . 17
A.2 Equipment . 17
A.3 Specimen preparation . 19
A.4 Procedure . 20
Annex B (normative) Three point bending test on prismatic specimens (3PB-PR) and four
point bending test on prismatic specimens (4PB-PR). 21
B.1 Principle . 21
B.2 Equipment . 22
B.3 Specimen preparation . 23
B.3.1 Dimensions . 23
B.3.2 Sample manufacture . 23
B.4 Procedure . 24
Annex C (normative) Test applying indirect tension to cylindrical specimens (IT-CY) . 25
C.1 Principle . 25
C.2 Equipment . 25
C.2.1 General devices . 25
C.2.2 Test equipment . 25
C.3 Specimen preparation . 30
C.4 Mode of operation . 31
C.4.1 Mounting the specimen . 31
C.4.2 Stiffness measurement . 31
Annex D (normative) Direct tension-compression test on cylindrical specimens (DTC-CY) . 33
D.1 Principle . 33
D.2 Equipment . 33
D.3 Specimen preparation . 33
D.4 Mode of operation . 35
D.4.1 Stabilizing the specimen . 35
D.4.2 Procedure . 35
Annex E (normative) Test applying direct tension to cylindrical specimens (DT-CY) or to
prismatic specimens (DT-PR) . 36
E.1 Principle . 36
E.2 Equipment . 36
E.3 Specimen preparation . 36
E.3.1 Cylindrical specimen . 36
E.3.2 Prismatic specimen . 37
E.4 Mode of operation . 37
E.4.1 Stabilization of the specimen . 37
E.4.2 Procedure . 38
E.5 Derivation of the master-curve - Isotherms . 39
Annex F (normative) Test applying cyclic ind
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