EN 12697-22:2020+A1:2023
(Main)Bituminous mixtures - Test methods - Part 22: Wheel tracking
Bituminous mixtures - Test methods - Part 22: Wheel tracking
This document describes test methods for determining the susceptibility of bituminous materials to deform under load. The test is applicable to mixtures with upper sieve size less than or equal to 32 mm.
The tests are applicable to specimens prepared from asphalt mixtures that have either been manufactured in a laboratory or cut from a pavement; test specimens are held in a mould with their surface flush with the upper edge of the mould.
The susceptibility of bituminous materials to deform is assessed by the rut formed by repeated passes of a loaded wheel at constant temperature. Three alternative types of devices can be used according to this document: large size devices, extra-large size devices and small size devices. With large size devices and extra-large size devices, the specimens are conditioned in air during testing. With small size devices, specimens are conditioned, in either air or water.
NOTE Large size and extra-large size devices are not suitable for use with cylindrical cores.
Asphalt - Prüfverfahren - Teil 22: Spurbildungstest
Dieses Dokument beschreibt Prüfverfahren zur Bestimmung der Verformungsanfälligkeit von Asphalt bei Belastung. Das Verfahren ist auf Asphalt mit einem Größtkorn von maximal 32 mm anwendbar.
Die Prüfungen sind auf aus Asphaltmischungen vorbereitete Probekörper anwendbar, die entweder in einem Labor hergestellt oder aus einer Fahrbahnbefestigung geschnitten wurden; die Probekörper werden so in Prüfformen gelegt, dass ihre Oberflächen mit der Oberkante der Form bündig abschließen.
Die Verformungsanfälligkeit von Asphalt wird anhand einer Spurrinne geprüft, die durch wiederholte Übergänge eines belasteten Rades bei konstanter Temperatur erzeugt wird. Nach diesem Dokument können drei verschiedene Arten von Prüfgeräten verwendet werden: Geräte mit besonders großem Rad, Geräte mit großem Rad und Geräte mit kleinem Rad. Bei Verwendung der Geräte mit großem und besonders großem Rad werden die Probekörper während der Prüfung an der Luft klimatisiert. Bei Verwendung des Geräts mit kleinem Rad werden die Probekörper entweder im Wasser oder an der Luft klimatisiert.
ANMERKUNG Die Geräte mit großem und besonders großem Rad sind nicht für die Prüfung von zylindrischen Bohrkernen geeignet.
Mélanges bitumineux - Méthodes d’essai - Partie 22 : Essai d’orniérage
Le présent document décrit les méthodes d’essais à suivre pour déterminer le comportement en déformation des matériaux bitumineux soumis à des charges roulantes. Cet essai s’applique aux mélanges dont les plus grandes dimensions granulaires sont inférieures ou égales à 32 mm.
Ces procédures peuvent être mises en œuvre sur des éprouvettes de mélange bitumineux qui ont été fabriquées en laboratoire ou prélevées sur une chaussée ; les éprouvettes sont placées dans un moule, leur surface affleurant la partie supérieure du moule.
La susceptibilité des matériaux bitumineux à se déformer est appréciée par l'ornière formée par passages répétés d'une roue chargée à température constante. Trois types d'appareils alternatifs peuvent être utilisés selon ce document : dispositifs de grandes dimensions, dispositifs de très grandes dimensions et dispositifs de petites dimensions. Avec des dispositifs de grandes dimensions et des dispositifs de très grandes dimensions, les éprouvettes sont conditionnées à l'air pendant les essais. Avec des dispositifs de petites dimensions, les éprouvettes sont conditionnées, soit dans l'air, soit dans l'eau.
NOTE Les dispositifs de grandes dimensions et les dispositifs extra-larges ne sont pas adaptés pour l’essai sur des éprouvettes cylindriques.
Bitumenske zmesi - Preskusne metode - 22. del: Preskus nastajanja kolesnic (vključuje dopolnilo A1)
Ta dokument opisuje preskusne metode za določevanje občutljivosti bitumenskih materialov na deformiranje pod obremenitvijo. Preskus se uporablja za zmesi z nazivno velikostjo zrn 32 mm ali manj.
Preskusi se uporabljajo za preskušance, pripravljene iz asfaltnih zmesi, izdelanih v laboratoriju ali izrezanih iz vozišča; preskušanci so vstavljeni v kalup, pri čemer je njihova površina poravnana z zgornjim robom kalupa.
Občutljivost bitumenskih materialov na deformacije se ocenjuje na podlagi kolesnic, ki nastanejo zaradi večkratnih kolesnih obremenitev pri stalni temperaturi. V skladu s tem dokumentom je mogoče uporabiti tri alternativne vrste naprav: velike naprave, zelo velike naprave in male naprave. Pri velikih in zelo velikih napravah se preskušanci obdelujejo v zraku med preskušanjem. V primeru malih naprav se preskušanci obdelujejo v zraku ali v vodi.
OPOMBA: Velike in zelo velike naprave niso primerne za uporabo z valjastimi jedri.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2024
Bitumenske zmesi - Preskusne metode - 22. del: Preskus nastajanja kolesnic
(vključuje dopolnilo A1)
Bituminous mixtures - Test methods - Part 22: Wheel tracking
Asphalt - Prüfverfahren - Teil 22: Spurbildungstest
Mélanges bitumineux - Méthodes d’essai - Partie 22 : Essai d’orniérage
Ta slovenski standard je istoveten z: EN 12697-22:2020+A1:2023
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 12697-22:2020+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2023
EUROPÄISCHE NORM
ICS 93.080.20 Supersedes EN 12697-22:2020
English Version
Bituminous mixtures - Test methods - Part 22: Wheel
tracking
Mélanges bitumineux - Méthodes d'essai - Partie 22 : Asphalt - Prüfverfahren - Teil 22: Spurbildungstest
Essai d'orniérage
This European Standard was approved by CEN on 18 November 2019 and includes Amendment approved by CEN on 20
November 2023.
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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12697-22:2020+A1:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols and abbreviated terms . 6
5 Principle . 7
6 Apparatus . 8
6.1 Large size devices . 8
6.2 !Extra-large" devices . 9
6.3 Small size devices for use with rectangular plates . 10
6.4 Small-size devices for use with cores . 11
7 Sampling and sample preparation . 12
7.1 Test portion . 12
7.2 Sampling and manufacture . 12
7.3 Thickness and surface regularity . 14
7.4 Transport and storage of unmounted specimens . 14
7.5 Sample preparation . 14
7.6 Storage . 15
7.7 Temperature probes . 15
8 Procedure for carrying out a single measurement . 15
8.1 Large size devices . 15
8.2 Extra-large size device . 16
8.3 Small size devices . 17
9 Calculation and expression of results . 18
9.1 Large size devices . 18
9.2 Extra-large size device . 18
9.3 Small size devices . 19
10 Test report . 22
10.1 Obligatory information . 22
10.2 Complementary information . 24
11 Precision . 24
11.1 General . 24
11.2 Laboratory prepared samples, proportional rut depth, large size devices . 24
11.3 Samples cored from a pavement and laboratory prepared samples, wheel-tracking
rate, small-size devices, conditioning in air . 24
11.4 Samples cored from a pavement and laboratory prepared samples, wheel-tracking
rate, small-size devices, conditioning in air, procedure B . 25
Bibliography . 29
European foreword
This document (EN 12697-22:2020+A1:2023) has been prepared by Technical Committee CEN/TC 227
“Road materials”, the secretariat of which is held by BSI.
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 June 2024, and conflicting national standards shall be
withdrawn at the latest by June 2024.
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 12697-22:2020".
This document includes Amendment 1 approved by CEN on 20 November 2023.
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
The following is a list of significant technical changes since the previous edition:
— the title no longer makes the method exclusively for hot mix asphalt;
— [Clause 2] ISO 48, Rubber, vulcanized or thermoplastic — Determination of hardness (hardness
between 10 IRHD and 100 IRHD), replaced by: ISO 48-2, Rubber, vulcanized or thermoplastic —
Determination of hardness — Part 2: Hardness between 10 IRHD and 100 IRHD; ISO 7619, Rubber,
vulcanized or thermoplastic — Determination of indentation hardness, replaced by: ISO 48-5,
Rubber, vulcanized or thermoplastic — Determination of hardness — Part 5: Indentation hardness
by IRHD pocket meter method;
— [3.5] Table 1 deleted;
— [Clause 4] symbols for properties in the different methods made more consistent and corrected
through the whole document. Table 2 replaced by new Table 1;
— [Clause 6] moulds added to the list of equipment. Modifications for clarity;
— [6.3.1.2] ISO 7619 and ISO 48 replaced by: ISO 48-5 and 48-2;
— [7.1] new clause added and the order of clauses changed;
— [7.2.1.1] vibratory compactor excluded as a method of sample preparation;
— [7.2.1.2] thickness for mixtures with upper sieve size larger than 22 changed to 80 mm;
— [7.5.1] the text has been modified for clarity. “Plaster of Paris” amended to holding medium;
— [7.6] storage time amended to max 42 days and requirement added for storing samples on a flat
surface;
— [8.1.7] deleted;
— [9.2.1] Formula (2) corrected;
— [9.3.1.2] Formula (7) corrected;
— [9.3.2.2] required rounding of WTS values specified;
AIR
— [9.3.3.2] required rounding of WTS values specified;
W
— [10.1.2] type of roller compactor required to be reported;
— [11.4] precision data for small device, procedure B (air) added;
A list of all parts in the EN 12697 series 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 describes test methods for determining the susceptibility of bituminous materials to
deform under load. The test is applicable to mixtures with upper sieve size less than or equal to 32 mm.
The tests are applicable to specimens prepared from asphalt mixtures that have either been
manufactured in a laboratory or cut from a pavement; test specimens are held in a mould with their
surface flush with the upper edge of the mould.
!The susceptibility of bituminous materials to deform is assessed by the rut formed by repeated
passes of a loaded wheel at constant temperature. Three alternative types of devices can be used
according to this document: large size devices, extra-large size devices and small size devices. With
large size devices and extra-large size devices, the specimens are conditioned in air during testing. With
small size devices, specimens are conditioned, in either air or water.
NOTE Large size and extra-large size devices are not suitable for use with cylindrical cores."
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 12697-6, Bituminous mixtures — Test methods — Part 6: Determination of bulk density of bituminous
specimens
EN 12697-7, Bituminous mixtures — Test methods for hot mix asphalt — Part 7: Determination of bulk
density of bituminous specimens by gamma rays
EN 12697-27, Bituminous mixtures — Test methods — Part 27: Sampling
EN 12697-33, Bituminous mixtures — Test method — Part 33: Specimen prepared by roller compactor
EN 12697-35, Bituminous mixtures — Test methods — Part 35: Laboratory mixing
ISO 48-2, Rubber, vulcanized or thermoplastic — Determination of hardness — Part 2: Hardness between
10 IRHD and 100 IRHD
ISO 48-5, Rubber, vulcanized or thermoplastic — Determination of hardness — Part 5: Indentation
hardness by IRHD pocket meter method
3 Terms and definitions
For 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 http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
nominal thickness
for laboratory prepared specimens, the target thickness, in millimetres, to which the specimens are to
be prepared
Note 1 to entry: Th
...
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