EN 12697-22:2020

SLOVENSKI STANDARD
01-maj-2020
Nadomešča:
SIST EN 12697-22:2004+A1:2007
Bitumenske zmesi - Preskusne metode - 22. del: Preskus nastajanja kolesnic
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
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
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 93.080.20 Supersedes EN 12697-22:2003+A1:2007
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.

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, 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12697-22:2020 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 . 7
6.1 Large size devices . 7
6.2 Extra large devices . 8
6.3 Small size devices for use with rectangular plates . 9
6.4 Small-size devices for use with cores . 11
7 Sampling and sample preparation . 11
7.1 Test portion . 11
7.2 Sampling and manufacture . 12
7.3 Thickness and surface regularity . 13
7.4 Transport and storage of unmounted specimens . 14
7.5 Sample preparation . 14
7.6 Storage . 14
7.7 Temperature probes . 14
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 . 16
9 Calculation and expression of results . 17
9.1 Large size devices . 17
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 . 23
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) 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 August 2020, and conflicting national standards shall
be withdrawn at the latest by August 2020.
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 12697-22:2003+A1:2007.
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.
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, Turkey 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 device can be used according to
this standard: 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/ui
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: The target thickness is the required thickness that is targeted when making the specimen.
3.2
rut depth
reduction in the thickness of a test specimen, in millimetres, caused by repeated passes of a loaded
wheel
3.3
test surface
surface of the test specimen on which the loaded wheel runs
3.4
single test result
value obtained by applying this document, once, to a single test portion
...