SIST EN 17282:2020
(Main)Railway applications - Infrastructure - Under ballast mats
Railway applications - Infrastructure - Under ballast mats
This document is applicable to under ballast mats used in ballasted track and defines the test procedures and their evaluation criteria.
This document provides particular information in the following areas:
- test methods, test arrangements and evaluation criteria of under ballast mat;
- data supplied by the purchaser and by the supplier;
- definition of general process of design approval tests;
- definition of routine tests.
This document defines the specific test procedures for under ballast mat:
- stiffness tests;
- fatigue tests;
- number of tests for severe environmental condition.
This document also sets out procedures for testing fitness for purpose and provides information on quality monitoring as part of quality assurance procedures. This document does not, however, contain requirements pertaining to the functions of under ballast mats. It is the responsibility of the purchaser to define these requirements and to choose the optional tests.
Bahnanwendungen - Infrastruktur - Unterschottermatten
Dieses Dokument gilt für Unterschottermatten, die in Schottergleisen verwendet werden, und definiert die Prüfverfahren und deren Bewertungskriterien.
Dieses Dokument enthält spezielle Angaben über folgende Bereiche:
- Prüfverfahren, Prüfanordnungen und Bewertungskriterien für Unterschottermatten;
- Angaben die vom Kunden und vom Lieferanten bereitzustellen sind;
- Definition des allgemeinen Prozesses für Bauartzulassungsprüfungen;
- Definition von Prüfungen zur Qualitätssicherung.
Dieses Dokument definiert die spezifischen Prüfungen für Unterschottermatten:
- Steifigkeitsprüfungen;
- Ermüdungsprüfungen;
- Anzahl der Prüfungen für erschwerte Umgebungsbedingungen.
Dieses Dokument legt auch Verfahren zur Prüfung der Gebrauchstauglichkeit fest und es enthält Informationen hinsichtlich der Qualitätsüberwachung als Teil der Verfahren zur Qualitätssicherung. Dieses Dokument enthält hingegen keine Anforderungen, welche die Funktionen von Unterschottermatten betreffen. Es liegt in der Verantwortung des Kunden, diese Anforderungen festzulegen und optionale Prüfungen auszuwählen.
Applications ferroviaires - Infrastructure - Tapis sous ballast
Le présent document s'applique aux tapis sous ballast mis en œuvre dans les voies ballastées et définit les modes opératoires d'essais ainsi que leurs critères d'évaluation.
Ce document donne des informations particulières dans les domaines suivants :
— méthodes d'essais, montages d'essai et critères d'évaluation des tapis sous ballast ;
— données fournies par l'acheteur et par le fournisseur ;
— définition des processus généraux des essais de qualification ;
— définition des essais de série.
Ce document définit les modes opératoires d'essai spécifiques aux tapis sous ballast :
— essais de raideur ;
— essais de fatigue ;
— essais pour la résistance aux conditions environnementales extrêmes
Le présent document établit également des modes opératoires pour les essais d'aptitude à l'emploi et fournit des informations sur la gestion de la qualité dans le cadre des procédures d'assurance qualité. Cependant, ce document ne contient pas les exigences relatives aux fonctions des tapis sous ballast. La définition de ces exigences et le choix des essais facultatifs relèvent de la responsabilité de l'acheteur.
Železniške naprave - Infrastruktura - Pod balastnimi preprogami
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 17282:2020
01-december-2020
Železniške naprave - Infrastruktura - Pod balastnimi preprogami
Railway applications - Infrastructure - Under ballast mats
Bahnanwendungen - Infrastruktur - Unterschottermatten
Applications ferroviaires - Infrastructure - Tapis sous ballast
Ta slovenski standard je istoveten z: EN 17282:2020
ICS:
93.100 Gradnja železnic Construction of railways
SIST EN 17282:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 17282:2020
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SIST EN 17282:2020
EN 17282
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2020
EUROPÄISCHE NORM
ICS 93.100
English Version
Railway applications - Infrastructure - Under ballast mats
Applications ferroviaires - Infrastructure - Tapis sous Bahnanwendungen - Infrastruktur -
ballast Unterschottermatten
This European Standard was approved by CEN on 29 June 2020.
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 17282:2020 E
worldwide for CEN national Members.
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SIST EN 17282:2020
EN 17282:2020 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols and abbreviations . 9
5 Track categories . 11
6 Design approval tests and routine tests . 11
6.1 General . 11
6.2 Summary of design approval and routine tests . 12
6.3 Requirements for specification of UBM . 12
7 Data to be supplied . 18
7.1 General . 18
7.2 Data supplied by the purchaser . 18
7.3 Data supplied by the supplier . 18
8 Rules for use of UBM . 19
8.1 Rules for storage and installation of UBM . 19
8.2 Rules to ensure functionality of UBM. 19
9 Quality control . 20
10 Marking, labelling and packaging . 20
Annex A (normative) Geometric Ballast Plate (GBP) . 21
A.1 Design of the GBP . 21
A.2 Material of GBP . 21
Annex B (normative) Data sheet . 24
Annex C (normative) Bedding modulus measurement of UBM determined with GBP . 26
C.1 Static test procedure . 26
C.2 Low frequency dynamic test procedure . 30
Annex D (normative) Fatigue test on UBM in ballast box . 33
D.1 Principle . 33
D.2 Apparatus . 33
D.3 Procedure. 34
D.4 Test report . 35
Annex E (informative) Fatigue test on UBM with GBP . 36
E.1 Principle . 36
E.2 Apparatus . 36
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E.3 Procedure . 37
E.4 Test report . 38
Annex F (informative) Measurement of higher frequency vertical bedding modulus of UBM . 39
F.1 Principle . 39
F.2 Test parameters . 39
F.3 Procedure . 41
F.4 Test report . 42
Annex G (informative) Static horizontal bedding modulus of UBM . 43
G.1 Principle . 43
G.2 Apparatus . 43
G.3 Procedure . 44
G.4 Test report . 46
Annex H (informative) Water resistance and freeze–thaw resistance of UBM . 47
H.1 Principle . 47
H.2 Apparatus . 47
H.3 Procedure . 48
H.4 Test report . 50
Annex I (informative) Ageing test with high temperatures of UBM . 51
I.1 Principle . 51
I.2 Apparatus . 51
I.3 Procedure . 51
I.4 Test report . 52
Bibliography . 53
3
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SIST EN 17282:2020
EN 17282:2020 (E)
European foreword
This document (EN 17282:2020) has been prepared by Technical Committee CEN/TC 256 “Railway
applications”, the secretariat of which is held by DIN.
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 April 2021, and conflicting national standards shall be
withdrawn at the latest by April 2021.
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.
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.
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SIST EN 17282:2020
EN 17282:2020 (E)
Introduction
In a track for railway vehicles, the under ballast mat (UBM) is a structural element which is placed
between the substructure and the ballast layer. This document applies to the performance-related
properties of this mat.
5
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SIST EN 17282:2020
EN 17282:2020 (E)
1 Scope
This document is applicable to under ballast mats used in ballasted track and defines the test
procedures and their evaluation criteria.
This document provides particular information in the following areas:
— test methods, test arrangements and evaluation criteria of under ballast mats;
— data supplied by the purchaser and by the supplier;
— definition of general process of design approval tests;
— definition of routine tests.
This document defines the specific test procedures for under ballast mats:
— stiffness tests;
— fatigue tests;
— tests for severe environmental conditions.
This document also sets out procedures for testing fitness for purpose and provides information on
quality monitoring as part of quality assurance procedures. This document does not, however, contain
requirements pertaining to the functions of under ballast mats. It is the responsibility of the purchaser
to define these requirements and to choose the optional tests.
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 10027 (all parts), Designation systems for steels
EN 13450, Aggregates for railway ballast
EN 13674-1, Railway applications - Track - Rail - Part 1: Vignole railway rails 46 kg/m and above
EN ISO 1856, Flexible cellular polymeric materials - Determination of compression set (ISO 1856)
EN ISO 7500-1, Metallic materials - Calibration and verification of static uniaxial testing machines - Part
1: Tension/compression testing machines - Calibration and verification of the force-measuring system (ISO
7500-1)
EN ISO 9513:2012, Metallic materials - Calibration of extensometer systems used in uniaxial testing
(ISO 9513:2012)
EN 22768 (all parts), General tolerances (ISO 2768, all parts)
6
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EN 17282:2020 (E)
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:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
3.1
ballasted track
track in which the sleepers or bearers are supported by ballast
3.2
under ballast mat (UBM)
product of elastic material installed in track between substructure and ballast layer including all
integral parts of the product
Note 1 to entry: The main objectives of the application of under ballast mats are to reduce stiffness in the track
in order to improve the load distribution and/or to reduce vibrations transmitted to the surroundings and, by
doing so, provide vibration mitigation.
3.3
stiffness
force per unit deflection, measured under a uniaxial load
3.4
bedding modulus
pressure (force per surface) per unit deflection, measured under a uniaxial load
3.5
static stiffness or bedding modulus
force or pressure per unit deflection measured under a uniaxial static load
3.6
low frequency dynamic stiffness or bedding modulus
force or pressure per unit deflection measured under a uniaxial load which acts periodically at a
frequency of (5 to 20) Hz between specific force or pressure levels
Note 1 to entry: This value is determined mainly for calculation of dynamic deformation of tracks.
3.7
higher frequency dynamic stiffness or bedding modulus
force or pressure per unit deflection measured under a uniaxial load or displacement, which acts
periodically at a defined test frequency of (10 to 160) Hz at a specific pressure level
Note 1 to entry: This value will be determined as an input characteristic for vibration calculations. In contrast to
the determination of low frequency dynamic stiffness or bedding modulus, this test will be determined under
static preloading.
3.8
noise mitigation
reduction of secondary air-borne noise radiated by a construction (e.g. bridge)
Note 1 to entry: UBMs do not provide mitigation of airborne noise from the wheel and rail system.
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EN 17282:2020 (E)
3.9
vibration mitigation
reduction of emission of mechanical vibration and/or structure-borne noise into the surroundings
3.10
geometric ballast plate (GBP)
rigid steel plate with a geometrically structured surface simulating ballast contact
Note 1 to entry: See Annex A.
3.11
design approval test
test performed to demonstrate the compliance of the product properties to the requirements, set by the
purchaser
3.12
routine test
test performed to demonstrate the compliance of the product properties to the quality plan, set by the
supplier
3.13
purchaser
operator or user of the equipment, or the customer of the material on the user’s behalf
3.14
supplier
company / body responsible for the execution of purchaser’s requirements
Note 1 to entry: This can be the manufacturer or his designated representative, stockist, distributer, or agent.
The supplier is responsible for the use of the EN in response to the purchaser’s requirements and will ensure all
local conditions of purchase requirements are satisfied.
3.15
manufacturer
organization responsible for blending and processing material constituents, integrating them in the
manufacturing process and subsequently cutting, stamping or moulding to final dimensions
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EN 17282:2020 (E)
4 Symbols and abbreviations
Table 1 — Symbols
Symbols Characterization Units
2
A area mm
2
a acceleration in measurement of higher frequency stiffness m/s
3
C bedding modulus N/mm
d displacement mm
Δ variation -
F force kN
f frequency in measurement Hz
k stiffness N/mm
dB re
L point stiffness level for higher frequency stiffness
1 N/m
m mass kg
η loss factor -
N number of cycles -
2
p pressure N/mm
stiffening ratio between dynamic bedding modulus and static bedding
κ -
modulus
2
σ stress (compressive or tensile) N/mm
−1
ω angular frequency = 2π · f (for higher frequency stiffness) s
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EN 17282:2020 (E)
Table 2 — Indices of the symbols
Indices Characterization
0 for frequency, definition of natural frequency
i Hz value of frequency in measurement
af after
av average
be before
dyn low frequency dynamic
H higher frequency
h horizontal
max maximum
min minimum
'number' or i sequential number in order to differentiate types of measurements
pre preload
stat static
tend tendency
test test load
v vertical
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EN 17282:2020 (E)
5 Track categories
For track categories, see Table 3.
Table 3 — Definition of track categories (TC) for tracks using under ballast mats according to
their typical specifications and application
Distance of
sleeper
Rail profile
Axle load Speed supports
as defined in Typical application
[kN] [km/h] or rail
EN 13674-1
fastenings
[mm]
≥ 100 650 Urban rail or industrial
TC1 ≤ 100 49E1
and ≤ 130 (maximum 750) tracks
Urban rail or industrial
TC2 ≤ 160 ≤ 140 54E1 650
tracks
≤ 225 ≤ 200 60E1 600 Conventional main lines
High-speed lines and tracks
TC3 ≤ 200 ≤ 320 60E1 600
with large radius
≤ 250 ≤ 120 60E1 600 Freight lines
Freight with heavy axle loads
TC4 ≤ 300 ≤ 120 60E1 600
including Mixed traffic (TC3)
6 Design approval tests and routine tests
6.1 General
This clause defines the objectives of tests and of demanded information about the UBM.
The purchaser may define the test laboratory or validate the one proposed by the supplier.
The purchaser decides the way to choose the test sample units.
In order to be able to identify the UBM at a later date, the following values shall be indicated:
2
— the mass per area (kg/m ) of the product and all its components, see 6.3.1;
— the results of a suitable material analysis as selected by the manufacturer and approved by the
purchaser.
The supplier shall provide sufficient data to satisfy the objectives of the tests and/or the provision of
requested information in respect of the UBM including:
— the data sheet as described in Annex B;
— any transportation, storage and installation recommendations and procedures to preserve the
material characteristics and original performance.
Compliance with a given TC implies compliance with all lower TC except for results of the bedding
modulus measurements.
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6.2 Summary of design approval tests and routine tests
The design approval tests and the routine tests are stated in Table 4.
The values determined in product qualification testing shall act as the reference values for quality
assurance and quality monitoring procedures.
The frequency of routine tests is defined according to the quality plan of the supplier (see Clause 9).
Table 4 — Tests for UBM
Tests Clause Design approval tests Routine tests
Dimensions and mass 6.3.1 Mandatory Mandatory
Static and low frequency dynamic 6.3.2 Mandatory for static, 5 and 10 Hz, Mandatory for static
vertical bedding modulus optional for 20 Hz and 5 Hz at
determined with GBP (23 ± 5)°C
Higher frequency dynamic vertical 6.3.3 Optional (but recommended if Not Applicable
bedding modulus UBM is used for noise and
vibration mitigation)
Fatigue test with ballast 6.3.4 Mandatory Not Applicable
Fatigue test with GBP 6.3.5 Optional (but recommended if Not Applicable
UBM is used for noise and
vibration mitigation)
Compression set test 6.3.6 Optional Not Applicable
Static horizontal bedding modulus 6.3.7 Optional Not Applicable
Water resistance and freeze–thaw 6.3.8 Optional Not Applicable
resistance
Ageing test with high 6.3.9 Optional Not Applicable
temperatures
Resistance to chemical agents 6.3.10 Optional Not Applicable
Resistance to hydrocarbon 6.3.10 Optional Not Applicable
Resistance to ozone 6.3.10 Optional Not Applicable
Resistance to fire 6.3.10 Optional Not Applicable
Environment and end of life 6.3.11 Optional Not Applicable
6.3 Requirements for specification of UBM
6.3.1 Dimensions and mass
The supplier shall indicate the range of available dimensions with tolerances of the UBM and type of
joint (joint closing method as per supplier recommendation).
2
The thickness and mass per area (kg/m ) of UBM shall be indicated in order to enable identification.
Test arrangement:
Thickness and mass are measured with suitable instruments.
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Design approval:
All the UBM samples for design approval shall be checked according to technical documentations on
thickness and mass.
The purchaser shall approve the technical documentation on thickness and mass given by supplier.
The values determined in design approval tests shall be the reference values for routine tests.
6.3.2 Static and low frequency dynamic vertical bedding modulus determined with GBP
The static and the low frequency dynamic vertical bedding modulus determined with the GBP are
considered as key performance properties of the UBM.
Test arrangement:
The static and low frequency dynamic vertical bedding modulus of UBM with GBP shall be measured in
accordance with Annex C.
The low frequency dynamic bedding modulus is measured at (5 ± 1) Hz and (10 ± 1) Hz (and optional
frequency tests at (20 ± 2) Hz).
Design approval:
The test method shall be applied on three UBM samples. For profiled UBM with geometric elements (e.g.
dimples, cones, grooves, tubes) reasonable deviations from the standard sample size
(300 mm × 300 mm) are permitted, but shall be duly justified by the supplier and accepted by the
purchaser.
The alternative sample size shall not exceed the size of the testing area (300 mm × 300 mm) of the GBP,
in order to enable execution of all relevant GBP tests.
If the difference between the static bedding modulus with alternative size and sample of
(300 mm × 300 mm) is ≤ 5 %, the further tests shall be performed with the same amount and size of
samples as non-profiled UBM (300 mm × 300 mm).
The same UBM samples shall be tested for the static and for the low-frequency dynamic bedding
modulus.
If this test is performed at other temperatures than (23 ± 5) °C, then the median value sample (C )
dyn-5Hz
obtained at (23 ± 5) °C shall be selected for performing this test.
The purchaser shall define the following evaluation criteria for the design approval test for a track
category:
— minimum value ≤ C ≤ maximum value;
stat
— minimum value ≤ C or C ≤ maximum value.
dyn 5Hz dyn 10Hz
NOTE 1 Cdyn 20Hz is an informative value.
The supplier shall provide the reference values for the static and the low frequency dynamic bedding
modulus for routine test, based on the values of the design approval tests, in the range of the purchaser
acceptance criteria.
NOTE 2 The relationship between values measured between flat plates (FP) and Geometrical Ballast Plate
(GBP) is not linear and differs for static and dynamic bedding modulus values. Therefore, a direct comparison
between the values measured using the flat plates and geometric ballast plates GBP is not possible.
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6.3.3 Higher frequency dynamic vertical bedding modulus
This parameter is used to calculate and characterize the performance of noise and vibration mitigation
of UBM.
Test arrangement:
The higher frequency dynamic vertical bedding modulus of UBM with GBP shall be measured in
accordance with Annex F.
The testing routine and equipment are different from those for the determination of low frequency
dynamic bedding modulus. In contrast to the test of the low frequency dynamic bedding modulus C
dyn,
the test procedure to measure the higher frequency dynamic bedding modulus C is carried out with
H
static preloading and with smaller vibration amplitude. For this reason the values of the two moduli
may not be the same when measured at the same frequency, e.g. at 20 Hz, (see Figure 1).
Key
a curve for higher frequency dynamic bedding modulus (C )
H
b curve for low frequency dynamic bedding modulus (C )
dyn
C bedding modulus (CH, Cstat and Cdyn)
X frequency (Hz)
3
Y bedding modulus (N/mm )
Figure 1 — Example of a frequency-dependent bedding modulus curve
Design approval:
The test method shall be applied on the same three UBM samples already tested as in 6.3.2.
The purchaser shall define the evaluation criteria for the design approval test for a track category.
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6.3.4 Fatigue test in ballast
This test, which is carried out as a pulsed-load fatigue test, serves to verify fatigue strength in contact
with ballast under laboratory conditions by simulating vertical service loading in a ballast trough.
Test arrangement:
The fatigue test of UBM shall be measured in accordance with Annex D.
Design approval:
The test method shall be applied on one UBM sample.
The results of visual inspection shall comply with the purchaser's evaluation criteria for the design
approval test for a track category.
NOTE The variation of the characteristics can be determined with the fatigue test with GBP.
6.3.5 Fatigue test with GBP (long term variation of bedding modulus)
This test is intended to verify the stability of the static and low frequency dynamic bedding modulus.
Test arrangement:
The fatigue performance of UBM shall be measured in accordance with Annex E.
Design approval:
The test method shall be applied on one UBM sample.
The purchaser shall define the following evaluation criteria for the design approval test for a track
category:
— ΔC ≤ maximum value;
dyn,test
— ΔC ≤ maximum value;
stat
— ΔC ≤ maximum value.
dyn 5Hz
6.3.6 Compression set test
This test is intended to verify the behaviour (effect on thickness and on static and low frequency
bedding modulus) of the UBM’s elastic
...
SLOVENSKI STANDARD
oSIST prEN 17282:2018
01-november-2018
Železniške naprave - Infrastruktura - Pod balastnimi preprogami
Railway applications - Infrastructure - Under ballast mats
Bahnanwendungen - Infrastruktur - Unterschottermatten
Ta slovenski standard je istoveten z: prEN 17282
ICS:
93.100 Gradnja železnic Construction of railways
oSIST prEN 17282:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 17282:2018
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oSIST prEN 17282:2018
DRAFT
EUROPEAN STANDARD
prEN 17282
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2018
ICS 93.100
English Version
Railway applications - Infrastructure - Under ballast mats
Bahnanwendungen - Infrastruktur -
Unterschottermatten
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 256.
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, 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.
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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17282:2018 E
worldwide for CEN national Members.
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oSIST prEN 17282:2018
prEN 17282:2018 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols and abbreviations . 9
5 Track categories . 11
6 Design approval tests and routine tests . 11
6.1 General . 11
6.2 Summary of design approval and routine tests . 12
6.3 Requirements for specification of UBM . 12
6.3.1 Dimensions and mass . 12
6.3.2 Static and low frequency dynamic vertical bedding modulus determined with GBP . 13
6.3.3 Higher frequency vertical bedding modulus. 13
6.3.4 Fatigue test in ballast . 14
6.3.5 Fatigue test with GBP (long term variation of bedding modulus) . 15
6.3.6 Compression test . 15
6.3.7 Static horizontal bedding modulus of UBM . 16
6.3.8 Water resistance and freeze–thaw resistance of UBM . 16
6.3.9 Ageing test with high temperatures . 16
6.3.10 Resistance to other environmental parameters . 17
6.3.11 Environment and end of life . 17
7 Data to be supplied . 17
7.1 General . 17
7.2 Data supplied by the purchaser . 17
7.3 Data supplied by the supplier . 18
7.3.1 Prior to the design approval tests . 18
7.3.2 After the design approval tests and prior to first start-up of production . 18
8 Rules for use of UBM . 18
8.1 Rules for storage and installation of UBM . 18
8.2 Rules to ensure functionality of UBM. 19
9 Quality control . 19
10 Marking, labelling and packaging . 19
Annex A (normative) Geometric Ballast Plate (GBP) . 20
A.1 Design of the GBP . 20
A.2 Material of GBP . 20
Annex B (normative) Data sheet . 23
Annex C (normative) Bedding modulus measurement of UBM determined with GBP . 25
C.1 Static test procedure . 25
C.1.1 Principle . 25
C.1.2 Apparatus . 25
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C.1.3 Procedure . 26
C.1.4 Test report . 28
C.2 Low frequency dynamic test procedure . 28
C.2.1 Principle . 28
C.2.2 Apparatus . 28
C.2.3 Procedure . 29
C.2.4 Test report . 30
Annex D (normative) Fatigue test on UBM in ballast . 31
D.1 Principle . 31
D.2 Apparatus . 31
D.3 Procedure . 32
D.4 Test report . 33
Annex E (informative) Fatigue test on UBM with GBP . 34
E.1 Principle . 34
E.2 Apparatus . 34
E.3 Procedure . 35
E.4 Test report . 36
Annex F (informative) Measurement of higher frequency vertical bedding modulus of UBM . 37
F.1 Principle . 37
F.2 Test parameters . 37
F.2.1 Test arrangement . 37
F.2.2 UBM test sample . 38
F.2.3 Ambient Test temperature . 38
F.2.4 Vibration test velocity . 38
F.3 Procedure . 38
F.4 Test report . 39
Annex G (informative) Static horizontal bedding modulus of UBM . 41
G.1 Principle . 41
G.2 Apparatus . 41
G.3 Procedure . 42
G.4 Test report . 43
Annex H (informative) Water resistance and freeze–thaw resistance of UBM . 45
H.1 Principle . 45
H.2 Apparatus . 45
H.3 Procedure . 45
H.4 Test report . 47
Annex I (informative) Ageing test with high temperatures of UBM . 49
I.1 Principle . 49
I.2 Apparatus . 49
I.3 Procedure . 49
I.4 Test report . 50
Bibliography . 51
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European foreword
This document (prEN 17282:2018) has been prepared by Technical Committee CEN/TC 256 “Railway
applications”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
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Introduction
In a track for railway vehicles, the under ballast mat (UBM) is a product which is placed between the
substructure and the ballast layer. This document applies to the performance-related properties of this
mat.
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1 Scope
This document is applicable to under ballast mats used in ballasted track and defines the test
procedures and their evaluation criteria.
This document provides particular information in the following areas:
— test methods, test arrangements and evaluation criteria of under ballast mat;
— data supplied by the purchaser and by the supplier;
— definition of general process of design approval tests;
— definition of routine tests.
This document defines the specific test procedures for under ballast mat:
— stiffness tests;
— fatigue tests;
— number of tests for severe environmental condition.
This document also sets out procedures for testing fitness for purpose and provides information on
quality monitoring as part of quality assurance procedures. This document does not, however, contain
requirements pertaining to the functions of under ballast mats. It is the responsibility of the purchaser
to define these requirements and to choose the optional tests.
2 Normative references
The following referenced documents are indispensable for the application 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 10027 (all parts), Designation systems for steels
EN 13450, Aggregates for railway ballast
EN 13674-1, Railway applications – Track – Rail – Part 1: Vignole railway rails 46 kg/m and above
EN ISO 1856, Flexible cellular polymeric materials - Determination of compression set (ISO 1856)
EN ISO 7500-1, Metallic materials - Calibration and verification of static uniaxial testing machines –
Part 1: Tension/compression testing machines – Calibration and verification of the force-measuring
system (ISO 7500-1)
EN ISO 9513:2012, Metallic materials - Calibration of extensometer systems used in uniaxial testing
(ISO 9513:2012)
EN ISO 22768 (all parts), General tolerances (ISO 2768, all parts)
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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 http://www.iso.org/obp
3.1
ballasted track
track in which the sleepers or bearers are supported by ballast
3.2
under ballast mat (UBM)
product of resilient material installed in track between substructure and ballast layer including all
integral parts of the product
Note 1 to entry: The main objectives of the application of under ballast mats are to increase resilience in the
track in order to improve the load distribution and/or to reduce vibrations transmitted to the surroundings, and
by doing so providing vibration insulation.
3.3
stiffness
force per unit deflection, measured under a uniaxial force
3.4
bedding modulus
compressive stress (force per unit area) per unit deflection, measured under a uniaxial force
3.5
static stiffness or bedding modulus
force or stress per unit deflection measured under a uniaxial static load
3.6
low frequency dynamic stiffness or bedding modulus
force or stress per unit deflection measured under a uniaxial force which acts periodically at a
frequency of (5 – 20) Hz between specific force or stress levels
Note 1 to entry: This value is determined mainly for calculation of dynamic deformation of tracks.
3.7
higher frequency dynamic stiffness or bedding modulus
force or stress per unit deflection measured under a uniaxial force or displacement, which acts
periodically at a frequency of (10 – 160) Hz at a specific stress level
Note 1 to entry: This value will be determined as an input characteristic for vibration calculations. In contrast to
the determination of low frequency dynamic stiffness or bedding modulus, this test will be determined under
static preloading.
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3.8
noise mitigation
reduction of emission of structure borne noise into the surroundings
Note 1 to entry: UBM has no direct influence on noise-mitigation only in some indirect cases e.g. mitigate the
reradiated sound from bridge-structures.
3.9
vibration mitigation
reduction of emission of mechanical vibration and/or structure-borne noise into the surroundings
3.10
geometric ballast plate (GBP)
rigid steel plate with a geometrically structured surface simulating ballast contact
Note 1 to entry: See Annex A.
3.11
design approval test
test performed to demonstrate the compliance of the product properties to the requirements, set by the
purchaser
3.12
routine test
test performed to demonstrate the compliance of the product properties to the quality plan, set by the
supplier
3.13
purchaser
operator or user of the equipment, or the customer of the material on the user’s behalf
3.14
supplier
company /body responsible for the execution of purchaser’s requirements
Note 1 to entry: This can be the manufacturer or his designated representative, stockist, distributer, or agent.
The supplier is responsible for the use of the EN in response to the purchaser’s requirements and will ensure all
local conditions of purchase requirements are satisfied.
3.15
manufacturer
organization responsible for blending and processing material constituents, integrating them in the
manufacturing process and subsequently cutting, stamping or moulding to final dimensions
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4 Symbols and abbreviations
Table 2 — Symbols
Symbols Characterization Units
2
A area mm
2
a acceleration in measurement of higher frequency stiffness m/s
3
C bedding modulus N/mm
d displacement mm
Δ variation -
F force kN
f frequency in measurement Hz
k stiffness N/mm
dB re
L point stiffness level for higher frequency stiffness
1 N/m
m mass kg
η loss factor -
N number of cycles -
2
p pressure N/mm
stiffening ratio between dynamic bedding modulus and static bedding
κ -
modulus
2
σ stress (compressive or tensile) N/mm
−1
ω angular frequency = 2π · f (for higher frequency stiffness) s
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Table 3 — Indices of the symbols
Indices Characterization
0 for frequency, definition of natural frequency
i Hz value of frequency in measurement
af after
av average
be before
dyn low frequency dynamic
H higher frequency
h horizontal
max maximum
min minimum
'number' or i sequential number in order to differentiate types of measurements
pre preload
stat static
tend tendency
test test load
v vertical
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5 Track categories
For track categories, see Table 1.
Table 1 — Definition of Track Categories (TC) for tracks using under ballast mats according their
typical specifications and use cases
Distance of
sleeper
Rail profile
Axle load Speed supports
as defined in Typical application
[kN] [km/h] or rail
EN 13674-1
fastenings
[mm]
650 Urban light rail or industrial
TC1 ≥ 100 ≤ 130 ≤ 100 49E1
(maximum 750) tracks
Urban light rail or industrial
TC2 ≤ 160 ≤ 140 54E1 650
tracks
≤ 225 ≤ 200 60E1 600 Conventional main traffic lines
High-speed lines and tracks with
TC3 ≤ 200 ≤ 320 60E1 600
large radius
≤ 250 ≤ 120 60E1 600 Freight lines
Mixed traffic including freight
TC4 ≤ 300 ≤ 120 60E1 600
with heavy axle loads
6 Design approval tests and routine tests
6.1 General
This clause defines the objectives of tests and of demanded information about the UBM.
The purchaser should define the accepted laboratories.
The purchaser decides the way to choose the test sample units.
In order to be able to identify UBM at a later date, the following values shall be indicated:
— the specific mass of the product and all its components, see 6.3.1;
— the results of a suitable material analysis as selected by the manufacturer and approved by the
purchaser.
The supplier shall provide sufficient data to satisfy the objectives of the tests and/or the provision of
requested information in respect of UBM including:
— the data sheet as described in Annex B;
— any transportation, storage and installation recommendations and procedures to preserve the
material characteristics and original performance.
Compliance with Category TC4 implies compliance with Categories TC1 – TC4 except for bedding
modulus measurements.
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Compliance with Category TC2 implies compliance with Categories TC1 and TC2 except for bedding
modulus measurements.
6.2 Summary of design approval and routine tests
The design approval tests and the routine tests (for quality insurance and quality monitoring) are
stated in Table 4.
The values determined in product qualification testing shall act as the reference values for quality
assurance and quality monitoring procedures.
The frequency of routine tests is defined according to the quality plan of the supplier (see Clause 9).
Table 4 —Tests for UBM
Tests Clause Design approval tests Routine tests
Dimensions and mass 6.3.1 Mandatory Mandatory
Static and low frequency dynamic Mandatory for static
Mandatory for static, 5 and
vertical bedding modulus 6.3.2 and 5 Hz at
10 Hz, optional for 20 Hz
determined with GBP (23 ± 5)°C
Optional (but recommended if
Higher frequency dynamic vertical
6.3.3 UBM is used for Vibration Not Applicable
bedding modulus
mitigation)
Fatigue test with ballast 6.3.4 Mandatory Not Applicable
Optional (but recommended if
Fatigue test with GBP 6.3.5 UBM is used for vibrations Not Applicable
attenuation)
Compression test 6.3.6 Optional Not Applicable
Static horizontal bedding modulus 6.3.7 Optional Not Applicable
Water resistance and freeze–thaw
6.3.8 Optional Not Applicable
resistance of UBM
Ageing test with high temperatures 6.3.9 Optional Not Applicable
Resistance to chemical agents 6.3.10 Optional Not Applicable
Resistance to hydrocarbon 6.3.10 Optional Not Applicable
Resistance to ozone 6.3.10 Optional Not Applicable
Resistance to fire 6.3.10 Optional Not Applicable
Environment and end of life 6.3.11 Optional Not Applicable
6.3 Requirements for specification of UBM
6.3.1 Dimensions and mass
The supplier shall indicate the range of available dimensions with tolerances of the UBM and type of
joint (joint closing method as per supplier recommendation).
The thickness and mass of UBM shall be indicated in order to enable identification.
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Test arrangement:
Thickness and mass are measured with suitable instruments (type of instruments validated by the
purchaser).
Design approval:
All the UBM samples for design approval shall be checked according to technical documentations on
thickness and mass.
The purchaser shall approve the technical documentation on thickness and mass given by supplier.
The values determined in design approval tests shall be the reference values for routine tests.
6.3.2 Static and low frequency dynamic vertical bedding modulus determined with GBP
The measurement of the static and of the low frequency dynamic vertical bedding modulus of UBM
determined with GBP is a key performance property of the UBM.
Test arrangement:
The static and low frequency dynamic vertical bedding modulus of UBM with GBP shall be measured in
accordance with Annex C.
The low frequency dynamic bedding modulus is measured at (5 ± 1) Hz and (10 ± 1) Hz (and optional
frequency tests at (20 ± 2) Hz).
Design approval:
The test method shall be applied on 3 UBM samples. In the case of a profiled UBM (geometrically non-
homogeneous cross section in one or two directions), 6 samples are required: 3 with maximum working
surface, and 3 with minimum working surface. Average of those 6 values will be retained. If the
difference between the static bedding modulus with minimum working surface and with maximum
working surface is ≤ 5 %, the further tests shall be performed with the same amount of samples as non-
profiled UBM.
If this test is performed at other temperatures, then the median value sample shall be selected for
performing this test.
The purchaser shall define the following acceptance criteria for the design approval test for a track
category:
— minimum value ≤ C ≤ maximum value;
stat
— minimum value ≤ C or C ≤ maximum value.
dyn 5Hz dyn 10Hz
NOTE 1 Cdyn 20Hz is an informative value.
The supplier shall provide the reference values for the static and the low frequency dynamic bedding
modulus for routine test, based on the values of the design approval tests, in the range of the purchaser
acceptance criteria.
NOTE 2 The relationship between values measured between flat plates (FP) and Geometrical Ballast Plate
...
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