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

Status
Published
Public Enquiry End Date
14-Nov-2018
Publication Date
21-Oct-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
15-Oct-2020
Due Date
20-Dec-2020
Completion Date
22-Oct-2020

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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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SIST EN 17282:2020
EN 17282:2020 (E)

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

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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.
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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)
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SIST EN 17282:2020
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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SIST EN 17282:2020
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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SIST EN 17282:2020
EN 17282:2020 (E)
4 Symbols and abbreviations
Table 1 — Symbols
Symbols Characterization Units
A area mm
a acceleration in measurement of higher frequency stiffness m/s
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 -
p pressure N/mm
stiffening ratio between dynamic bedding modulus and static bedding
κ -
modulus
σ stress (compressive or tensile) N/mm
ω angular frequency = 2π · f (for higher frequency stiffness) s
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SIST EN 17282:2020
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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SIST EN 17282:2020
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:

— 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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SIST EN 17282:2020
EN 17282:2020 (E)
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).

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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SIST EN 17282:2020
EN 17282:2020 (E)
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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SIST EN 17282:2020
EN 17282:2020 (E)
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

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 )
b curve for low frequency dynamic bedding modulus (C )
dyn
C bedding modulus (CH, Cstat and Cdyn)
X frequency (Hz)
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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SIST EN 17282:2020
EN 17282:2020 (E)
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
...

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