kSIST FprEN 17282:2020

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Železniške naprave - Infrastruktura - Pod balastnimi preprogamiBahnanwendungen - Infrastruktur - UnterschottermattenRailway applications - Infrastructure - Under ballast mats93.100Gradnja železnicConstruction of railwaysICS:Ta slovenski standard je istoveten z:prEN 17282oSIST prEN 17282:2018en,fr,de01-november-2018oSIST prEN 17282:2018SLOVENSKI

Bahnanwendungen æ Infrastruktur æ Unterschottermatten This draft European Standard is submitted to CEN members for enquiryä It has been drawn up by the Technical Committee

If this draft becomes a European Standardá CEN members are bounwhich stipulate the conditions for giving this European Standard the status of a national standard without any alterationä

This draft European Standard was established by CEN in three ofer language made by translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

Recipients of this draft are invited to submitá with their commentsá notification of any relevant patent rights of which they are aware and to provide supporting documentationä

Warning ã This document is not a European Standardä It is distributed for review and commentsä It is subject to change without notice and shall not be referred to as a European Standardä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä prEN

prEN 17282:2018 (E) 2 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 oSIST prEN 17282:2018

prEN 17282:2018 (E) 3 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

prEN 17282:2018 (E) 4 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. oSIST prEN 17282:2018

prEN 17282:2018 (E) 5 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. oSIST prEN 17282:2018

prEN 17282:2018 (E) 6 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) oSIST prEN 17282:2018

prEN 17282:2018 (E) 7 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:

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. oSIST prEN 17282:2018

prEN 17282:2018 (E) 8 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 oSIST prEN 17282:2018

prEN 17282:2018 (E) 9 4 Symbols and abbreviations Table 2 — Symbols Symbols Characterization Units A area mm2 a acceleration in measurement of higher frequency stiffness m/s2 C bedding modulus N/mm3 d displacement mm

variation - F force kN f frequency in measurement Hz k stiffness N/mm L point stiffness level for higher frequency stiffness dB re 1 N/m m mass kg

loss factor - N number of cycles - p pressure N/mm2 =stiffening ratio between dynamic bedding modulus and static bedding modulus -

prEN 17282:2018 (E) 10 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 oSIST prEN 17282:2018

prEN 17282:2018 (E) 11 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

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. oSIST prEN 17282:2018

prEN 17282:2018 (E) 12 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 vertical bedding modulus determined with GBP 6.3.2 Mandatory for static, 5 and 10 Hz, optional for 20 Hz Mandatory for static and 5 Hz at (23 ± 5)°C Higher frequency dynamic vertical bedding modulus 6.3.3 Optional (but recommended if UBM is used for Vibration mitigation) Not Applicable Fatigue test with ballast 6.3.4 Mandatory Not Applicable Fatigue test with GBP 6.3.5 Optional (but recommended if UBM is used for vibrations attenuation) Not Applicable Compression test 6.3.6 Optional Not Applicable Static horizontal bedding modulus 6.3.7 Optional Not Applicable Water resistance and freeze–thaw resistance of UBM 6.3.8 Optional Not Applicable 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. oSIST prEN 17282:2018

prEN 17282:2018 (E) 13 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

¶ maximum value. 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. 6.3.3 Higher frequency vertical bedding modulus This requirement should verify the performance of vibration mitigation of UBM. oSIST prEN 17282:2018

prEN 17282:2018 (E) 14 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 is different to the determination of low frequency dynamic bedding modulus. In contrast to the test of the low frequency dynamic bedding modulus Cdyn, the test procedure to measure the higher frequency dynamic bedding modulus CH 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 (CH) b curve for low frequency dynamic bedding modulus (Cdyn) C bedding modulus (CH, Cstat and Cdyn) X frequency (Hz) Y bedding modulus (N/mm3) 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