Corrugated bitumen sheets - Product specification and test methods

This European Standard specifies the technical properties and establishes the test and inspection methods for finished corrugated bitumen sheets on leaving the factory. It also provides for the evaluation of conformity of products with the requirements of this standard.

Bitumen-Wellplatten - Produktfestlegungen und Prüfverfahren

Dieses Dokument legt die technischen Eigenschaften von fertiggestellten Bitumen-Wellplatten bei Verlassen des Werks sowie die für sie geltenden Prüf  und Überwachungsverfahren fest. Es dient auch der Prüfung und Verifizierung der Leistungsbeständigkeit (AVCP) der Produkte im Hinblick auf die Anforderungen des vorliegenden Dokuments.

Plaques ondulées bitumées - Spécifications des produits et méthodes d'essai

Le présent document spécifie les propriétés techniques ainsi que les méthodes d'essai et de contrôle portant sur les plaques ondulées bitumées finies sorties d'usine. Il prévoit également l'évaluation et la vérification de la constance des performances (EVCP) des produits par rapport aux exigences du présent document.

Valovite bitumenske plošče - Specifikacija proizvoda in preskusne metode

General Information

Status
Not Published
Public Enquiry End Date
19-May-2020
Technical Committee
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
09-Apr-2020
Due Date
27-Aug-2020
Completion Date
02-Jun-2020

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SLOVENSKI STANDARD
oSIST prEN 534:2020
01-maj-2020
Valovite bitumenske plošče - Specifikacija proizvoda in preskusne metode
Corrugated bitumen sheets - Product specification and test methods
Bitumen-Wellplatten - Produktfestlegungen und Prüfverfahren
Plaques ondulées bitumées - Spécifications des produits et méthodes d'essai
Ta slovenski standard je istoveten z: prEN 534
ICS:
75.140 Voski, bitumni in drugi naftni Waxes, bituminous materials
proizvodi and other petroleum products
91.060.20 Strehe Roofs
oSIST prEN 534:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 534:2020
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oSIST prEN 534:2020
DRAFT
EUROPEAN STANDARD
prEN 534
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2020
ICS 91.100.50 Will supersede EN 534:2006+A1:2010
English Version
Corrugated bitumen sheets - Product specification and test
methods

Plaques ondulées bitumées - Spécifications des Bitumen-Wellplatten - Produktfestlegungen und

produits et méthodes d'essai Prüfverfahren

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 128.

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, 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.

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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 534:2020 E

worldwide for CEN national Members.
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Contents Page

European foreword ....................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms, definitions, symbols and abbreviations ................................................................................... 4

3.1 Terms and definitions ................................................................................................................................... 4

3.2 Symbols and abbreviations ......................................................................................................................... 4

4 General ................................................................................................................................................................ 5

5 Characteristics ................................................................................................................................................. 5

5.1 Geometrical properties ................................................................................................................................. 5

5.2 Mechanical properties ................................................................................................................................... 6

5.3 Physical properties ......................................................................................................................................... 6

5.4 Durability ........................................................................................................................................................... 7

5.5 Fire performance ............................................................................................................................................ 7

5.6 Sample preparation ........................................................................................................................................ 7

5.7 Cutting of the corrugated bitumen sheet ................................................................................................ 9

6 Test methods ................................................................................................................................................. 10

6.1 Geometrical properties .............................................................................................................................. 10

6.2 Mechanical properties ................................................................................................................................ 16

6.3 Physical properties ...................................................................................................................................... 22

6.4 Durability ........................................................................................................................................................ 26

6.5 Fire performance ......................................................................................................................................... 28

7 Assessment and verification of constancy of performance (AVCP) ........................................... 28

7.1 General ............................................................................................................................................................. 28

7.2 Type testing .................................................................................................................................................... 28

7.3 Factory production control (FPC) .......................................................................................................... 31

8 Marking ............................................................................................................................................................ 36

Annex A (normative) Frequencies of testing for factory production control ...................................... 37

Annex ZA (informative) Relationship of this European Standard with Regulation (EU)

No.305/2011 .................................................................................................................................................. 38

Bibliography ................................................................................................................................................................. 44

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European foreword

This document (prEN 534:2020) has been prepared by Technical Committee CEN/TC 128 “Roof

covering products for discontinuous laying and products for wall cladding”, the secretariat of which is

held by NBN.
This document will supersede EN 534:2006+A1:2010.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

For relationship with EU Regulation 305/2011, see informative Annex ZA, which is an integral part of

this document.
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1 Scope

This document specifies the technical properties and establishes the test and inspection methods for

finished corrugated bitumen sheets on leaving the factory. It also provides assessment and verification

of constancy of performance (AVCP) of products with the requirements of this document.

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.

CEN/TS 1187:2012, Test methods for external fire exposure to roofs

EN 13501-1:2018, Fire classification of construction products and building elements - Part 1:

Classification using data from reaction to fire tests

EN 13501-5:2016, Fire classification of construction products and building elements - Part 5:

Classification using data from external fire exposure to roofs tests

ISO 7892:1988, Vertical building elements - Impact resistance tests - Impact bodies and general test

procedures
3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.2 Symbols and abbreviations
L length of the sheet [mm]
w width of the sheet [mm]
H height of corrugations [mm]
f deflection of the sheet under stress [mm]
e nominal thickness [mm]
P mass of the sheet [kg/m ]
F load [N]
p pitch of corrugations [mm]
E squareness [mm/m]
α thermal coefficient [1/K]
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4 General

Corrugated bitumen sheets are produced using a homogeneous mixture of organic and/or inorganic

fibres and bitumen. The shape and the structure of corrugated bitumen sheets and the quality of the

raw materials guarantee the properties.

Corrugated bitumen sheets may be spun-dyed. They may also be supplied with a coloured or colourless

adhesive surface coating, which in turn may or may not have a covering of granules or fine flakes.

Corrugated bitumen sheets may be manufactured as a mono-layer or a multi-layer product.

Corrugated bitumen sheets are divided into category R and category S depending on their mechanical

properties. For category R, all mechanical properties have to pass the threshold values of that category.

For roofing applications, category R products are suitable for most climatic conditions, while Category S

products may require special installation depending on the climatic conditions.
For cladding applications, both categories are suitable.

The manufacturer’s installation guide shall be consulted to ensure that the product is installed in the

correct manner for its category.
5 Characteristics
5.1 Geometrical properties
5.1.1 Length

When tested according to 6.1.1, the tolerance on length L shall be + 1,0 %, – 0,2 %.

5.1.2 Width
When tested according to 6.1.2, the tolerance on width w shall be ± 2 %.
5.1.3 Thickness
When tested according to 6.1.3, the tolerance on thickness e shall be ± 10 %.

The thickness of the corrugated bitumen sheets shall be measured including any surface relief (surface

pattern) on the upper and lower sides (see Figure 4).

NOTE Due to the fact that the relief of the surfaces may be very different (e.g. from one manufacturer to the

other), the measurement of the thickness will give only some descriptive information and therefore cannot be

directly compared between different products.
5.1.4 Height of corrugations

When tested according to 6.1.4, the tolerance on the height of corrugations H shall be ± 6 %.

For corrugated bitumen sheets with various corrugation heights, all the declared corrugation heights

shall be measured.
5.1.5 Pitch of corrugations

When tested according to 6.1.5, the tolerance on the pitch of corrugations p shall be ± 3 %.

For corrugated bitumen sheets with various pitches and/or period of corrugation, all the declared

pitches and/or periods shall be measured.
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5.1.6 Squareness

When tested according to 6.1.6, the squareness E shall be less than or equal to 4 mm/m.

5.2 Mechanical properties
5.2.1 Bending under downward load

When tested according to 6.2.1, the minimum load for a deflection of 1/200 of a span of 620 mm shall

be:
— category R ≥ 1 400 N/m
— category S > 700 N/m

NOTE For calculation of maximum permissible load in manufacturers' installation guides, other methods can

be used particularly in case of sheet shapes that do not allow the distributed downward load described in 6.2.1 to

be applied.
5.2.2 Impact strength

When tested according to 6.2.2, the falling height with a span of 620 mm shall be:

— category R = 400 mm;
— category S = 250 mm.
This characteristic is not relevant for external wall finishing products.
5.2.3 Tearing strength
When tested according to 6.2.3, the tear threshold value shall be greater than:
— category R = 200 N;
— category S = 150 N.

Where, in the case of a corrugated bitumen sheet with various corrugation heights, the manufacturer

defines which corrugation has to be used for fixing, only this corrugation has to be tested.

5.3 Physical properties
5.3.1 Water impermeability

When tested according to 6.3.1, no drop of water shall pass through the sheet after 48 h.

5.3.2 Proportion of bitumen

When tested according to 6.3.2, the bitumen content shall be equal to or greater than 40 %.

The properties are measured without any covering of granules or fine flakes.
5.3.3 Mass

When tested according to 6.3.3, the tolerance on the declared mass (expressed in kg/m ) shall be

± 10 %.
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5.3.4 Homogeneity of the product

When tested according to 6.3.4, there shall be no area larger than 1 cm without bitumen.

5.3.5 Water absorption

When tested according to 6.3.5, the water absorption shall be less than 20 % of the mass of the sheet.

The properties are measured without any covering of granules or fine flakes.
5.3.6 Slip resistance

Due to their rough surfaces, corrugated bitumen sheets are not slippery products.

5.3.7 Load bearing capacity on the roof

Load bearing capacity depends on the method of support and fixing, which are not included in the scope

of this product standard.

NOTE The load level, the levels of safety and permissible deflection are defined in EUROCODES and/or

national building regulations.
5.4 Durability
5.4.1 Tearing strength after freeze/thaw ageing

When tested according to 6.4.1, the tearing strength shall not be lower than the initial threshold values

(5.2.3).
5.4.2 Water impermeability after freeze/thaw ageing

When tested according to 6.4.2, no drop of water shall pass through the sheet after 48 h.

5.4.3 Thermal coefficient
When tested according to 6.4.3, the value of α shall be less than 100 x 10 1/K.
5.5 Fire performance
5.5.1 Reaction to fire

When declared, the reaction to fire shall be tested and classified in accordance with 6.5.1.

5.5.2 External fire performance

When declared, the external fire performance shall be assessed according to 6.5.2.

5.6 Sample preparation

Details of sampling and sample preparation for both type testing and factory production control testing

are given in Table 1.
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Table 1 — Sampling and conditions of test specimens
Number Length
Width of Cutting of
of of Conditioning
samples the sheet
samples samples
6.1 Geometrical properties
6.1.1 Length No
Entire Entire
3 Required A
sheet sheet
6.1.2 Width No
Only if
6.1.3 Thickness
necessary
6.1.4 Height of corrugation No
Entire Entire
1 Required A
sheet sheet
Only if
6.1.5 Pitch of corrugation
necessary
6.1.6 Squareness No
6.2 Mechanical properties
Bending under downward Entire
6.2.1 5 Required B No
load sheet
Entire
6.2.2 Impact strength 5 Required B No
sheet
6.2.3 Tearing strength 5 3 corrug. 150 mm Required B See Figure 1
6.3 Physical properties
b a
6.3.1 Water impermeability 1 3 corrug 150 mm Required A See Figure 2
6.3.2 Proportion of bitumen 3 50 mm 100 mm Required A See Figure 2
Entire
6.3.3 Mass 3 Required B No
sheet
b a
6.3.4 Homogeneity of the product 12 ½ corrug 200 mm Required A See Figure 2
b a
6.3.5 Water absorption 3 2 corrug 200 mm Required B See Figure 2
6.4 Durability
Tearing strength after
b a
6.4.1 5 3 corrug 150 mm Required A See Figure 1
freeze/thaw ageing
Water impermeability after
b a
6.4.2 1 3 corrug 150 mm Required A See Figure 1
freeze/thaw ageing
6.4.3 Thermal coefficient 2 1 corrug. 250 mm Required B See Figure 1

A The test pieces shall be stored at laboratory conditions for at least 7 days.

B The test pieces shall be conditioned at (23 ± 2) °C and (50 ± 10) % relative humidity for at least 7 days.

In case of testing during production, the corrugated bitumen sheet may be tested without conditioning (A or

B). If the test cannot be performed immediately, the corrugated bitumen sheet shall be stored right away at

laboratory conditions.

If the corrugated bitumen sheet has a flat part, this shall be considered as one corrugation.

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For reaction to fire and external fire performance, the number of samples and the conditioning shall be

according to the requirements of EN 13501-1:2018 and EN 13501-5:2016 respectively.

5.7 Cutting of the corrugated bitumen sheet

Figures 1 and 2 show the positions from which samples shall be taken, with the numbers referring to

the test subclause in the standard. Samples shall not be taken within the area of 200 mm from either

end.
Dimensions in millimeters
Figure 1 — Positions from which samples are taken
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Dimensions in millimetres
Figure 2 — Positions from which samples are taken
6 Test methods
6.1 Geometrical properties
6.1.1 Length
6.1.1.1 Equipment

The test equipment is shown in Figure 3 and consists of a precision ruler with 0,5 mm divisions and a

stable flat plane.
6.1.1.2 Procedure

The measurement shall be taken while the sheet is supported on a stable flat plane.

The length shall be measured either at the crown of the corrugation or in the valley of the corrugation

on the second and penultimate corrugations.
The test is carried out on 3 different corrugated bitumen sheets.
6.1.1.3 Results

The result is the mean of the three mean values of the two measured values of each corrugated bitumen

sheet.
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Dimensions in millimetres
Key
1 test piece
2 stable flat plane
Figure 3 — Length and width measurement
6.1.2 Width
6.1.2.1 Equipment

The test equipment is shown in Figure 3 and consists of a precision ruler with 0,5 mm divisions and a

stable flat plane.
6.1.2.2 Procedure

The measurement shall be taken while the sheet is supported on a stable flat plane.

The width shall be measured at a position 100 mm from each end of the sheet.
The test is carried out on 3 different corrugated bitumen sheets.
6.1.2.3 Results

The result is the mean of the three mean values of the two measured values of each corrugated bitumen

sheet.
6.1.3 Thickness
6.1.3.1 Equipment

The equipment is shown schematically in Figure 4 and consists of a precision measuring device with 0,1

mm divisions and with flat contact surfaces of minimum 5 mm diameter.
6.1.3.2 Procedure

The measurements shall be taken on the flank of the corrugation or on the flat part, 50 mm from the

edge of the sheet. 10 different flanks and/or flat parts positions shall be measured, 5 measurements at

each end of the sheet.
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NOTE Cutting of the sheet can be necessary to ensure that the measurement can be taken correctly.

The measurement shall be performed with a maximum pressure of 2 N/cm , which guarantees a stable

measurement without compression of the surface.
The test is carried out on one corrugated bitumen sheet.
6.1.3.3 Results
The result is the arithmetic mean of the 10 measured values.
The result shall be expressed to the nearest 0,1 mm.
Dimensions in millimetres
Key
1 test piece
Figure 4 — Thickness measurement
6.1.4 Height of corrugations
6.1.4.1 Equipment

The test equipment is shown in Figure 5 and consists of a precision measuring device with 0,1 mm

divisions, a flat bar with a length longer than the corrugation pitch and a stable flat plane.

6.1.4.2 Procedure

The measurement shall be taken while the sheet is supported on a stable flat plane. The zero shall be

obtained by measuring the thickness of the flat bar before inserting the sheet.
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The flat bar shall be placed on two adjacent corrugations of the same height. The height of corrugations

shall be measured at 50 mm from each end of the sheet.

Four measurements, evenly distributed over the width of the corrugated sheet, leaving out the first and

last corrugations, shall be taken.
The test is carried out on one corrugated bitumen sheet.
6.1.4.3 Results
The result is the arithmetic mean of the 8 measured values.
The result shall be expressed to the nearest 0,1 mm.
Key
1 test piece
2 stable flat plane
3 measuring device
4 flat bar
Figure 5 — Height of corrugation measurement
6.1.5 Pitch of corrugations
6.1.5.1 Equipment

The equipment is shown in Figure 6 and consists of a precision metal ruler with 0,5 mm divisions, a

stable flat plane and a set of at least three iron tubes with the same diameter of 200 mm length (the

diameter of the tube shall be such as to touch both flanks of the corrugations).
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6.1.5.2 Procedure

Before measuring the pitch, the edge shall be free of burrs so that the tube is lying properly on the

flanks.

The measurement shall be taken while the sheet is supported on the stable flat plane, ensuring that the

valley of every corrugation is in contact with it.

At one end of the sheet, lay the tubes into the valleys of the corrugations with the end slightly out from

the end of the sheet. Measure the distance between the tubes to at least the nearest 0,5 mm.

On each side of the sheet, three measurements of the pitch and/or period shall be taken, evenly

distributed over the width of the corrugated sheet, leaving out the first and last pitch of corrugation.

The test is carried out on one corrugated bitumen sheet.
6.1.5.3 Results
The result is the arithmetic mean of the six measured values.
The result shall be expressed to at least the nearest 0,5 mm.
Key
1 test piece
2 metal tube
Figure 6 — Examples of pitch and period of corrugations
6.1.6 Squareness
6.1.6.1 Equipment

The equipment is shown in Figure 7 and consists of a stable flat plane exactly cut with 90° angle and

with a square edge on the bottom, one tube with a length 5 % longer than the length of the corrugated

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bitumen sheet and a diameter such that it touches both flanks of the corrugations, and a precision metal

ruler with 0,5 mm divisions.
6.1.6.2 Procedure

The corrugated bitumen sheet shall be put on a stable flat plane, so that the corrugated end of the sheet

is resting on the square edge at the end of the plane. The tube shall be put in the middle of the

corrugated bitumen sheet centrally into a valley of the corrugation.

The distances x and x , from the side of the tube to the edge of the stable flat plane shall be measured

1 2
(Figure 7).
The distance Lx is then measured between x and x .
1 2

After this the corrugated bitumen sheet shall be turned around so that the other corrugated end of the

sheet is resting against the square edge. The same measurements as before shall be taken.

The test is carried out on one corrugated bitumen sheet.
6.1.6.3 Result
The squareness E is calculated as:
E = │(x – x )│/ Lx [mm/m]
1 2
The result is the arithmetic mean of the two calculated values.
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The result is expressed to the nearest 1 mm.
Key
1 test piece
2 stable flat plane
3 tube
Figure 7 — Squareness measurement
6.2 Mechanical properties
6.2.1 Bending under downward load
6.2.1.1 Equipment
The equipment is shown in Figure 8. It consists of:
— strong horizontal bench larger than the corrugated bitumen sheet;

— four square tubes MSH 60 / 60 / 5 mm with a minimum length 10 % longer than the width of the

sheet;
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— six channels 40 / 35 / 5 mm, with a length 10 % longer than the width of the sheet;

— three supports;
— three square bars 20 / 20 mm x 40 mm;
— I-beam HEA 140 x 1 500 mm;

— hydraulic or electro-mechanical cylinder capable of supplying a force of 10 kN;

— force receiver, mounted between I-beam and the cylinder;

— one electronic elongation device accurate to 0,01 mm with a fixed disk of 20 mm on the top;

— precision metal ruler with 0,5 mm divisions.
6.2.1.2 Procedure
6.2.1.2.1 Set up

With reference to Figure 8, the four square tubes are placed on the bench, adjusted to the span of 620

mm and properly fixed to the bench. The corrugated bitumen sheet is placed on the square tubes and

adjusted centrally under the cylinder. In the case of an irregular profile, the nearest bottom of a

corrugation is always at the centre of the cylinder.

The six channels with the three supports are placed loose on the sheet and adjusted. In the middle of

each support a square bar is placed as a joint for the I-beam.
The total mass of the preload shall be equal to (60 ± 5) kg.

The elongation device is mounted rigid and vertical underneath the test piece. The position shall be

exactly in the middle between the two square tubes and at the bottom of a corrugation directly central

under the cylinder.

After applying the six channels, three supports, I-beam, the force receiver and the elongation device,

ensure that there is no gap between the corrugated bitumen sheet and the two central square tubes. If a

gap exists, the corrugated bitumen sheet is not suitable for this test and shall be changed.

Once this check has been made, the electronic elongation device is set to zero.
6.2.1.2.2 Area of the load

The width w of the corrugated bitumen sheet is measured before the test according to 6.1.2. The length

shall be three times the distance between the square tubes, i.e. 3 x 620 mm = 1 860 mm.

The area over which the load is distributed shall be calculated as:
6 2
load area = w x 1 860 / 1 x 10 [m ]
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All dimensions are in millimetres
Key
1 test piece 5 three supports 9 force receiver
2 four square tubes 6 three square bars 10 elongation device
3 horizontal bench 7 I-beam 11 check
4 six channels 8 cylinder
Figure 8 — Bending under downward load
6.2.1.2.3 Test execution
The speed of the cylinder shall be between 1 mm/min to 3 mm/min.

Force and elongation shall be recorded simultaneously, until the deflection is greater than 4,0 mm.

The test is carried out on five different corrugated bitumen sheets.
6.2.1.3 Results

Five graphs (one for each sheet) giving deflection as a function of force shall be produced. The force at

an elongation of 3,1 mm shall be read off these graphs. The uniform load for each sheet shall be

calculated using:
uniform load = force / load area [N/m ]

The result is the arithmetic mean of the five corrugated bitumen sheets, expressed to the nearest

10 N/m .
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6.2.2 Impact strength
6.2.2.1 Equipment
The equipment is shown in Figure 9 and comprises:
— strong horizontal bench with a minimum height of 700 mm;
— four supports made of a metal square tube profile MSH 60 / 60 / 5 mm;
— four supports made of wood 60 / 60 mm;
— eight clamps;

— sphero-conical bag (ISO 7892:1988) filled with sand having a total mass of 40 kg;

— release hook.
6.2.2.2 Procedure

The corrugated bitumen sheet shall be laid on the construction and fixed by the four wooden supports,

using clamps or screws without compressing the height of the sheet.

The sack shall be positioned to have a height of fall between the bottom of the sack and the crown of the

corrugations, at mid-point between two supports and at the centre of the s
...

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