SIST EN 1426:2025
(Main)Bitumen and bituminous binders - Determination of needle penetration
Bitumen and bituminous binders - Determination of needle penetration
This document specifies a method for determining the consistency of bitumen and bituminous binders. The normal procedure is described for penetrations up to 330 mm × 0,1 mm at 25 °C. The maximum penetration that can be tested is 500 mm × 0,1 mm.
WARNING The use of this document can involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.
Bitumen und bitumenhaltige Bindemittel - Bestimmung der Nadelpenetration
Dieses Dokument legt ein Verfahren zur Bestimmung der Konsistenz von Bitumen und bitumenhaltigen Binde¬mitteln fest. Das übliche Verfahren wird für Penetrationen bis zu 330 mm × 0,1 mm bei 25 °C beschrieben. Die maximale Penetration, die geprüft werden kann, beträgt 500 mm × 0,1 mm.
WARNUNG Die Anwendung dieses Dokumentes kann den Einsatz gefährlicher Stoffe, Arbeitsgänge und Geräte bedingen. Dieses Dokument erhebt nicht den Anspruch, alle mit ihrer Anwendung verbundenen Sicherheitsprobleme anzusprechen. Es liegt in der Verantwortung des Anwenders dieses Dokuments, geeignete Sicherheits- und Gesundheitsschutzmaßnahmen vorzusehen und im Vorfeld die Anwendbarkeit von einschränkenden Vorschriften zu klären.
Bitumes et liants bitumineux - Détermination de la pénétrabilité à l'aiguille
Le présent document prescrit une méthode pour la détermination de la consistance des bitumes et des liants bitumineux. Le mode opératoire s'applique normalement pour les pénétrabilités inférieures ou égales à 330 × 0,1 mm à 25 °C. La pénétrabilité maximale qu'il est possible de mesurer est de 500 × 0,1 mm.
AVERTISSEMENT L'utilisation de ce document implique l'usage de produits, d'opérations et d'équipements à caractère dangereux. Le présent document n'est pas censé aborder tous les problèmes de sécurité concernés par son usage. Il est de la responsabilité de son utilisateur d'établir des règles d'hygiène et de sécurité appropriées et de déterminer l'applicabilité des restrictions réglementaires avant utilisation.
Bitumen in bitumenska veziva - Določanje penetracije z iglo
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2025
Nadomešča:
SIST EN 1426:2015
Bitumen in bitumenska veziva - Določanje penetracije z iglo
Bitumen and bituminous binders - Determination of needle penetration
Bitumen und bitumenhaltige Bindemittel - Bestimmung der Nadelpenetration
Bitumes et liants bitumineux - Détermination de la pénétrabilité à l'aiguille
Ta slovenski standard je istoveten z: EN 1426:2024
ICS:
75.140 Voski, bitumni in drugi naftni Waxes, bituminous materials
proizvodi and other petroleum products
91.100.50 Veziva. Tesnilni materiali Binders. Sealing materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 1426
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 75.140; 91.100.50 Supersedes EN 1426:2015
English Version
Bitumens and bituminous binders - Determination of
needle penetration
Bitumes et liants bitumineux - Détermination de la Bitumen und bitumenhaltige Bindemittel -
pénétrabilité à l'aiguille Bestimmung der Nadelpenetration
This European Standard was approved by CEN on 16 September 2024.
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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1426:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 5
5 Apparatus . 6
6 Calibration and verification . 9
7 Sampling . 10
8 Procedure . 11
8.1 Preparation of the penetrometer. 11
8.2 Preparation of the penetration needles . 11
8.2.1 General. 11
8.2.2 Continuous check of penetration needles . 11
8.3 Tests in the constant temperature bath . 12
8.4 Tests outside the constant temperature bath . 12
8.5 Determination of the penetration . 12
8.5.1 First determinations . 12
8.5.2 Repeated determinations . 13
8.6 Maximum range of valid determinations . 13
8.7 Follow-up of the determination . 13
9 Expression of results . 13
10 Precision . 14
10.1 Repeatability, r . 14
10.2 Reproducibility, R . 14
11 Test report . 14
12 Figures . 15
Annex A (informative) Characteristics of the former reference thermometer . 17
Bibliography . 18
European foreword
This document (EN 1426:2024) has been prepared by Technical Committee CEN/TC 336 “Bitumens and
bituminous binders”, the secretariat of which is held by AFNOR.
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 May 2025, and conflicting national standards shall be
withdrawn at the latest by May 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1426:2015.
a) Clause 1, Scope, has been updated;
b) Clause 2, Normative references, has been updated;
c) Clause 5, Apparatus, has been updated and revised, so that:
— the specifications of the penetrometer (5.1) have been further detailed and a substructure of 5.1
has been introduced;
— the specifications of the penetration needle and ferrule (5.2) have been further detailed and a
substructure has been introduced;
— the specifications of the test sample container (5.3) have been further detailed to include
containers of different volumes for which a substructure has been introduced;
— the transfer equipment (5.5) now consists of a transfer bath and a transfer dish;
d) Clause 6, Calibration and verification, has been added containing the revised and expanded
specifications of former subclause 5.8;
e) Clause 7, Sampling, has been updated and further detailed regarding, e.g. filling the test sample
container, duration between test sample preparation and start of testing and the specification of the
ambient temperature;
f) Clause 8, Procedure, has been updated and revised to include, e.g. the updated apparatus and
automatic surface detection;
g) the former subclause 7.1, Preparation of the needle holder and needles, has been split up into new
subclause 8.1, Preparation of the penetrometer, and new subclause 8.2, Preparation of the
penetration needles, and the specifications of former subclause 5.2.2 on the continuous check of
penetration needles have been move there;
h) Clause 11, Test report, has been updated;
i) Figures 1 and 2 have been updated;
j) the Bibliography has been updated.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
1 Scope
This document specifies a method for the determination of the needle penetration of bitumens and
bituminous binders.
The standard procedure for the determination of the needle penetration (consistency) is described for
penetrations up to (330 × 0,1) mm at a temperature of 25 °C. The method also allows for penetrations up
to (500 × 0,1) mm using a longer needle.
WARNING — The use of this document can involve hazardous materials, operations and equipment. This
document does not purport to address all of the safety problems associated with its use. It is the
responsibility of the user of this document to establish appropriate safety and health practices and to
determine the applicability of regulatory limitations prior to use.
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 58, Bitumen and bituminous binders — Sampling bituminous binders
EN 1425, Bitumen and bituminous binders — Characterization of perceptible properties
EN 10088-3, Stainless steels — Part 3: Technical delivery conditions for semi-finished products, bars, rods,
wire, sections and bright products of corrosion resistant steels for general purposes
EN 12594, Bitumen and bituminous binders — Preparation of test samples
EN 12597, Bitumen and bituminous binders — Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 12597 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
penetration
distance expressed in tenths of a millimetre that a penetration needle will penetrate vertically into a test
sample of a material under specified conditions of temperature, load and loading duration
4 Principle
The penetration of a standard needle into a conditioned test sample is measured. For penetrations up to
(330 × 0,1) mm, the operating parameters are a test temperature of 25 °C, an applied load of 100 g, and a
loading duration of 5 s. For penetrations expected to be above (330 × 0,1) mm, the test temperature is
15 °C while the operating parameters regarding the applied load and the loading duration remain
unchanged.
The test procedures also provide for testing at other conditions, e.g. 200 g, 60 s and 5 °C for lower
temperature performance, to address different purposes.
5 Apparatus
The usual laboratory apparatus and glassware, together with the following, shall be used.
5.1 Penetrometer
5.1.1 The penetrometer shall be an apparatus that permits a needle holder to move vertically without
measurable friction and allows the determination of the penetration of the penetration needle (5.2) with
a maximum permissible measurement error of 0,1 mm. An example of a penetrometer is shown in
Figure 1.
NOTE Penetrometers are either operated manually or automatically.
5.1.2 The needle holder shall be such that the ferrule (5.2) can be held firmly. The needle holder shall
be readily detachable from the penetrometer. It shall have a mass of (47,50 ± 0,05) g.
5.1.3 The needle holder shall be either equipped with a weight of (50,00 ± 0,05) g underneath the
support as shown in Figure 1 or it shall be possible to attach the weight to the needle holder there.
The mass of the penetration needle and ferrule (5.2) plus the needle holder together with the weight shall
provide a moving load of (100,00 ± 0,10) g. The penetration needle plus needle holder together with the
weight are also called “needle dropping assembly”.
5.1.4 The penetrometer shall be equipped with a flat and horizontal base plate (stand) to accommodate
the constant temperature bath (5.4) or the transfer dish from the transfer equipment (5.5) as shown in
Figure 1. The needle dropping assembly shall move perpendicularly with reference to the base plate.
5.1.5 The penetrometer shall be located on a plane and stable surface without vibration.
5.1.6 Level adjustment of the penetrometer, e.g. by level adjustment screws, shall be possible. To
facilitate levelling, the penetrometer should be equipped with a built-in spirit level.
5.2 Penetration needle and fer
...
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