SIST EN 1426:2007
(Main)Bitumen and bituminous binders - Determination of needle penetration
Bitumen and bituminous binders - Determination of needle penetration
This European Standard specifies a method for determining the consistency of bitumen and bituminous binders. Normal procedure is described for penetrations up to 330 mm ? 0,1 mm, but for penetrations above this value, up to 500 mm ? 0,1 mm, different operating parameters are necessary.
WARNING — Use of this European Standard may involve hazardous materials, operations and equipment. This European Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this European Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Bitumen und bitumenhaltige Bindemittel - Bestimmung der Nadelpenetration
Bitumes et liants bitumineux - Détermination de la pénétrabilité a l'aiguille
La présente Norme européenne définit une méthode pour la détermination de la consistance des bitumes et des liants bitumineux. Le mode opératoire courant s'applique pour les pénétrations inférieures ou égales a 330 ´ 0,1 mm. Pour les pénétrations supérieures a cette valeur, des conditions opératoires différentes sont prévues.
AVERTISSEMENT - L'utilisation de la présente Norme européenne peut impliquer l'intervention de produits, d'opérations et d'équipements a caracteres dangereux. La présente Norme européenne n'est pas censée aborder tous les problemes de sécurité concernés par son usage. Il est de la responsabilité de l'utilisateur de consulter et d'établir des regles de sécurité et d'hygiene appropriées et de déterminer l'applicabilité des restrictions réglementaires avant utilisation.
Bitumen in bitumenska veziva - Določanje penetracije z iglo
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bitumen and bituminous binders - Determination of needle penetrationBitumes et liants bitumineux - Détermination de la pénétrabilité a l'aiguilleBitumen und bitumenhaltige Bindemittel - Bestimmung der NadelpenetrationTa slovenski standard je istoveten z:EN 1426:2007SIST EN 1426:2007en91.100.50Veziva. Tesnilni materialiBinders. Sealing materials75.140Voski, bitumni in drugi naftni proizvodiWaxes, bituminous materials and other petroleum productsICS:SIST EN 1426:20001DGRPHãþDSLOVENSKI
STANDARDSIST EN 1426:200701-julij-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1426March 2007ICS 75.140; 91.100.50Supersedes EN 1426:1999
English VersionBitumen and bituminous binders - Determination of needlepenetrationBitumes et liants bitumineux - Détermination de lapénétrabilité à l'aiguilleBitumen und bitumenhaltige Bindemittel - Bestimmung derNadelpenetrationThis European Standard was approved by CEN on 3 February 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1426:2007: E
EN 1426:2007 (E) 2 Contents Page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.4 4 Principle.4 5 Apparatus.5 6 Sampling.7 7 Procedure.7 8 Expression of results.9 9 Precision.9 10 Test report.10 Annex A (normative)
Characteristics of thermometers.13 Bibliography.14
EN 1426:2007 (E) 3 Foreword This document (EN 1426:2007) has been prepared by Technical Committee CEN/TC 336 “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 September 2007, and conflicting national standards shall be withdrawn at the latest by September 2007. This document supersedes EN 1426:1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 1426:2007 (E) 4 1 Scope This European Standard specifies a method for determining the consistency of bitumen and bituminous binders. Normal procedure is described for penetrations up to 330 × 0,1 mm, but for penetrations above this value, up to 500 × 0,1 mm, different operating parameters are necessary. WARNING — Use of this European Standard may involve hazardous materials, operations and equipment. This European Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this European Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 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 58, Bitumen and bituminous binders – Sampling bituminous binders EN 1425, Bitumen and bituminous binders – Characterization of perceptible properties EN 1427, Bitumen and bituminous binders – Determination of the softening point – Ring and Ball method EN 10088-3, Stainless steels – Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes EN 12594, Bitumen and bituminous binders – Preparation of test samples EN 12597, Bitumen and bituminous binders – Terminology ISO 6508-1, Metallic materials – Rockwell hardness test – Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12597 and the following applies. 3.1 penetration consistency, expressed as the distance in tenths of a millimetre that a standard needle will penetrate vertically into a sample of the material under specified conditions of temperature, load and loading duration 4 Principle The penetration of a standard needle into a conditioned test sample shall be measured. For penetrations up to approximately 330 × 0,1 mm the operating parameters shall be a test temperature of 25 °C, an applied load of 100 g, and a loading duration of 5 s. For penetrations expected above approximately
330 × 0,1 mm, the test temperature shall be reduced to 15 °C but the operating parameters of the applied load and the loading duration remain unchanged.
EN 1426:2007 (E) 5 5 Apparatus
Usual laboratory apparatus and glassware, together with the following: 5.1 Penetrometer; apparatus that permits a needle holder to move vertically without measurable friction and enables the needle penetration to be determined to the nearest 0,1 mm. The needle holder shall be readily detachable from the apparatus and shall have a mass of (47,50 ± 0,05) g. A weight of (50,00 ± 0,05) g suitable for attachment to the needle holder shall be provided if not already fixed to the needle holder. The stand upon which the specimen container, or transfer dish rests shall be flat and horizontal. The 50 g weight shall be fixed underneath the support (see Figure 1). NOTE An example of a suitable penetrometer is shown in Figure 1. To facilitate levelling, the penetrometer should be provided with level adjustment screws. Equipment that controls the penetration time automatically may also be used. Such equipment shall be checked regularly for correct penetration time (see 5.6). 5.2 Penetration needle, (see Figure 2), made from fully hardened, tempered and polished stainless steel of type X105CrMo17 (1.4125), conforming to EN 10088-3, taking into account that it is not necessary to comply with the minimum content of molybdenum specified in that standard, and of Rockwell hardness C54 to C60 determined in accordance with ISO 6508-1. The cylindrical body of the needle shall have a diameter of
1,00 mm to 1,02 mm and one end shall be symmetrically tapered by grinding to a cone with an angle of 9 °
(10 ± 30) ' over the entire cone length. The cone shall be co-axial with the cylindrical body of the needle; the total axial variation of the intersection between the conical and cylindrical surfaces shall not exceed 0,2 mm. The conical tip of the needle shall be ground square to the axis of the needle within 2 ° until the diameter at the tip is between 0,14 mm and 0,16 mm. The edge of the ground tip shall be sharp and free from burrs. For penetrations up to 330 × 0,1 mm the length of the needle shall be approximately 50 mm. For penetrations between 330 × 0,1 mm and 500 × 0,1 mm, use needles that shall conform to the requirements given for mass and dimensions, but which are longer in length so that the ferrule into which the needle is fixed does not penetrate the material undergoing testing. The needle shall be rigidly mounted in a brass or stainless steel ferrule with 5 mm to 10 mm of the needle inside the ferrule. The run-out of the needle tip or any part of the needle relative to the ferrule axis shall not exceed 1,0 mm. The ferrule shall be (3,20 ± 0,05) mm in diameter and (38 ± 1) mm in length. The mass of the ferrule and needle assembly shall be (2,50 ± 0,05) g. NOTE 1 A drill hole at the end of the ferrule or a flat on the side is possible to control the mass. Individual identification marking shall be engraved or stamped on the ferrule of each needle; the same marking shall not be repeated by the manufacturer within a 3 year period. The needle shall be inspected visually for corrosion and shape and the masses of the needle and spindle checked sufficiently regularly to assure satisfactory condition. NOTE 2 The mass of the needle plus needle holder together with the additional mass of the weight provides a moving load of 100 g. It is important that initial and continued compliance with the stringent requirements for the needle is maintained. Certification of compliance can be obtained through the needle supplier or a qualified agency. NOTE 3 For information concerning tolerances of the needle (Figure 2), see ISO 286-1, ISO 1829, ISO 1101 and ISO 1302.
EN 1426:2007 (E) 6 5.3 Test sample container, metal or glass, cylindrical, flat-bottomed. The internal depth of the container shall be appropriate in order to contain a bituminous sample of which the depth shall be at least 10 mm greater than the expected penetration, and not less than 35 mm. The internal diameter of the container shall be at least 55 mm and shall not exceed 70 mm. NOTE 1 Recommended dimensions of the test sample container are given in Table 1. Table 1 — Recommended dimensions of the test sample container Penetration (0,1 mm) Internal depth (mm) Internal diameter (mm) penetration < 160 35 55 160 ≤ penetration ≤ 330 45 70
If insufficient binder is available (e.g. if it was obtained by extraction of a bituminous mix core or while monitoring short- or long-term ageing development) use a small stainless steel container. In order to fulfil the requirements of 7.4.2, the container shall have an inner diameter of at least 35 mm and a wall thickness between 1,5 mm and 2,0 mm. For penetrations lower than 100 x 0,1 mm, the inner height of the container shall be at least 20 mm. For penetrations from 100 x 0,1 mm up to 200 x 0,1 mm, the inner height of the container shall be at least 30 mm. To en
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