SIST EN 1427:2007
(Main)Bitumen and bituminous binders - Determination of the softening point - Ring and Ball method
Bitumen and bituminous binders - Determination of the softening point - Ring and Ball method
This European Standard specifies a method for the determination of the softening point of bitumen and bituminous binders in the range of 28 °C to 150 °C.
NOTE The method described is also applicable to bituminous binders that have been recovered from bituminous mixes, e.g. by extraction.
WARNING - Use of this European Standard can 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 des Erweichungspunktes - Ring- und Kugel-Verfahren
Bitumes et liants bitumineux - Détermination du point de ramollissement - Méthode Bille et Anneau
La présente Norme européenne prescrit une méthode de détermination du point de ramollissement des bitumes et des liants bitumineux, dans la plage des températures de 30 °C a 150 °C.
NOTE Cette méthode peut également s'appliquer pour les liants bitumineux extraits d'enrobés bitumineux.
AVERTISSEMENT - L'utilisation de la présente Norme européenne peut impliquer l'intervention de produits, d'opérations et d'équipements a caractere 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 zmehčišča - Metoda prstana in kroglice
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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 the softening point - Ring and Ball methodBitumes et liants bitumineux - Détermination du point de ramollissement - Méthode Bille et AnneauBitumen und bitumenhaltige Bindemittel - Bestimmung des Erweichungspunktes - Ring- und Kugel-VerfahrenTa slovenski standard je istoveten z:EN 1427:2007SIST EN 1427:2007en91.100.50Veziva. Tesnilni materialiBinders. Sealing materials75.140Voski, bitumni in drugi naftni proizvodiWaxes, bituminous materials and other petroleum productsICS:SIST EN 1427:20001DGRPHãþDSLOVENSKI
STANDARDSIST EN 1427:200701-julij-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1427March 2007ICS 75.140; 91.100.50Supersedes EN 1427:1999
English VersionBitumen and bituminous binders - Determination of the softeningpoint - Ring and Ball methodBitumes et liants bitumineux - Détermination du point deramollissement - Méthode Bille et AnneauBitumen und bitumenhaltige Bindemittel - Bestimmung desErweichungspunktes - Ring- und Kugel-VerfahrenThis 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 1427:2007: E
EN 1427:2007 (E) 2 Contents Page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.4 4 Principle.4 5 Reagents and materials.4 6 Apparatus.5 7 Preparation and preservation of laboratory samples and test samples.6 8 Procedure and reporting.7 9 Expression of results.8 10 Precision.8 11 Test report.9 Annex A (normative)
Characteristics of thermometers.13 Bibliography.14
EN 1427:2007 (E) 3 Foreword This document (EN 1427:2007) 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 1427:1999. 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 1427:2007 (E) 4 1 Scope This European Standard specifies a method for the determination of the softening point of bitumen and bituminous binders in the range of 28 °C to 150 °C. NOTE The method described is also applicable to bituminous binders that have been recovered from bituminous mixes, e.g. by extraction. WARNING — Use of this European Standard can 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 12594, Bitumen and bituminous binders – Preparation of test samples EN 12597, Bitumen and bituminous binders – Terminology EN ISO 3696:1995, Water for analytical laboratory use – Specification and test methods (ISO 3696:1987) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12597 and the following apply. 3.1 softening point temperature at which material under standardised test conditions attains a specific consistency 4 Principle Two horizontal discs of bituminous binder, cast in shouldered brass rings shall be heated at a controlled rate in a liquid bath while each supports a steel ball. The softening point shall be reported as the mean of the temperatures at which the two discs soften enough to allow each ball, enveloped in bituminous binder, to fall a distance of (25,0 ± 0,4) mm. 5 Reagents and materials 5.1 General Use only reagents of specified analytical grade and water conforming to grade 3 of EN ISO 3696:1995 unless otherwise specified.
EN 1427:2007 (E) 5 5.2 Bath liquid 5.2.1 Freshly boiled distilled water, or deionized water The use of freshly boiled distilled water or deionized water is essential to avoid trapping air bubbles on the surface of the test sample which can affect the results. 5.2.2 Glycerol, with a density (1 250 ± 10) kg/m3 at 20 °C, with a 99 % mass fraction purity. WARNING — Glycerol has a flash point of 160 °C, measured in accordance with EN ISO 2592. In temperatures above 100 °C, as glycerol may contain water due to hygroscopic properties, glycerol may splash on the heating elements and ignite. 5.3 Release agent, mixture of glycerol and dextrin or mineral talc, or another commercially available release agent. To prevent the bituminous binder adhering to the pouring plate when casting discs, the surface of the metal pouring plate shall be thinly coated just before use with the release agent.
NOTE 1 Applying the release agent coating is easier when the plate is warmed to approximately 40 °C. NOTE2 Instead of a release agent, other materials, e.g. baking paper, can be used. 6 Apparatus 6.1 Ring and Ball apparatus,
NOTE Either manual, semi-automatic or automatic, comprising the elements given in 6.1.1 to 6.1.9. 6.1.1 Rings, two, square-shouldered, in brass and conforming to the dimensions shown in Figure 1. 6.1.2 Pouring plate, flat, smooth, metal, approximately 50 mm × 75 mm and 1,5 mm to 2,0 mm thick with the edges turned down (see Figure 2) or a ceramic tile 5 mm to 6 mm thick. 6.1.3 Balls, stainless steel, two, (9,50 ± 0,05) mm in diameter, each having a mass of (3,50 ± 0,05) g. 6.1.4 Ball centering guides, brass, two for centring the steel balls, one for each ring. An example of ball centring guide is given in Figure 3. 6.1.5 Ring holder and assembly, stainless steel or brass, with a holder (A) to support the two rings in a horizontal position, conforming to the shape and dimensions shown in Figure 4, supported in the assembly shown in Figure 5. The bottom of the shouldered rings in the ring holder shall be (25,0 ± 0,4) mm above the upper surface of the bottom plate (B) (see Figure 6); the upper edge of the rings shall be (50 ± 3) mm below the surface of the bath liquid. 6.1.6 Bath, glass beaker capable of being heated, with not less than an 85 mm inside diameter and not less than a 120 mm depth from the bottom of the beaker, as shown in Figure 5. NOTE A squat form 600 ml beaker is suitable.
EN 1427:2007 (E) 6 6.1.7 Thermometers 6.1.7.1 Thermometers, calibrated, as specified in Annex A. 6.1.7.2 The appropriate thermometer shall be suspended in the assembly as shown in Figure 5 so that the bottom of the bulb is level with the bottom of the rings and within 13 mm of the rings, but not touching the rings or the ring holder. Other temperature measuring devices may be used instead of mercury stem thermometers, however, the mercury stem thermometer is the reference device and any alternative device employed shall be calibrated to provide the same readings as a mercury stem thermometer, recognising and allowing for changed thermal response times compared with the mercury thermometer. NOTE For the method described in which increasing temperatures are read during the test procedure, documented corrections should be determined in advance and applied to the observed readings. 6.1.8 Stirrer, propeller stirrer which operates smoothly or a magnetic stirrer/hot plate with suitably coated stirring bar of length approximately 40 mm and diameter 8 mm to ensure uniform heat distribution throughout the bath and to avoid turbulent flow throughout the bath. The stirrer shall be placed so that it does not disturb the samples when the test is in operation.
The rotation speed of the stirring bar shall be approximately 100 r/min. NOTE The stirrer blade of the pr
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