EN 12593:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bitumen and bituminous binders - Determination of the Fraass breaking pointBitumes et liants bitumineux - Détermination du point de fragilité FraassBitumen und bitumenhaltige Bindemittel - Bestimmung des Brechpunktes nach FraaßTa slovenski standard je istoveten z:EN 12593:2007SIST EN 12593:2007en91.100.50Veziva. Tesnilni materialiBinders. Sealing materials75.140Voski, bitumni in drugi naftni proizvodiWaxes, bituminous materials and other petroleum productsICS:SIST EN 12593:20001DGRPHãþDSLOVENSKI
STANDARDSIST EN 12593:200701-julij-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12593March 2007ICS 75.140; 91.100.50Supersedes EN 12593:1999
English VersionBitumen and bituminous binders - Determination of the Fraassbreaking pointBitumes et liants bitumineux - Détermination du point defragilité FraassBitumen und bitumenhaltige Bindemittel - Bestimmung desBrechpunktes nach FraaßThis 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 12593:2007: E

Characteristics of the thermometer.15

(20,0 ± 0,2) mm wide and (0,15 ± 0,02) mm thick. The plates shall be kept flat and protected from corrosion when not in use. Any plate that becomes visibly curved or corroded shall be discarded.

By rotating the crank handle (see Figure 3), which operates a mechanism consisting of a cone of hardened metal, as shown in Figure 6, and a setting screw, the inner tube may be moved up and down relative to the outer tube. Eleven rotations of the handle shall permit the initial distance between the upper and lower clip of (40,0 ± 0,1) mm to be steadily reduced by (3,5 ± 0,1) mm. A steel strut may be used to fix the initial bending of the steel test plate. The height of the strut is such that, when in place, the initial distance between the upper and the lower clips is (40,0 ± 0,1) mm. Use of a semi automatic bending apparatus, from which the raising and lowering of the inner tube is controlled, for example, by a motor-driven cam disc, or of fully automatic apparatus, in which the reduction in temperature is controlled and the breaking point is automatically indicated, is permitted, provided that the test conditions specified in this standard are complied with. 5.3.2 Cooling apparatus, as shown in Figure 3, and comprising the inner test tube (5), the outer test tube (4) and the glass cylinder (1). The bungs (6), (7) and (8) shall be made of either rubber or cork. The bore (9) in the bung (7) may be used for introducing solid carbon dioxide. The cylinder (1) and the inner test tube (5) shall contain a small amount of drying agent. A transparent Dewar vessel having an inside diameter of (75 ± 5) mm may be substituted for the outer test tube (4) and the cylinder (1). NOTE 1 Care should be taken to ensure that all elements of the apparatus are vertical. NOTE 2 Suitable bath liquids for the Dewar vessel are alcohols like ethanol, 1-propanol or 2-propanol. 5.3.3 Thermometer, solid stem, as specified in Annex A. 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 so as to provide the same readings as would be provided by the mercury stem thermometer, recognising and allowing for changed thermal response times compared with the mercury thermometer. NOTE For this test method, in which decreasing temperatures are read during the test procedure, documented corrections should be determined in advance and applied to the observed readings.

If the remaining amount of bituminous binder is less than required, prepare a new plate. Allow the plate to rest for 1 min to 2 min to ensure that the entire plate is evenly coated with the bituminous binder and the surface is flat. By carefully fanning with a flame, dispel any small air bubbles, which may have become entrapped, avoiding local overheating. Move the magnet block supporting the plate to the cooling side of the support with the help of the cover. NOTE 3 The total plate preparation should not take more than 10 min. Leave the
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