EN 12593:2015

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bitumen und bitumenhaltige Bindemittel - Bestimmung des Brechpunktes nach FraaßBitumes et liants bitumineux - Détermination du point de fragilité FraassBitumen and bituminous binders - Determination of the Fraass breaking point91.100.50Veziva. Tesnilni materialiBinders. Sealing materials75.140Voski, bitumni in drugi naftni proizvodiWaxes, bituminous materials and other petroleum productsICS:Ta slovenski standard je istoveten z:EN 12593:2015SIST EN 12593:2015en,fr,de01-september-2015SIST EN 12593:2015SLOVENSKI
STANDARDSIST EN 12593:20071DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12593
July 2015 ICS 75.140; 91.100.50 Supersedes EN 12593:2007English Version
Bitumen and bituminous binders - Determination of the Fraass breaking point
Bitumes et liants bitumineux - Détermination du point de fragilité Fraass
Bitumen und bitumenhaltige Bindemittel - Bestimmung des Brechpunktes nach Fraaß This European Standard was approved by CEN on 27 May 2015.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
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B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12593:2015 ESIST EN 12593:2015

Characteristics of the thermometer . 15 Annex B (informative)
Examples . 16
— the standard has been revised due to a normative reference to mercury thermometers. The changes involve mainly the text in 5.3.3 and the present Annex A is now informative; — regarding sample preparation the procedure for press-application of sample has been deleted, and the maximum sample preparation time of 10 min has been moved from an informative note to the normative text; — the explanation for determination of Fraass breaking point in the former 7.3 and 7.4 have been editorial changed into the present 7.3 and a flow diagram in a new Figure 7. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 12593:2015

(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. 5.2
Plate preparation equipment, used for application of the melted sample, and including: 5.2.1
Magnet block with a flat and smooth surface (Figure 1) holding one to three plates with a suitable cover (Figure 2). SIST EN 12593:2015

Metal support with two distinct zones: one temperature regulated and controlled, the other one cooled by water circulation. The support shall be horizontal and include an air bubble level and level adjustment screws. 5.3
Fraass breaking apparatus, as shown in Figure 3, consisting of the parts described in 5.3.1 to 5.3.3. NOTE Manual apparatus can be replaced by semi-automatic or automatic apparatus reproducing the same conditions. 5.3.1
Bending apparatus, as shown in Figure 4. The clearance between the two tubes, when assembled so that one can move longitudinally within the other, shall not exceed 1 mm. The tubes shall be made of a material that is of low thermal expansion (linear expansion coefficient: < 40 × 10-6 1/K ) and a poor conductor of heat (thermal conductivity: < 0,3 W/K · m). The plate shall be held by two steel clips as shown in Figure 5, the upper clip being attached to the bottom end of the outer tube, and the lower clip being attached to the inner tube by means of a metal connecting piece. The clips shall be coplanar, parallel to the axis of the tube, and secured against twisting. The thermometer shall be mounted in such a way that the connecting piece does not act as a shield between the thermometer bulb and ambient temperature and that the reservoir of the thermometer is the same distance between the wall of the inner tube and the middle of the pre-bended test plate when at rest. 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). Care is to be taken to ensure that all elements of the apparatus are vertical. NOTE Suitable bath liquids for the Dewar vessel are alcohols like ethanol, 1-propanol or 2-propanol. 5.3.3
Temperature measuring device or thermometer, solid stem, as specified in Annex A. A temperature measuring device (combining sensor and reading unit) shall: • have a range from at least -40 °C to 40 °C • be readable to 0,5 °C or less and • have an accuracy of 0,5 °C or better. Sensors based on platinum resistance thermometers have been found suitable but other principles are also allowed. The thermal response time of the sensor shall be comparable with the former used reference (see Annex A). The temperature measuring device shall be calibrated regularly. SIST EN 12593:2015

Gripping pliers, f
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