DIN EN 12607-3-2015 Bitumen and bituminous binders - Determination of the resistance to hardening under influence of heat and air - Part 3 RFT Method German version EN 12607-3 2014.pdf

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1、January 2015 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS

2、 75.140; 91.100.50!%?DG“2283336www.din.deDDIN EN 12607-3Bitumen and bituminous binders Determination of the resistance to hardening under influence of heatand air Part 3: RFT Method;English version EN 12607-3:2014,English translation of DIN EN 12607-3:2015-01Bitumen und bitumenhaltige Bindemittel Be

3、stimmung der Bestndigkeit gegen Verhrtung unter Einfluss von Wrme und Luft Teil 3: RFT-Verfahren;Englische Fassung EN 12607-3:2014,Englische bersetzung von DIN EN 12607-3:2015-01Bitumes et liants bitumineux Dtermination de la rsistance au durcissement sous leffet de la chaleur et de lair Partie 3: M

4、thode RFT;Version anglaise EN 12607-3:2014,Traduction anglaise de DIN EN 12607-3:2015-01SupersedesDIN EN 12607-3:2007-06www.beuth.deDocument comprises 13 pagesIn case of doubt, the German-language original shall be considered authoritative.01.15 DIN EN 12607-3:2015-01 2 A comma is used as the decima

5、l marker. National foreword This document (EN 12607-3:2014) has been prepared by Technical Committee CEN/TC 336 “Bituminous binders” (Secretariat: AFNOR, France). The responsible German bodies involved in its preparation were the DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials

6、Testing) and the DIN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Joint Committee NA 062-03-32 GA Bitumen; Prfverfahren und Anforderungen fr die Bindemittel. EN 12607 consists of the following parts under the general title Bitumen and bituminous binders Determin

7、ation of the resistance to hardening under the influence of heat and air: Part 1: RTFOT method Part 2: TFOT method Part 3: RFT method Amendments This standard differs from DIN EN 12607-3:2007-06 as follows: a) the scope has been rendered more precise as regards hardening; b) requirements for the tem

8、perature measuring device have been revised; c) the standard has been editorially revised. Previous editions DIN 1995: 1929, 1934, 1941-11, 1960x-02 DIN 52016: 1980-12, 1988-12 DIN 52017: 1980-12 DIN EN 12607-3: 2000-04, 2007-06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12607-3 November 2

9、014 ICS 75.140; 91.100.50 Supersedes EN 12607-3:2007English Version Bitumen and bituminous binders - Determination of the resistance to hardening under influence of heat and air - Part 3: RFT method Bitumes et liants bitumineux - Dtermination de la rsistance au durcissement sous leffet de la chaleur

10、 et de lair - Partie 3: Mthode RFT Bitumen und bitumenhaltige Bindemittel - Bestimmung der Bestndigkeit gegen Verhrtung unter Einfluss von Wrme und Luft - Teil 3: RFT-Verfahren This European Standard was approved by CEN on 16 August 2014. CEN members are bound to comply with the CEN/CENELEC Internal

11、 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

12、 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 versio

13、ns. 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, Po

14、land, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitatio

15、n in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12607-3:2014 EEN 12607-3:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Principle 4 4 Apparatus .5 5 Sampling .6 6 Procedure .6 7 Calculation 8 8 Expression of results 8 9 Precision .8 1

16、0 Test report 9 Annex A (informative) Characteristics of thermometer 10 Bibliography . 11 DIN EN 12607-3:2015-01 EN 12607-3:2014 (E) 3 Foreword This document (EN 12607-3:2014) has been prepared by Technical Committee CEN/TC 336 “Bituminous binders”, the secretariat of which is held by AFNOR. This Eu

17、ropean 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 2015 and conflicting national standards shall be withdrawn at the latest by May 2015. Attention is drawn to the possibility that some of the elements o

18、f this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12607-3:2007. This document has been prepared under a mandate given to CEN by the European Commission and the European Free

19、 Trade Association. In comparison with EN 12607-3:2007, the following significant changes have been made: changed/added wording of the Warning in the Scope; EN 13302, Bitumen and bituminous binders - Determination of dynamic viscosity of bituminous binder using a rotating spindle apparatus has been

20、added to Clause 2; the reference to mercury thermometer has been deleted (see subclause 4.4) and Annex A is informative; subclause 5.2: reference to RFT instead of RTFOT. EN 12607 consists of the following parts under the general title “Bitumen and bituminous binders Determination of the resistance

21、to hardening under the influence of heat and air”: Part 1: RTFOT method; Part 2: TFOT method; Part 3: RFT method. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgar

22、ia, 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, Turk

23、ey and the United Kingdom. DIN EN 12607-3:2015-01 EN 12607-3:2014 (E) 4 1 Scope This part of EN 12607 specifies a method for measuring the combined effects of heat and air on a thin moving film of bitumen or bituminous binder, simulating the hardening which most bituminous binders undergo during mix

24、ing in an asphalt mixing plant. The method is suitable for other bituminous binders than paving grade bitumen, but the reference temperature might give excessive hardening that does not resemble real conditions during mixing at the plant. The method may not represent the hardening that occurs during

25、 mixing of warm mix binders. The method is referred to as RFT, i.e. Rotating Flask Test. 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 r

26、esponsibility of the user of this European standard to identify the hazards and assess the risks involved in performing this test method and to implement sufficient control measures to protect individual operators (and the environment). This includes appropriate safety and health practices and deter

27、mination of the applicability of regulatory limitations prior to use. If there is a likelihood of volatile components being present in a binder, this procedure should not be used. It should not be used for cut-back bitumen or bituminous emulsions before these products have been stabilized, e.g. in a

28、ccordance with EN 13074-2. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced do

29、cument (including any amendments) applies. EN 58, Bitumen and bituminous binders - Sampling bituminous binders EN 1425, Bitumen and bituminous binders - Characterization of perceptible properties EN 1426, Bitumen and bituminous binders - Determination of needle penetration EN 1427, Bitumen and bitum

30、inous binders - Determination of the softening point - Ring and Ball method EN 12594, Bitumen and bituminous binders - Preparation of test samples EN 12596, Bitumen and bituminous binders - Determination of dynamic viscosity by vacuum capillary EN 13302, Bitumen and bituminous binders - Determinatio

31、n of dynamic viscosity of bituminous binder using a rotating spindle apparatus 3 Principle A moving film of bituminous binder is heated in a rotating flask of a rotary evaporator at a specified temperature for a given period of time. The effect of rotation is that material forming on the surface of

32、the sample in the flask is constantly replaced, preventing the formation of a skin. The effects of heat and air are determined based on the change in mass (expressed as a percentage) or as a change in the bituminous binders characteristics such as penetration according to EN 1426, softening point DI

33、N EN 12607-3:2015-01 EN 12607-3:2014 (E) 5 ring and ball according to EN 1427 or dynamic viscosity according to EN 12596 or EN 13302, before and after hardening. 4 Apparatus Usual laboratory apparatus and glassware, together with the following: 4.1 Rotary evaporator, capable of maintaining a rotatio

34、nal speed of (20 5) r/min, used in conjunction with a 1 000 ml round bottom flask with a 29/32 ground cone socket. NOTE Cooler and receiver are not required. 4.2 Flow control device, capable of maintaining an air flow rate of (500 10) ml/min at ambient temperature. NOTE To eliminate the effects of o

35、xidation reactions, the air can be replaced with inert gases such as nitrogen. 4.3 Flowmeter, capable of measuring the airflow at a rate of 500 ml/min with a maximum indication error of 5 ml/min. 4.4 Temperature measuring device A temperature measuring device (combining sensor and reading unit) shal

36、l: have a range from at least 30 C to 200 C, be readable to 0,1 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 f

37、ormer used reference (see informative Annex A). The temperature measuring device shall be calibrated regularly. A solid stem mercury thermometer (which used to be the former reference thermometer as described in Annex A) is also allowed if national regulations permit its use. When measuring and cont

38、rolling nominally constant temperatures as in this test method, the thermal response time can be rather high (e.g. slow response to a change in temperature). Care shall be taken to consider this aspect since low thermal response times of the sensor can indicate greater cyclic variations than the bit

39、uminous material in practise experiences. 4.5 Glass air inlet pipe, approximately 400 mm long and with an inside diameter of 7 mm, mounted along the axis of rotation of the flask, as illustrated in Figure 1. 4.6 Compressor, or compressed air cylinder, fitted with a reducing valve. 4.7 Thermostatical

40、ly controlled oil bath, regulated to (165 1) C. 4.8 Oven, capable of achieving temperatures up to no less than 120 C. 4.9 Balance, accurate to 10 mg. DIN EN 12607-3:2015-01 EN 12607-3:2014 (E) 6 5 Sampling 5.1 General Ensure that the laboratory sample is homogeneous and is not contaminated (see EN 1

41、425). Take all necessary safety precautions and ensure that the test sample is representative of the laboratory sample from which it is taken (see EN 58). The laboratory sample shall be taken in accordance with EN 58. 5.2 Test sample preparation Prepare the test sample in accordance with EN 12594. R

42、emove a sufficient quantity of the laboratory sample to perform tests to establish the characteristics to be measured on the bituminous binder before and after the RFT hardening test. If necessary, use a warmed knife and transfer it to a suitable container according to EN 12594. The sample shall be

43、free of water. Heat the sample in an oven, in its container with a loosely fitted cover to a fluid condition not exceeding 10 C below the test temperature, for the minimum time necessary to ensure that the sample is completely fluid. Homogenize the sample by stirring. If special bituminous binders,

44、modified binders or bituminous binders with high softening point are tested, it may be necessary to prepare the sample at a higher temperature. In this case, heat the sample as described above and in accordance with EN 12594. For polymer modified bitumen, the temperature may not exceed 200 C, irresp

45、ective of the softening point. 5.3 Measurement The test sample shall weigh (100 1) g. If this quantity of sample is not sufficient for the determination of the properties that are to be subsequently measured (see Table 1), further samples shall be separately subjected to the same test procedure. 5.4

46、 Measurement of initial characteristics Determine the initial characteristics of the bituminous binder, e.g.: P1, penetration at 25 C according to EN 1426; T1, softening point ring and ball according to EN 1427; 1, dynamic viscosity at 60 C according to EN 12596 or EN 13302. 6 Procedure 6.1 Test wit

47、h the determination of change in mass Weigh the clean and dry flask of the rotary evaporator (4.1) to the nearest 5 mg and record the mass m0. This value will be needed to determine the mass of the sample before and after hardening. Weigh (100 1) g of the test sample into the flask of the rotary eva

48、porator (4.1). Allow to cool in a desiccator to a temperature between 18 C and 28 C, and weigh the flask to the nearest 5 mg and determine the mass mEof the sample. Heat the oil bath (4.7) to the test temperature 1 C and mount the flask containing the sample in the bath with the axis of rotation of

49、the flask lying at an angle of 45 to the perpendicular and the spherical body of the flask being completely immersed in the bath liquid (see Figure 1). Insert the air-inlet pipe (4.5) along the axis of rotation of the flask with a clearance of (40 2) mm between the lower end of the pipe and the bottom of DIN EN 12607-3:2015-01 EN 12607-3:2014 (E) 7 the flask. As there is a danger that the flask may detach from the rotary evaporator during the test, ensure that the flask is secured, ei