DIN EN 12607-1-2015 Bitumen and bituminous binders - Determination of the resistance to hardening under influence of heat and air - Part 1 RTFOT method German version EN 12607-1 20.pdf

1、January 2015 Translation by DIN-Sprachendienst.English price group 11No 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).IC

2、S 75.140; 91.100.50!%?DJ“2283339www.din.deDDIN EN 12607-1Bitumen and bituminous binders Determination of the resistance to hardening under influence of heatand air Part 1: RTFOT method;English version EN 12607-1:2014,English translation of DIN EN 12607-1:2015-01Bitumen und bitumenhaltige Bindemittel

3、 Bestimmung der Bestndigkeit gegen Verhrtung unter Einfluss von Wrme und Luft Teil 1: RTFOT-Verfahren;Englische Fassung EN 12607-1:2014,Englische bersetzung von DIN EN 12607-1:2015-01Bitumes et liants bitumineux Dtermination de la rsistance au durcissement sous leffet de la chaleur et de lair Partie

4、 1: Mthode RTFOT;Version anglaise EN 12607-1:2014,Traduction anglaise de DIN EN 12607-1:2015-01SupersedesDIN EN 12607-1:2007-06www.beuth.deDocument comprises 17 pagesIn case of doubt, the German-language original shall be considered authoritative.01.15 DIN EN 12607-1:2015-01 2 A comma is used as the

5、 decimal marker. National foreword This document (EN 12607-1:2014) 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 Mat

6、erials 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 D

7、etermination 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 12607-1:2007-06 as follows: a) the scope has been rendered more precise as regards hardening; b) a reference tempe

8、rature has been included in Clause 3 “Principle”; c) requirements for the temperature measuring device have been revised; d) information about the use of residue in case of additional test runs has been included; e) it has been specified that under certain conditions, the time limit of 72 h can be p

9、assed; f) the standard has been editorially revised. Previous editions DIN EN 12607-1: 2000-04, 2007-06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12607-1 November 2014 ICS 75.140; 91.100.50 Supersedes EN 12607-1:2007English Version Bitumen and bituminous binders - Determination of the res

10、istance to hardening under influence of heat and air - Part 1: RTFOT method Bitumes et liants bitumineux - Dtermination de la rsistance au durcissement sous leffet de la chaleur et de lair - Partie 1 : Mthode RTFOT Bitumen und bitumenhaltige Bindemittel - Bestimmung der Bestndigkeit gegen Verhrtung

11、unter Einfluss von Wrme und Luft - Teil 1: RTFOT-Verfahren This European Standard was approved by CEN on 16 August 2014. 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 withou

12、t 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 la

13、nguage 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, Denm

14、ark, 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. EUROPEAN COMMITTEE

15、 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 exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12607-1:2014 EEN 12607-1:2014

16、(E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Principle 5 4 Apparatus .5 5 Sampling 10 6 Procedure 10 7 Calculation . 11 8 Expression of results . 12 9 Precision 12 10 Test report . 13 Annex A (informative) Characteristics of thermometer 14 Bibliography . 15 DIN EN 12607-1:2015

17、-01EN 12607-1:2014 (E) 3 Foreword This document (EN 12607-1:2014) 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 o

18、r 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 of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for iden

19、tifying any or all such patent rights. This document supersedes EN 12607-1:2007. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. In comparison with EN 12607-1:2007, the following significant changes have been made: chan

20、ged/added wording of the Warning in the Scope; the reference to mercury thermometer has been deleted (see subclause 4.3) and Annex A is informative; the second note in subclause 6.2 has been added to clarify the duration of the conditioning; the second to last paragraph in subclause 6.2 highlights t

21、hat it is allowed for polymer modified bitumen to raise the temperature shortly to 180 C to pour the sample out of the containers. EN 12607 consists of the following parts under the general title “Bitumen and bituminous binders Determination of the resistance to hardening under the influence of heat

22、 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, Bulgaria, Croatia, Cyprus, Czech Republic, Den

23、mark, 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. DIN EN 12607-

24、1:2015-01EN 12607-1:2014 (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 mixing in an asphalt mixing plant. The method

25、 described is not applicable to some modified binders or to those where the viscosity is too high to provide a moving film. In some cases the sample may creep out of the glass container and flow on the heating elements of the oven during testing. The method is suitable for other bituminous binders t

26、han paving grade bitumen, but the reference temperature might give excessive hardening that do not resemble real conditions during mixing at the plant. The method may not represent the hardening that occurs during mixing of warm mix binders. The method is referred to as RTFOT, i.e. Rolling Thin Film

27、 Oven 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 responsibility of the user of this European Standard to identify the hazards a

28、nd 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 determination of the applicability of regulatory limitations prior to use. If ther

29、e is a likelihood of volatile components being present in a binder, this procedure should not be used. It should not be used for cutback bitumen or bituminous emulsions before these products have been stabilized, e.g. in accordance with EN 13074-2. 2 Normative references The following documents, in

30、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 document (including any amendments) applies. EN 58, Bitumen and bituminous binde

31、rs Sampling bituminous bind ers EN 1425, Bitumen and bituminous binders Characterization of perceptible properties EN 1426, Bitumen and bituminous binders Determination of needle penetration EN 1427, Bitumen and bituminous binders Determination of the softening point Ring and Ball method EN 12594, B

32、itumen and bituminous binders Preparation of test samples EN 12596, Bitumen and bituminous binders Determination of dynamic viscosity by vacuum capillary EN 12735-1, Copper and copper alloys Seamless, round copper tubes for ai r conditioning and refrigeration Part 1: Tubes for piping systems EN 1330

33、2, Bitumen and bituminous binders Determination of dynamic viscosity of bituminous binder using a rotating spindle apparatus DIN EN 12607-1:2015-01EN 12607-1:2014 (E) 5 3 Principle A moving film of bituminous binder is heated in an oven to a specified temperature for a given period of time with a co

34、nstant supply of air. The effects of heat and air are determined based on the change in mass (expressed as a percentage) or on the change in the bituminous binders characteristics such as penetration according to EN 1426, softening point according to EN 1427 or dynamic viscosity according to EN 1259

35、6 or EN 13302, before and after the period in the oven. The reference temperature of this conditioning is 163 C. 4 Apparatus Usual laboratory apparatus and glassware, together with the following: 4.1 Oven, rectangular, double-walled and electrically heated. The inside dimensions excluding the air pl

36、enum shall be as follows: height: (340 15) mm; width: (405 15) mm; depth: (445 15) mm. The front door shall contain a symmetrically located window of the following dimensions: width: (320 15) mm; height: (215 15) mm. This window shall contain two sheets of heat resistant glass separated by an air sp

37、ace. The window shall permit an unobstructed view of the interior of the oven. The top of the upper heating element shall be (25 9) mm below the oven floor. The oven shall be ventilated by convection currents of air; the oven shall have air inlets and outlets for the evacuation of hot gases. The air

38、 inlets toward the bottom of the oven shall be located so that the air is able to flow around the heating elements and their total open area shall be (1 500 100) mm2. The outlets for the hot gases evacuation shall be located in the upper part of the oven and their total open area shall be (1 000 100

39、) mm2. The oven shall incorporate an air flow around the side walls and ceiling. The air plenum (between the wall and the sheaths) shall be of uniform thickness (38 3) mm (Figure 1 a). The inside of the oven shall be equipped with a vertical circular aluminium carriage with a diameter of (300 10) mm

40、 (Figure 2 a). The horizontal axis of the circular carriage is located (160 10) mm from the upper inside wall of the oven, excluding the air plenum. The carriage shall be provided with suitable openings and spring clips for firmly holding eight glass containers in a horizontal position (Figure 2 b).

41、 The carriage shall be mechanically driven by a 20 mm diameter shaft and shall make 15 turns within (60 1) s The front surface of the carriage shall be (110 5) mm from the rear inside wall of the oven. On the upper surface and at the midpoint of the width of the oven and (150 5) mm from the front fa

42、ce of the carriage, a squirrel cage-type fan shall be mounted with an outside diameter of (135 5) mm and a thickness of (75 5) mm and turned at (1 725 100) r/min by an externally mounted motor. DIN EN 12607-1:2015-01EN 12607-1:2014 (E) 6 The fan shall be set so that it turns in an opposite direction

43、 to its vanes. The air flow characteristics shall be suction from the floor of the oven then flow along the walls in the sheaths fitted for this purpose and exhaust at the upper surface through the fan (Figure 1 a) and Figure 1 b). The oven shall be equipped with a thermostat capable of maintaining

44、a constant temperature to 0,5 C. The corresponding regulation probe shall be situated on the right side of the oven as described in Figure 1 or symmetrically on the left side. The temperature shall be recorded inside the oven with the reading point (25 5) mm below a horizontal line through the axle

45、of the carriage, (50 5) mm from the inside wall and (115 5) mm from the front face of the carriage. The heating capacity shall be sufficient to bring the oven back to the test temperature within a 10 min period after insertion of the containers. The oven shall be equipped with an air jet positioned

46、to blow heated air into each container at its lowest point of travel. The air jet shall have an outlet orifice with a diameter of (1,0 0,1) mm connected to a copper tubing (see EN 12735-1) with an external diameter of (8,0 0,1) mm and a length of (7,60 0,05) m. This tube shall be coiled to lie flat

47、on the bottom of the oven and lead to a source of oil-free, dried and dust-free air. The orifice of the tubing shall be between 5 mm and 10 mm from the opening in the glass container. The air jet shall blow along the main axis of the glass container. NOTE Activated silica gel treated with an indicat

48、or is a satisfactory desiccant for the air. The performance of the equipment (particularly the motor rotation speed and the fan rotation speed) should be verified and action should be taken if it does not comply with the requirements stated in this method. 4.2 Flow meter, capable of measuring the ai

49、rflow at a rate of (4,0 0,2) l/min at ambient temperature and pressure. 4.3 Temperature measuring device A temperature measuring device (combining sensor and reading unit) shall have a range from at least 150 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 th