BS EN 12697-4-2015 Bituminous mixtures Test methods Bitumen recovery Fractionating column《沥青混合料 试验方法 沥青回收 分馏柱》.pdf

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1、BSI Standards PublicationBS EN 12697-4:2015Bituminous mixtures TestmethodsPart 4: Bitumen recovery: FractionatingcolumnBS EN 12697-4:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12697-4:2015.It supersedes BS EN 12697-4:2005 which is withdrawn.The UK part

2、icipation in its preparation was entrusted to TechnicalCommittee B/510/1, Asphalt products.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible fo

3、r its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 87447 5ICS 93.080.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy an

4、d Strategy Committee on 31 July 2015.Amendments issued since publicationDate Text affectedBS EN 12697-4:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12697-4 June 2015 ICS 93.080.20 Supersedes EN 12697-4:2005English Version Bituminous mixtures - Test methods - Part 4: Bitumen recovery: Fr

5、actionating column Mlanges bitumineux - Mthodes dessai - Partie 4 : Rcupration des bitumes la colonne distiller Asphalt - Prfverfahren - Teil 4: Rckgewinnung des Bindemittels: Fraktionierkolonne This European Standard was approved by CEN on 19 March 2015. CEN members are bound to comply with the CEN

6、/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 Cen

7、tre 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 th

8、e 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, Nether

9、lands, Norway, Poland, 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 2015 CEN All righ

10、ts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12697-4:2015 EBS EN 12697-4:2015EN 12697-4:2015 (E) 2 Contents Page Foreword 3 Introduction .7 1 Scope 8 2 Normative references 8 3 Terms and definitions .8 4 Principle 8 5 Apparatus .9 5.1 Appar

11、atus for the extraction of the soluble bitumen .9 5.2 Apparatus for the clarification of the bitumen solution.9 5.3 Distillation apparatus (see Figure 1) . 10 6 Solvent and other materials . 10 7 Procedure 10 7.1 Extraction of the bitumen and removal of insoluble matter . 10 7.2 Assembling and check

12、ing the apparatus for air leaks . 11 7.3 Distillation procedure . 11 8 Preparation of the bitumen for testing . 12 9 Test report . 12 10 Precision 12 Bibliography . 17 BS EN 12697-4:2015EN 12697-4:2015 (E) 3 Foreword This document (EN 12697-4:2015) has been prepared by Technical Committee CEN/TC 227

13、 “Road materials”, the secretariat of which is held by DIN. 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 December 2015 and conflicting national standards shall be withdrawn at the latest by Dec

14、ember 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 identifying any or all such patent rights. This document supersedes EN 12697-4:2005. The following is a list of chang

15、es since the previous edition: the series title no longer makes the method exclusively for hot mix asphalt; definitions for precision have been removed; Formula (1) in 5.2.1 was updated; 5.3.3 has been extended; Figures 2 and 3 have been corrected; the Figure for CO2supply has been added. This Europ

16、ean Standard is one of a series of standards as follows: EN 12697-1, Bituminous mixtures Test methods for hot mix asphalt Part 1: Soluble binder content EN 12697-2, Bituminous mixtures Test method Part 2: Determination of particle size distribution EN 12697-3, Bituminous mixtures Test methods for ho

17、t mix asphalt Part 3: Bitumen recovery: Rotary evaporator EN 12697-4, Bituminous mixtures Test methods Part 4: Bitumen recovery: Fractionating column the present document EN 12697-5, Bituminous mixtures Test methods for hot mix asphalt Part 5: Determination of the maximum density EN 12697-6, Bitumin

18、ous mixtures Test methods for hot mix asphalt Part 6: Determination of bulk density of bituminous specimens EN 12697-7, Bituminous mixtures Test methods for hot mix asphalt Part 7: Determination of bulk density of bituminous specimens by gamma rays EN 12697-8, Bituminous mixtures Test methods for ho

19、t mix asphalt Part 8: Determination of void characteristics of bituminous specimens EN 12697-10, Bituminous mixtures Test methods for hot mix asphalt Part 10: Compactability BS EN 12697-4:2015EN 12697-4:2015 (E) 4 EN 12697-11, Bituminous mixtures Test methods for hot mix asphalt Part 11: Determinati

20、on of the affinity between aggregate and bitumen EN 12697-12, Bituminous mixtures Test methods for hot mix asphalt Part 12: Determination of the water sensitivity of bituminous specimens EN 12697-13, Bituminous mixtures Test methods for hot mix asphalt Part 13: Temperature measurement EN 12697-14, B

21、ituminous mixtures Test methods for hot mix asphalt Part 14: Water content EN 12697-15, Bituminous mixtures Test methods for hot mix asphalt Part 15: Determination of the segregation sensitivity EN 12697-16, Bituminous mixtures Test methods for hot mix asphalt Part 16: Abrasion by studded tyres EN 1

22、2697-17, Bituminous mixtures Test methods for hot mix asphalt Part 17: Particle loss of porous asphalt specimen EN 12697-18, Bituminous mixtures Test methods for hot mix asphalt Part 18: Binder drainage EN 12697-19, Bituminous mixtures Test methods for hot mix asphalt Part 19: Permeability of specim

23、en EN 12697-20, Bituminous mixtures Test methods for hot mix asphalt Part 20: Indentation using cube or cylindrical specimens (CY) EN 12697-21, Bituminous mixtures Test methods for hot mix asphalt Part 21: Indentation using plate specimens EN 12697-22, Bituminous mixtures Test methods for hot mix as

24、phalt Part 22: Wheel tracking EN 12697-23, Bituminous mixtures Test methods for hot mix asphalt Part 23: Determination of the indirect tensile strength of bituminous specimens EN 12697-24, Bituminous mixtures Test methods for hot mix asphalt Part 24: Resistance to fatigue EN 12697-25, Bituminous mix

25、tures Test methods for hot mix asphalt Part 25: Cyclic compression test EN 12697-26, Bituminous mixtures Test methods for hot mix asphalt Part 26: Stiffness EN 12697-27, Bituminous mixtures Test methods for hot mix asphalt Part 27: Sampling EN 12697-28, Bituminous mixtures Test methods for hot mix a

26、sphalt Part 28: Preparation of samples for determining binder content, water content and grading EN 12697-29, Bituminous mixtures Test method for hot mix asphalt Part 29: Determination of the dimensions of a bituminous specimen EN 12697-30, Bituminous mixtures Test methods for hot mix asphalt Part 3

27、0: Specimen preparation by impact compactor EN 12697-31, Bituminous mixtures Test methods for hot mix asphalt Part 31: Specimen preparation by gyratory compactor BS EN 12697-4:2015EN 12697-4:2015 (E) 5 EN 12697-32, Bituminous mixtures Test methods for hot mix asphalt Part 32: Laboratory compaction o

28、f bituminous mixtures by vibratory compactor EN 12697-33, Bituminous mixtures Test methods for hot mix asphalt Part 33: Specimen prepared by roller compactor EN 12697-34, Bituminous mixtures Test methods for hot mix asphalt Part 34: Marshall test EN 12697-35, Bituminous mixtures Test methods for hot

29、 mix asphalt Part 35: Laboratory mixing EN 12697-36, Bituminous mixtures Test methods for hot mix asphalt Part 36: Determination of the thickness of a bituminous pavement EN 12697-37, Bituminous mixtures Test methods for hot mix asphalt Part 37: Hot sand test for the adhesivity of binder on precoate

30、d chippings for HRA EN 12697-38, Bituminous mixtures Test methods for hot mix asphalt Part 38: Common equipment and calibration EN 12697-39, Bituminous mixtures Test methods for hot mix asphalt Part 39: Binder content by ignition EN 12697-40, Bituminous mixtures Test methods for hot mix asphalt Part

31、 40: In situ drainability EN 12697-41, Bituminous mixtures Test methods for hot mix asphalt Part 41: Resistance to de-icing fluids EN 12697-42, Bituminous mixtures Test methods for hot mix asphalt Part 42: Amount of foreign matter in reclaimed asphalt EN 12697-43, Bituminous mixtures Test methods fo

32、r hot mix asphalt Part 43: Resistance to fuel EN 12697-44, Bituminous mixtures Test methods for hot mix asphalt Part 44: Crack propagation by semi-circular bending test EN 12697-45, Bituminous mixtures Test methods for hot mix asphalt Part 45: Saturation Ageing Tensile Stiffness (SATS) conditioning

33、test EN 12697-46, Bituminous mixtures Test methods for hot mix asphalt Part 46: Low temperature cracking and properties by uniaxial tension tests EN 12697-47, Bituminous mixtures Test methods for hot mix asphalt Part 47: Determination of the ash content of natural asphalts prEN 12697-48, Bituminous

34、mixtures Test methods for hot mix asphalt Part 48: Interlayer Bonding1) EN 12697-49, Bituminous mixtures Test methods for hot mix asphalt Part 49: Determination of friction after polishing prCEN/TS 12697-50, Bituminous mixtures Test methods Part 50: Resistance to Scuffing1) FprCEN/TS 12697-51, Bitum

35、inous mixtures Test methods Part 51: Surface shear strength test 1) Currently at Enquiry stage. BS EN 12697-4:2015EN 12697-4:2015 (E) 6 prEN 12697-52, Bituminous mixtures Test methods Part 52: Conditioning to address oxidative ageing2) prEN 12697-53, Bituminous mixtures Test methods Part 53: Cohesio

36、n increase by spreadability-meter method 3)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, Denmark, Estonia, Finland, Former

37、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. 2) In preparation. 3) Currently at drafting

38、stage. BS EN 12697-4:2015EN 12697-4:2015 (E) 7 Introduction WARNING The method described in this European Standard may require the use of dichloromethane (methylene chloride), 1.1.1 trichlorethane, benzene, trichlorethylene, xylene, toluene or other solvent capable of dissolving bitumen. These solve

39、nts are hazardous to health and are subject to occupational exposure limits as detailed in relevant legislation and regulations. Exposure levels are related to both handling procedures and ventilation provision and it is emphasized that adequate training should be given to staff employed in the usag

40、e of these substances. BS EN 12697-4:2015EN 12697-4:2015 (E) 8 1 Scope This European Standard specifies a test method for the recovery of soluble bitumen from bituminous mixtures from pavements in a form suitable for further testing. The procedure is suitable for the recovery of paving grade bitumen

41、 and is also suitable for mixtures containing volatile matter such as cut-back bitumen but the results may be less precise. This European Standard is the reference method for mixtures containing volatile matter, but the rotary evaporator procedure (see EN 12697-3) for mixtures with paving grade bitu

42、men. NOTE There is limited experience of recovery when polymer-modified bitumen is used. 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. F

43、or undated references, the latest edition of the referenced document (including any amendments) applies. EN 12594, Bitumen and bituminous binders Preparation of test samples EN 12697-1:2012, Bituminous mixtures Test methods for hot mix asphalt Part 1: Soluble binder content EN 12697-3, Bituminous mi

44、xtures Test methods for hot mix asphalt Part 3: Bitumen recovery: Rotary evaporator EN 12697-38, Bituminous mixtures Test methods for hot mix asphalt Part 38: Common equipment and calibration 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 so

45、luble binder content percentage by mass of extractable binder in an anhydrous sample determined by extracting the binder from the sample Note 1 to entry: Extraction may be followed by binder recovery. 3.2 insoluble binder content percentage by mass of binder that adheres to the aggregate after extra

46、ction 4 Principle The bitumen is separated from the sample by dissolving in dichloromethane (or other suitable solvent). After removal of undissolved solids, the bitumen solution is concentrated by atmospheric distillation in a fractionating column. The last traces of solvent are removed from the co

47、ncentrate by distillation at a temperature of 100 C above the expected softening point or 175 C, whichever is the higher, with the pressure reduced from atmospheric pressure 100 kPa to 20 kPa and with the aid of a stream of carbon dioxide gas. When cutback bitumens containing very volatile fluxes, e

48、.g. white spirit, are being recovered the carbon dioxide gas is omitted. BS EN 12697-4:2015EN 12697-4:2015 (E) 9 5 Apparatus 5.1 Apparatus for the extraction of the soluble bitumen Suitable container with stopper, in which the sample and solvent can be agitated together, or other apparatus for the extraction of soluble bitumen defined in EN 12697-1. NOTE The use of the hot extraction methods in EN 126971 may harden the binder and hence affect the results from subsequent tests. However, this hardening is usually regarded as approxi