Bituminous mixtures - Test methods for hot mix asphalt - Part 3: Bitumen recovery: Rotary evaporator

This document describes a test method for the recovery of soluble bitumen from bituminous mixtures used in road, airfield or similar pavements in a form suitable for further testing. The test can be undertaken on either loose or compacted asphalt materials. The procedure is suitable for the recovery of paving grade bitumens, for which materials this European Standard is the reference method. The fractionating column procedure (see EN 12697-4) is the reference method for mixtures containing volatile matter such as cut-back bitumen.
For recovery of polymer modified bitumens, the rotary evaporator procedure is recommended.

Asphalt - Prüfverfahren für Heißasphalt - Teil 3: Rückgewinnung des Bindemittels: Rotationsverdampfer

Dieses Dokument beschreibt ein Prüfverfahren, mit dem aus Asphalt, der zum Bau von Straßen, Flugplätzen und ähnlichen Verkehrsflächen ver¬wendet wurde, lösliches Bindemittel in einer Form zurückgewonnen wird, die für weitere Prüfungen geeignet ist. Die Prüfung kann entweder an losem oder an verdichtetem Asphalt durchgeführt werden. Dieses Verfahren eignet sich nur zur Rückgewinnung von Straßenbaubitumen, für die das in dieser Europäischen Norm angegebene Verfahren das Referenzverfahren ist. Das Verfahren mit der Fraktionierkolonne (siehe EN 12697 4) ist das Referenzverfahren für Mischgüter, die flüchtige Bestandteile enthalten, wie z. B. verschnittenes Bitumen.
ANMERKUNG   Für die Rückgewinnung polymermodifizierten Bitumens wird der Rotationsverdampfer empfohlen.

Mélanges Bitumineux - Méthodes d'essai pour enrobés à chaud - Partie 3: Extraction des bitumes à l'évaporateur rotatif

Le présent document décrit une méthode d'essai permettant de récupérer du bitume soluble de mélanges bitumineux utilisés sur les routes, les terrains d'aviation ou chaussées similaires sous une forme se prêtant à des essais complémentaires. L'essai peut être réalisé sur des matériaux enrobés foisonnés ou compactés. La procédure convient uniquement à la récupération de bitumes routiers de grades usuels, pour lesquels cette Norme européenne est une méthode de référence. La méthode à la colonne à distiller (voir EN 12697-4) est la méthode de référence pour les mélanges qui contiennent des produits volatils tels que des fluxants.
Pour la récupération des bitumes modifiés par des polymères, la méthode à l’évaporateur rotatif est recommandée.

Bitumenske zmesi - Preskusne metode za vroče asfaltne zmesi - 3. del: Ugotavljanje deleža veziva: rotacijski uparjalnik

Ta dokument opisuje preskusno metodo za ugotavljanje deleža topnega bitumena v bitumenskih zmeseh za ceste, vozišča letališč ali podobna vozišča v obliki, ki je primerna za nadaljnje preskušanje. Preskus se lahko opravi na razrahljanih ali zgoščenih asfaltnih materialih. Postopek je primeren za ugotavljanje deleža cestnogradbenih bitumnov, pri čemer je ta evropski standard referenčna metoda za njihov material. Kolonska frakcionirana destilacija (glej EN 12697-4) je referenčna metoda za zmesi, ki vsebujejo hlapne snovi, kot je rezani bitumen. Za ugotavljanje deleža bitumnov, modificiranih s polimeri, se priporoča postopek z rotacijskim uparjalnikom.

General Information

Status
Withdrawn
Publication Date
21-May-2013
Withdrawal Date
18-Dec-2018
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
19-Dec-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.GHOAsphalt - Prüfverfahren für Heißasphalt - Teil 3: Rückgewinnung des Bindemittels: RotationsverdampferMélanges Bitumineux - Méthodes d'ssai pour enrobés à chaud - Partie 3: Extraction des bitumes à l'évaporateur rotatifBituminous mixtures - Test methods for hot mix asphalt - Part 3: Bitumen recovery: Rotary evaporator93.080.20Materiali za gradnjo cestRoad construction materialsICS:Ta slovenski standard je istoveten z:EN 12697-3:2013SIST EN 12697-3:2013en,fr,de01-julij-2013SIST EN 12697-3:2013SLOVENSKI

STANDARDSIST EN 12697-3:20051DGRPHãþD
SIST EN 12697-3:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12697-3
May 2013 ICS 93.080.20 Supersedes EN 12697-3:2005English Version

Bituminous mixtures - Test methods for hot mix asphalt - Part 3: Bitumen recovery: Rotary evaporator

Mélanges Bitumineux - Méthodes d'essai pour enrobés à chaud - Partie 3: Extraction des bitumes à l'évaporateur rotatif

Asphalt - Prüfverfahren für Heißasphalt - Teil 3: Rückgewinnung des Bindemittels: Rotationsverdampfer This European Standard was approved by CEN on 28 March 2013.

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.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12697-3:2013: ESIST EN 12697-3:2013

EN 12697-3:2013 (E) 2 Contents

Page Foreword ..............................................................................................................................................................3 1 Scope ......................................................................................................................................................7 2 Normative references ............................................................................................................................7 3 Terms and definitions ...........................................................................................................................7 4 Principle ..................................................................................................................................................7 5 Apparatus ...............................................................................................................................................7 5.1 Apparatus for the extraction of the soluble bitumen .........................................................................7 5.2 Apparatus for the clarification of the bitumen solution.....................................................................8 5.3 Distillation apparatus ............................................................................................................................8 6 Solvent and other materials ..................................................................................................................9 7 Procedure ...............................................................................................................................................9 7.1 Extraction of the bitumen and removal of insoluble matter ..............................................................9 7.2 Assembling the apparatus ................................................................................................................. 10 7.3 Distillation procedure ......................................................................................................................... 10 8 Preparation of the bitumen for testing ............................................................................................. 12 9 Test report ........................................................................................................................................... 12 10 Precision .............................................................................................................................................. 13 Bibliography ..................................................................................................................................................... 15

SIST EN 12697-3:2013

EN 12697-3:2013 (E) 3 Foreword This document (EN 12697-3:2013) has been prepared by Technical Committee CEN/TC 227 “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 November 2013, and conflicting national standards shall be withdrawn at the latest by November 2013. 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 12697-3:2005. The significant changes from that document include:

 The Scope is clarified.  The definitions for precision and associated terms have been removed.  Remaining solvent is redefined as solvent residue.  The minimum evaporation capacity of solvent has been reduced from 1,0 l/h to 0,85 l/h.  The container no longer has to be made of glass.  The warning note about solvent is clarified.  Silicon grease is permitted as a seal.  Silica gel has been corrected.  Pouring of bitumen solution has been edited.  Ash content reference to EN 12697-1 has been corrected.  Maximum time for bitumen recovery distillation is reduced.  Check for air leaks has been removed.  First phase temperature and second phase pressure with dichloromethane has been changed.  The minimum final pressure has been made relevant to first phase pressure instead of fixed value for all solvents.  The use of nitrogen to prevent the bitumen from ageing has been added.  The note on expected time for distillation has been removed. This part of EN 12697, Bituminous mixtures — Test methods for hot mix asphalt, is one of a series of standards as listed below:  Part 1: Soluble binder content SIST EN 12697-3:2013

EN 12697-3:2013 (E) 4  Part 2: Determination of particle size distribution  Part 3: Bitumen recovery: Rotary evaporator  Part 4: Bitumen recovery: Fractionating column  Part 5: Determination of the maximum density  Part 6: Determination of bulk density of bituminous specimens  Part 7: Determination of bulk density of bituminous specimens by gamma rays  Part 8: Determination of void characteristics of bituminous specimens  Part 9: Determination of the reference density  Part 10: Compactibility  Part 11: Determination of the affinity between aggregate and bitumen  Part 12: Determination of the water sensitivity of bituminous specimens  Part 13: Temperature measurement  Part 14: Water content  Part 15: Determination of the segregation sensitivity  Part 16: Abrasion by studded tyres  Part 17: Particle loss of porous asphalt specimen  Part 18: Binder drainage  Part 19: Permeability of specimen  Part 20: Indentation using cube or cylindrical specimens (CY)  Part 21: Indentation using plate specimens  Part 22: Wheel tracking  Part 23: Determination of the indirect tensile strength of bituminous specimens  Part 24: Resistance to fatigue  Part 25: Cyclic compression test  Part 26: Stiffness  Part 27: Sampling  Part 28: Preparation of samples for determining binder content, water content and grading  Part 29: Determination of the dimensions of a bituminous specimen SIST EN 12697-3:2013

EN 12697-3:2013 (E) 5  Part 30: Specimen preparation by impact compactor  Part 31: Specimen preparation by gyratory compactor  Part 32: Laboratory compaction of bituminous mixtures by vibratory compactor  Part 33: Specimen prepared by roller compactor  Part 34: Marshall test  Part 35: Laboratory mixing  Part 36: Determination of the thickness of a bituminous pavement  Part 37: Hot sand test for the adhesivity of binder on precoated chippings for HRA  Part 38: Common equipment and calibration  Part 39: Binder content by ignition  Part 40: In situ drainability  Part 41: Resistance to de-icing fluids  Part 42: Amount of foreign matter in reclaimed asphalt  Part 43: Resistance to fuel  Part 44: Crack propagation by semi-circular bending test  Part 45: Saturation Ageing Tensile Stiffness (SATS) conditioning test  Part 46: Low temperature cracking and properties by uniaxial tension tests  Part 47: Determination of the ash content of natural asphalts  Part 48:Interlayer bonding (Torque bond test – TBT, Shear bond test – SBT, Tensile Adhesion Test - TAT)1)  Part 49: Determination of friction after polishing1)  Part 50: Resistance to scuffing1) WARNING — The method described in this European Standard may require the use of dichloromethane (methylene chloride), 1.1.1-trichlorethane, benzene, trichlorethylene, xylene, toluene, tetrachloroethylene or other solvent capable of dissolving bitumen. These solvents 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 important that adequate training be given to staff employed in the usage of these substances. 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

1) In preparation. SIST EN 12697-3:2013

EN 12697-3:2013 (E) 6 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 12697-3:2013

EN 12697-3:2013 (E) 7 1 Scope This document describes a test method for the recovery of soluble bitumen from bituminous mixtures used in road, airfield or similar pavements in a form suitable for further testing. The test can be undertaken on either loose or compacted asphalt materials. The procedure is suitable for the recovery of paving grade bitumens, for which materials this European Standard is the reference method. The fractionating column procedure (see EN 12697-4) is the reference method for mixtures containing volatile matter such as cut-back bitumen. For recovery of polymer modified bitumens, the rotary evaporator procedure is recommended. 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 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 12697-38, 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 terms and definitions given in EN 12697-1:2012 and the following apply. 3.1 soluble binder content proportion of extractable binder in an anhydrous sample determined by extracting the binder from the sample Note 1 to entry: Extraction can be followed by binder recovery. Note 2 to entry: The soluble binder content is expressed in percent by mass. 3.2 insoluble binder content proportion of binder that adheres to the aggregate after extraction Note 1 to entry: The insoluble binder content is expressed in percent by mass. 4 Principle The bitumen is separated from the sample by dissolving in dichloromethane (or other suitable solvent). After removal of undissolved solids from the bitumen solution, the bitumen is recovered from it by vacuum distillation using a rotary evaporator. The bitumen is in solution for less than 24 h. 5 Apparatus 5.1 Apparatus for the extraction of the soluble bitumen A suitable container with stopper in which the sample and solvent can be agitated together, an asphalt analyser or other apparatus for the extraction of soluble bitumen defined in EN 12697-1. SIST EN 12697-3:2013

EN 12697-3:2013 (E) 8 NOTE The use of the hot extraction methods in EN 12697-1 may harden the binder and hence affect the results from subsequent tests. However, this hardening is usually approximately equivalent to the softening resulting from any solvent residue. 5.2 Apparatus for the clarification of the bitumen solution For clarification of the bitumen solution, a sample-tube centrifuge, a continuous centrifuge or a filtration system may be used. Centrifuges are suitable for separation of solids from any bitumen solutions and are the recommended apparatus for use with this method. The filtration apparatus may not be suitable for the separation of solids from all types of bituminous solutions but it has been included in this method because of the general availability of this equipment in asphalt testing laboratories. If difficulties are experienced using a pressure filter the centrifuge technique should be used. NOTE If an asphalt analyser is used for the extraction of soluble bitumen, the use of a centrifuge is not required. 5.2.1 Sample tube centrifuge, capable of developing an acceleration of at least 15 000 m/s2 in accordance with the formula: a = 1,097 × n2 × r × 10−5 (1) where a is the acceleration, expressed in metres per second squared (m/s2); n is the number of revolutions, expressed as revolution per minute (r/min); r is the radius to the bottom of the tubes (internal) wh

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