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    DIN EN 12697-42-2013 Bituminous mixtures - Test methods for hot mix asphalt - Part 42 Amount of foreign matter in reclaimed asphalt German version EN 12697-42 2012《沥青混合料 热混沥青的试验方法 .pdf

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    DIN EN 12697-42-2013 Bituminous mixtures - Test methods for hot mix asphalt - Part 42 Amount of foreign matter in reclaimed asphalt German version EN 12697-42 2012《沥青混合料 热混沥青的试验方法 .pdf

    1、March 2013 Translation by DIN-Sprachendienst.English price group 8No 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 9

    2、3.080.20!$ss“1968080www.din.deDDIN EN 12697-42Bituminous mixtures Test methods for hot mix asphalt Part 42: Amount of foreign matter in reclaimed asphalt;English version EN 12697-42:2012,English translation of DIN EN 12697-42:2013-03Asphalt Prfverfahren fr Heiasphalt Teil 42: Fremdstoffgehalt in Aus

    3、bauasphalt;Englische Fassung EN 12697-42:2012,Englische bersetzung von DIN EN 12697-42:2013-03Mlanges bitumineux Mthodes dessai pour mlange hydrocarbon chaud Partie 42: Quantit de matriaux trangers prsents dans les agrgats denrobs;Version anglaise EN 12697-42:2012,Traduction anglaise de DIN EN 12697

    4、-42:2013-03SupersedesDIN EN 12697-42:2006-02www.beuth.deDocument comprises 13 pagesIn case of doubt, the German-language original shall be considered authoritative.02.13 DIN EN 12697-42:2013-03 2 A comma is used as the decimal marker. National foreword This document (EN 12697-42:2012) has been prepa

    5、red by Technical Committee CEN/TC 227 “Road materials” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Working Committee NA 005-10-10 AA Asphalt. Amendments This standard diffe

    6、rs from DIN EN 12697-42:2006-02 as follows: a) the definition of coarse foreign matter now includes 8 mm minimum size; b) the solvent for hydrocarbons is no longer specified; c) the classification of materials has been adapted to EN 13108-8; d) the information about the source of reclaimed asphalt h

    7、as been rendered more precise; e) an annex has been added for the analysis of finer material. Previous editions DIN EN 12697-42: 2006-02 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12697-42 November 2012 ICS 93.080.20 Supersedes EN 12697-42:2005English Version Bituminous mixtures - Test met

    8、hods for hot mix asphalt - Part42: Amount of foreign matter in reclaimed asphalt Mlanges bitumineux - Mthodes dessai pour mlange hydrocarbon chaud - Partie 42: Quantit de matriaux trangers prsents dans les agrgats denrobs Asphalt - Prfverfahren fr Heiasphalt - Teil 42: Fremdstoffgehalt in Ausbauasph

    9、alt This European Standard was approved by CEN on 13 October 2012. 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

    10、 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

    11、 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 Mac

    12、edonia, 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 COMIT EUROPEN DE NORMALISATION EU

    13、ROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12697-42:2012: EEN 12697-42:2012 (E) 2 Content Page Foreword 31 Scope 62 Normative references 63

    14、 Terms and definitions .64 Principle 75 Apparatus .76 Preparation of the sample .77 Procedure .78 Expression of results 89 Test report 810 Precision data 9Annex A (informative) Amount of foreign matter in finer fractions 10A.1 General . 10A.2 Additional definitions . 10A.3 Apparatus 10A.4 Preparatio

    15、n of the sample 10A.5 Procedure 11A.6 Expression of results . 11A.7 Test report . 11DIN EN 12697-42:2013-03 EN 12697-42:2012 (E) 3 Foreword This document (EN 12697-42:2012) has been prepared by Technical Committee CEN/TC 227 “Road materials”, the secretariat of which is held by DIN. This European St

    16、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2013, and conflicting national standards shall be withdrawn at the latest by May 2013. Attention is drawn to the possibility that some of the elements of this d

    17、ocument 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 12697-42:2005. Compared with EN 12697-42:2005, the following significant changes have been made: definition of coarse foreign matte

    18、r includes 8 mm minimum size; solvent for hydrocarbons made less specific; classifications for material brought directly into line with those in EN 13108-8; source of reclaimed asphalt to be reported clarified; annex for analysis of finer material added. WARNING The methods described in this Europea

    19、n Standard require the use of solvents that are hazardous to health and are subject to occupational exposure limits as described in relevant legislation and regulations. Exposure levels are related to both handling procedures and ventilation provision and it is emphasised that adequate training shou

    20、ld be given to staff employed in the usage of these substances. EN 12697, Bituminous mixtures Test methods for hot mix asphalt contains the following parts: Part 1: Soluble binder content Part 2: Determination of particle size distribution Part 3: Bitumen recovery: Rotary evaporator Part 4: Bitumen

    21、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: Determin

    22、ation of the reference density Part 10: Compactability DIN EN 12697-42:2013-03 EN 12697-42:2012 (E) 4 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 P

    23、art 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 specimen

    24、s 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 Par

    25、t 29: Determination of the dimensions of a bituminous specimen Part 30: Specimen preparation by impact compactor Part 31: Specimen preparation by gyratory compactor Part 32: Laboratory compaction of bituminous mixtures by a vibratory compactor Part 33: Specimen prepared by roller compactor Part 34:

    26、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 DIN EN 12697-42:2013-03 EN 12697-42:2012 (E) 5 Part 39: Binder conten

    27、t by ignition Part 40: In situ drainability Part 41: Resistance to de-icing fluids Part 42: Amount of coarse foreign matter in reclaimed asphalt (the present document) Part 43: Resistance to fuel. Part 44: Crack propagation by semi-circular bending test Part 45: Saturation ageing tensile stiffness (

    28、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

    29、 after polishing1) Part 50: Resistance to scuffing 1)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, Finlan

    30、d, 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. 1) In preparation. DIN EN 12697-42

    31、:2013-03 EN 12697-42:2012 (E) 6 1 Scope This European Standard specifies a visual method of determining the amount and components of coarse foreign matter in reclaimed asphalt. A method for determining the amount and components of finer foreign matter in reclaimed asphalt is given in Annex A. This m

    32、ethod does not completely categorise the foreign matter that can occur in asphalt. NOTE 1 For the use of reclaimed asphalt in asphalt mixtures, it is important to know the components in the reclaimed asphalt and to what extent coarse foreign matter is present that can influence the properties of the

    33、 asphalt mix. NOTE 2 The method is not intended to categorise all foreign materials but rather to ensure that the amount of coarse foreign materials are minimised. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable f

    34、or 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 932-1:1996, Test for general properties of aggregates Part 1: Methods for sampling EN 933-2, Test for geometrical pro

    35、perties of aggregates Part 2: Determination of particle size distribution Test sieves, nominal size of apertures EN 12697-27, Bituminous mixtures Test methods for hot mix asphalt Part 27: Sampling 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 932-1:

    36、1996 and the following apply. 3.1 reclaimed asphalt asphalt made reusable by milling of asphalt road layers, by crushing of lumps torn up from asphalt pavements and asphalt from surplus production 3.2 coarse foreign matter matter that is greater in size than 8 mm in reclaimed asphalt not derived fro

    37、m asphalt pavements or surplus production, and cold asphalt produced with cut-back bitumen 3.3 primary source quarry or pit from which aggregate has traditionally been used successfully in the manufacture of one or more types of asphalt 3.4 secondary source quarry, pit or other source from which agg

    38、regate has not traditionally been used successfully in the manufacture of any type of asphalt DIN EN 12697-42:2013-03 EN 12697-42:2012 (E) 7 4 Principle The test methodology for determining the amount and components of coarse foreign matter in reclaimed asphalt consists of the visual inspection and

    39、determination of the composition of two sub-samples, taken from a representative sample of reclaimed asphalt. NOTE An optional method for determining the amount and components of finer foreign matter in reclaimed asphalt is given in Annex A. 5 Apparatus 5.1 Sieve, with a nominal aperture size of 8 m

    40、m, conforming to EN 933-2. 5.2 Balance to weight to 1 g. 5.3 Sampling divider, conforming to either EN 932-1 or EN 12697-27. 5.4 Hydrochloric acid, 1 mol/l. 5.5 Solvent for hydrocarbons. 5.6 Water. 6 Preparation of the sample 6.1 The reclaimed asphalt on the feedstock shall be visually inspected for

    41、 the presence of coarse foreign materials. When coarse foreign matter is present, take a representative sample of reclaimed asphalt from the feedstock. The sample shall be at least 20 kg. 6.2 Sieve the sample using the sieve described in 5.1. Take the portion of the sample remaining in the sieve and

    42、 divide it into two sub-samples by means of the sampling divider. NOTE The composition of the fraction of the sample remaining in the sieve is taken to be representative of the composition of the total amount of reclaimed asphalt from which the sample was taken. 7 Procedure 7.1 The two sub-samples s

    43、hall be visually inspected for the presence of coarse foreign matter and the composition of each sub-sample shall be established as specified in 7.2. Each sub-sample shall be visually inspected and its composition determined and the two analyses shall be independent of each other. NOTE 1 Cold asphal

    44、t produced with cut-back bitumen may be hard to distinguish from “asphalt“. However, in that case, the cold asphalt may be considered as “asphalt”: any cut-back in the reclaimed asphalt will affect binder. Distinction is favourable as the presence of flux may influence the final binder properties to

    45、 an unwanted level or may lead to safety risks during the production of recycling asphalt. NOTE 2 Because of the strong influence of the analyst on the test result executing the test twice by two independent analyses is required. 7.2 Each sub-sample shall be sorted into: a) natural aggregate and mat

    46、erial derived from asphalt; b) group 1 materials such as: DIN EN 12697-42:2013-03 EN 12697-42:2012 (E) 8 1) cement concrete, including cement concrete products; 2) bricks; 3) sub base materials (excluding natural aggregate); 4) cement mortar; 5) metal. c) group 2 materials such as: 1) synthetic mate

    47、rials; 2) wood; 3) plastics. NOTE 1 If necessary, washing the material with water before inspection may be helpful in order to facilitate the inspection. NOTE 2 In case of doubt, the presence of concrete can be proved by use of hydrochloric acid, and asphalt by use of dichloromethane. 7.3 The mass o

    48、f asphalt, cold asphalt produced with cut-back bitumen and coarse foreign matter not derived from asphalt (divided into side materials and other materials), shall each be determined to an accuracy of 1 g. 7.4 Calculate the content of asphalt, cold asphalt produced with cut-back bitumen and coarse foreign matter not derived from asphalt (divided into side materia


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