FprEN 12697-47

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORMFINAL DRAFT FprEN 12697-47 April 2012 ICS 93.080.20 Will supersede EN 12697-42:2005 English Version Bituminous mixtures - test methods for hot mix asphalt - Part 42: Amount of foreign matter in reclaimed asphalt Mélanges bitumineux - Méthodes d'essai pour mélange hydrocarboné à chaud - Partie 42: Quantité de matériaux étrangers présents dans les agrégats d'enrobés Asphalt - Prüfverfahren für Heißasphalt - Teil 42: Fremdstoffgehalt in Ausbauasphalt This draft European Standard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee CEN/TC 227. If this draft becomes a European Standard, 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. This draft European Standard was established by CEN 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, 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. Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation. Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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. FprEN 12697-47:2012: E ................... 10 A......................6 Normative references ..................................................................6 Terms and definitions ............................................................................................................................................................................................................ 11 A............................... 10 A.. 11 A.......................................................................................................................................................................2 Apparatus ........................................................................................................................1 Additional definitions .........................................................................................................................................7 Expression of results .............................. 11 2 ..............................................................4 Procedure ..............................................................................................................................................5 Expression of results ............................6 Test report ......7 Procedure ...................................................... 10 A.............................................................................................................................................................................................................................................................................................................7 Preparation of the sample .............................................3 1 2 3 4 5 6 7 8 9 10 Scope ................................7 Apparatus .....................................................................................................................................................................................................................................................................................................................................................................8 Precision data .................................................................................................................................... 10 A.............................3 Preparation of the sample ................9 Annex A (informative) Amount of foreign matter in finer fractions ..........................................................................................8 Test report ...................................................................................................................................................................................................6 Principle ........FprEN 12697-42:2012 (E) Content Page Foreword ...................................................... Bituminous mixtures — Test methods for hot mix asphalt — Part 2: Determination of particle size distribution. Bituminous mixtures — Test methods for hot mix asphalt — Part 5: Determination of the maximum density. Bituminous mixtures — Test methods for hot mix asphalt — Part 9: Determination of the reference density. — classifications for material brought directly into line with those in EN 13108-8.FprEN 12697-42:2012 (E) Foreword This document (FprEN 12697-42:2012) has been prepared by Technical Committee CEN/TC 227 “Road materials”. Bituminous mixtures — Test methods for hot mix asphalt — Part 6: Determination of bulk density of bituminous specimens. The significant changes from that document are: — definition of coarse foreign matter includes 8 mm minimum size. EN 12697-8. This document is one of a series of standards as listed below: EN 12697-1. Exposure levels are related to both handling procedures and ventilation provision and it is emphasised that adequate training should be given to staff employed in the usage of these substances. the secretariat of which is held by DIN. 3 . Bituminous mixtures —Test methods for hot mix asphalt — Part 3: Bitumen recovery: Rotary evaporator. Bituminous mixtures — Test methods for hot mix asphalt — Part 7: Determination of bulk density of bituminous specimens by gamma rays. Bituminous mixtures — Test methods for hot mix asphalt — Part 4: Bitumen recovery: Fractionating column. Bituminous mixtures — Test methods for hot mix asphalt — Part 8: Determination of void characteristics of bituminous specimens. This document will supersede EN 12697-42:2005. EN 12697-6. EN 12697-4. This document is currently submitted to the Unique Acceptance Procedure. — solvent for hydrocarbons made less specific. EN 12697-5. — annex for analysis of finer material added. EN 12697-9. EN 12697-10. EN 12697-3. WARNING — The methods described in this draft European 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. Bituminous mixtures — Test methods for hot mix asphalt — Part 10: Compactibility. Bituminous mixtures — Test methods for hot mix asphalt — Part 1: Soluble binder content. — source of reclaimed asphalt to be reported clarified. EN 12697-2. EN 12697-7. EN 12697-17. Bituminous mixtures — Test methods for hot mix asphalt — Part 23: Determination of the indirect tensile strength of bituminous specimens. EN 12697-21. EN 12697-23. Bituminous mixtures — Test methods for hot mix asphalt — Part 29: Determination of the dimensions of a bituminous specimen. EN 12697-32. Bituminous mixtures — Test methods for hot mix asphalt — Part 28: Preparation of samples for determining binder content. Bituminous mixtures — Test methods for hot mix asphalt — Part 17: Particle loss of porous asphalt specimen. Bituminous mixtures — Test methods for hot mix asphalt — Part 21: Indentation using plate specimens. EN 12697-14. 4 . Bituminous mixtures — Test methods for hot mix asphalt — Part 16: Abrasion by studded tyres. EN 12697-25. Bituminous mixtures — Test methods for hot mix asphalt — Part 20: Indentation using cube or Marshall specimens. EN 12697-30. Bituminous mixtures — Test methods for hot mix asphalt — Part 27: Sampling. Bituminous mixtures — Test methods for hot mix asphalt — Part 15: Determination of the segregation sensitivity. Bituminous mixtures — Test methods for hot mix asphalt — Part 32: Laboratory compaction of bituminous mixtures by a vibratory compactor. EN 12697-18. EN 12697-29. Bituminous mixtures — Test methods for hot mix asphalt — Part 24: Resistance to fatigue. Bituminous mixtures — Test methods for hot mix asphalt — Part 14: Water content. EN 12697-15. water content and grading. Bituminous mixtures — Test methods for hot mix asphalt — Part 26: Stiffness.FprEN 12697-42:2012 (E) EN 12697-11. EN 12697-20. EN 12697-16. EN 12697-26. Bituminous mixtures — Test methods for hot mix asphalt — Part 30: Specimen preparation by impact compactor. Bituminous mixtures — Test methods for hot mix asphalt — Part 31: Specimen preparation by gyratory compactor. Bituminous mixtures — Test methods for hot mix asphalt — Part 13: Temperature measurement. EN 12697-13. Bituminous mixtures — Test methods for hot mix asphalt — Part 18: Binder drainage. EN 12697-24. EN 12697-28. EN 12697-31. Bituminous mixtures — Test methods for hot mix asphalt — Part 19: Permeability of specimen. Bituminous mixtures — Test methods for hot mix asphalt — Part 11: Determination of the affinity between aggregate and bitumen. Bituminous mixtures — Test methods for hot mix asphalt — Part 12: Determination of the water sensitivity of bituminous specimens. EN 12697-19. EN 12697-22. Bituminous mixtures — Test methods for hot mix asphalt — Part 25: Cyclic compression test. EN 12697-27. Bituminous mixtures — Test methods for hot mix asphalt — Part 22: Wheel tracking. EN 12697-12. EN 12697-43. by roller compactor. Bituminous mixtures — Test methods for hot mix asphalt — Part 40: In-situ drainability EN 12697-41. Bituminous mixtures  Test methods for hot mix asphalt  Part 45: Saturation ageing tensile stiffness (SATS) conditioning test prEN 12697-46. Bituminous mixtures — Test methods for hot mix asphalt — Part 35: Laboratory mixing. Bituminous mixtures — Test methods for hot mix asphalt — Part 41: Resistance to de-icing fluids. Bituminous mixtures  Test methods for hot mix asphalt  Part 46: Low temperature cracking and properties by uniaxial tension tests EN 12697-47. EN 12697-38. Bituminous mixtures — Test methods for hot mix asphalt — Part 39: Binder content by ignition. Bituminous mixtures — Test methods for hot mix asphalt — Part 43: Resistance to fuel. EN 12697-35. Bituminous mixtures — Test methods for hot mix asphalt — Part 33: Specimen prepared. Bituminous mixtures — Test methods for hot mix asphalt — Part 49: Determination of friction 1) after polishing prEN 12697-50. Bituminous mixtures — Test methods for hot mix asphalt — Part 34: Marshall test. Bituminous mixtures — Test methods for hot mix asphalt — Part 42: Amount of coarse foreign matter in reclaimed asphalt. Bituminous mixtures — Test methods for hot mix asphalt — Part 50: Scuffing resistance of 1) surface course asphalt 1) In preparation 5 .FprEN 12697-42:2012 (E) EN 12697-33. Bituminous mixtures  Test methods for hot mix asphalt  Part 47: Determination of the ash content of natural asphalts prEN 12697-48. Bituminous mixtures — Test methods for hot mix asphalt — Part 38: Common equipment and calibration. EN 12697-37. EN 12697-36. EN 12697-40. Bituminous mixtures — Test methods for hot mix asphalt — Part 48: Interlayer bond strength1) prEN 12697-49. EN 12697-44. Bituminous mixtures  Test methods for hot mix asphalt  Part 44: Crack propagation by semi-circular bending test prEN 12697-45. EN 12697-42. Bituminous mixtures — Test methods for hot mix asphalt — Part 36: Determination of the thickness of a bituminous pavement. EN 12697-39. Bituminous mixtures — Test methods for hot mix asphalt — Part 37: Hot sand test for the adhesivity of binder on precoated chippings for HRA. EN 12697-34. EN 12697-27.1 reclaimed asphalt asphalt made reusable by milling of asphalt road layers. only the edition cited applies. the latest edition of the referenced document (including any amendments) applies. 2 Normative references The following documents. 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 asphalt mix.2 coarse foreign matter matter that is greater in size than 8 mm in reclaimed asphalt not derived from asphalt pavements or surplus production. in whole or in part. 3. Bituminous mixtures — Test methods for hot mix asphalt — Part 27: Sampling 3 Terms and definitions For the purposes of this document. Test for general properties of aggregates — Part 1: Methods for sampling. For dated references.4 secondary source quarry. and cold asphalt produced with cut-back bitumen 3. NOTE 1 For the use of reclaimed asphalt in asphalt mixtures. A method for determining the amount and components of finer foreign matter in reclaimed asphalt is given in Annex A. Test for geometrical properties of aggregates — Part 2: Determination of particle size distribution — Test sieves. EN 932-1:1996. by crushing of lumps torn up from asphalt pavements and asphalt from surplus production 3. nominal size of apertures. are normatively referenced in this document and are indispensable for its application. the terms and definitions given in EN 932-1:1996 and the following apply. EN 933-2.FprEN 12697-42:2012 (E) 1 Scope This European Standard specifies a visual method of determining the amount and components of coarse foreign matter in reclaimed asphalt. This method does not completely categorise the foreign matter that can occur in asphalt.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. For undated references. pit or other source from which aggregate has not traditionally been used successfully in the manufacture of any type of asphalt 6 . 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. taken from a representative sample of reclaimed asphalt.1 5. 7 Procedure 7.2 5. 5 5. Solvent for hydrocarbons. 6 Preparation of the sample 6. 7 .6 Apparatus Sieve. When coarse foreign matter is present. Each sub-sample shall be visually inspected and its composition determined and the two analyses shall be independent of each other. take a representative sample of reclaimed asphalt from the feedstock.1 The reclaimed asphalt on the feedstock shall be visually inspected for the presence of coarse foreign materials. 6. Hydrochloric acid.4 5. However in that case the cold asphalt may be considered as “asphalt”: any cut-back in the reclaimed asphalt will affect binder. NOTE 1 Cold asphalt produced with cut-back bitumen may be hard to distinguish from "asphalt". 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. Sampling divider. Water. NOTE 2 Because of the strong influence of the analyst on the test result executing the test twice by two independent analyses is required.2. Take the portion of the sample remaining in the sieve and divide it into two sub-samples by means of the sampling divider. 7.2 Sieve the sample using the sieve described in 5. conforming to EN 933-2. Distinction is favourable as the presence of flux may influence the final binder properties to an unwanted level or may lead to safety risks during the production of recycling asphalt. 1 mol/l.5 5. Balance to weight to 1 g. conforming to either EN 932-1 or EN 12697-27.FprEN 12697-42:2012 (E) 4 Principle The test methodology for determining the amount and components of coarse foreign matter in reclaimed asphalt consists of the visual inspection and determination of the composition of two sub-samples. with a nominal aperture size of 8 mm.3 5. NOTE An optional method for determining the amount and components of finer foreign matter in reclaimed asphalt is given in Annex A.1.1 The two sub-samples shall 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 sorted into: a) natural aggregate and material derived from asphalt. The sample shall be at least 20 kg. 1 % by mass. cold asphalt produced with cut-back bitumen and coarse foreign matter not derived from asphalt (divided into side materials and other materials). if known). the presence of concrete can be proved by use of hydrochloric acid. content of material derived from asphalt.5 If the mass of coarse foreign matter obtained from the sub-samples by each independent analyse differs from that obtained by the other independent analyse by more than 5 % by mass. c) group 2 materials such as: − synthetic materials. − cement mortar and − metal. including cement concrete products. the cause of this difference shall be investigated. to an accuracy of 0.1 % by mass. − sub base materials (excluding natural aggregate). date on which and the time at which the test was carried out. − wood and − plastics. to an accuracy of 0. 8 Expression of results Calculate the content of material derived from asphalt. NOTE 1 If necessary.1 % by mass. − bricks. coarse foreign matter derived from asphalt and coarse foreign matter not derived from asphalt. expressed as the average of the results of both independent analyses. tonnage of the feedstock. and asphalt by use of dichloromethane. shall each be determined to an accuracy of 1 g. a new representative sample is taken and the test is performed once more. washing the material with water before inspection may be helpful in order to facilitate the inspection. 7. 9 Test report The test report shall include the following information: a) b) c) d) identification of the feedstock. coarse foreign matter derived from asphalt and coarse foreign matter not derived from asphalt.3 The mass of asphalt. e) 8 . expressed as the average of the results of both analyses. NOTE 2 In case of doubt.FprEN 12697-42:2012 (E) b) group 1 materials such as − cement concrete. 7. cold asphalt produced with cut-back bitumen and coarse foreign matter not derived from asphalt (divided into side materials and other materials) in the sub-sample. NOTE If no explanation for a difference in mass is found. to an accuracy of 0.4 Calculate the content of asphalt. 7. source of reclaimed asphalt (mixture and locations from which the feedstock has been derived. as a percentage by mass. FprEN 12697-42:2012 (E) 10 Precision data Precision data are not available. 9 . the finer fractions of foreign matter in a sample of reclaimed asphalt are assumed to be similar to that of the coarse foreign matter.2.1 The reclaimed asphalt on the feedstock shall be visually inspected for the presence of finer foreign materials. Therefore. . and . NOTE 1 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. A.6 mm. with a nominal aperture size of 4 mm. and it is assumed that the repeatability and reproducibility will be significantly greater (although no precision studies have been undertaken as yet).3 mm or 5. take a representative sample of reclaimed asphalt from the feedstock. conforming to EN 933-2.when the reclaimed asphalt has been transported in vehicles previously used for a material of predominant size less than 8 mm without adequate cleaning. The fraction actually tested needs to be clearly associated with the result in any report. there are situations which cast doubt on that assumption.3. However. Both sub-samples shall contain between 100 and 200 particles.1 A.2 Apparatus A. and cold asphalt produced with cut-back bitumen Note 1 to entry: It is also possible to use fractions 6.3.2. A. undertaking such tests is only required when strictly necessary. including: .1 and A. The sample can be reduced to the correct number of particles by splitting the sample and discarding half. NOTE 2 The sample retained on the sieve when determining the coarse foreign material can be used for determining the finer foreign material after removing the undersized.3/8 mm or 5. It is possible to use a sieve with a nominal dimension of 6. NOTE 2 Testing for smaller fractions of foreign matter will be considerably more difficulty than testing for coarse foreign matter.when the reclaimed has been stored alongside a material of predominant size less than 8 mm. Sieve. A.2. testing a smaller fraction may be considered to be prudent. When finer foreign matter is present.2 Sieve the sample using the sieves described in 5. but the result will not be for the finer foreign matter as defined here. Take the portion of the sample passing the first sieve but remaining in the second sieve and divide it into two sub-samples by means of the sampling divider. repeating as necessary.6/8 mm.3 Preparation of the sample A.2.FprEN 12697-42:2012 (E) Annex A (informative) Amount of foreign matter in finer fractions NOTE 1 Generally. 10 .1 Additional definitions finer foreign matter matter that is greater in size than 4 mm but smaller than 8 mm in reclaimed asphalt not derived from asphalt pavements or surplus production. A.2 NOTE Equipment defined in Clause 5.when the reclaimed asphalt is exposed to significant amounts of small wind-blown detritus. In such circumstances. to an accuracy of 0. finer foreign matter derived from asphalt and finer foreign matter not derived from asphalt.FprEN 12697-42:2012 (E) A. A.6 Test report The test report shall include the information in Clause 9 together with: a) content of material derived from asphalt. expressed as the average of the results of both analyses. finer foreign matter derived from asphalt and finer foreign matter not derived from asphalt. expressed as the average of the results of both independent analyses. A. b) 11 .4 Procedure Follow the procedure in Clause 7 except for finer foreign matter rather coarse foreign matter.5 Expression of results Calculate the content of material derived from asphalt.1 % by mass.1 % by mass. fraction size tested. to an accuracy of 0.