1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Part 8: Reclaimed asphaltThe European Standard EN 13108-8:2005 has the status of a British Standard
2、ICS 93.080.20Bituminous mixtures Material specifications BRITISH STANDARDBS EN 13108-8:2005BS EN 13108-8:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 13 December 2005 BSI 13 December 2005ISBN 0 580 47356 2request to its secretary.Cross
3、-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of Br
4、itish Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a fro
5、nt cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comments present to the responsible international/European committee any
6、enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.A list of organizations represented on this subcommittee can be obtained on National forewordThis British Standard is the of
7、ficial English language version of EN 13108-8:2005. The UK participation in its preparation was entrusted by Technical Committee B/510, Road materials, to Subcommittee B/510/1, Coated macadam and hot asphalt, which has the responsibility to: aid enquirers to understand the text;EUROPEAN STANDARDNORM
8、E EUROPENNEEUROPISCHE NORMEN 13108-8October 2005ICS 93.080.20English VersionBituminous mixtures - Material specifications - Part 8: ReclaimedasphaltMlanges bitumineux - Spcifications de matriaux - Partie8 : Agrgats denrobsAsphaltmischgut - Mischgutanforderungen - Teil 8:AusbauasphaltThis European St
9、andard was approved by CEN on 29 August 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning
10、such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language
11、and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Ne
12、therlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any fo
13、rm and by any means reservedworldwide for CEN national Members.Ref. No. EN 13108-8:2005: EEN 13108-8:2005 (E) 2 Contents Page Foreword 3 Introduction4 1 Scope .5 2 Normative references .5 3 Terms, definitions, symbols and abbreviations .5 3.1 Terms and definitions.5 3.2 Symbols and abbreviations6 4
14、Requirements for the feedstock 6 4.1 Foreign matter.6 4.2 Binder 7 4.2.1 Type of binder .7 4.2.2 Binder properties 7 4.3 Aggregate grading and D .8 4.4 Binder content.8 4.5 Particle size reclaimed asphalt 8 5 Description of the feedstock8 5.1 Source of reclaimed asphalt 8 5.2 Type and properties of
15、aggregate8 5.3 Homogeneity .9 5.4 Sampling and Testing.9 5.4.1 Feedstock 9 5.4.2 Sampling and number of samples, n.9 5.4.3 Testing .9 5.4.4 Reclaimed asphalt for low percentage additions .9 5.5 Stock control .9 6 Identification9 EN 13108-8:2005 (E) 3 Foreword This European Standard (EN 13108-8:2005)
16、 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 April 2006, and conflicting national
17、 standards shall be withdrawn at the latest by January 2008. This European Standard does not replace any existing European Standard. This European Standard is one of a series as listed below: prEN 13108-1, Bituminous mixtures Material specifications Part 1: Asphalt concrete. prEN 13108-2, Bituminous
18、 mixtures Material specifications Part 2: Asphalt concrete for very thin layers. prEN 13108-3, Bituminous mixtures Material specification Part 3: Soft asphalt. prEN 13108-4, Bituminous mixtures Material specification Part 4: Hot rolled asphalt. prEN 13108-5, Bituminous mixtures Material specificatio
19、ns Part 5: Stone mastic asphalt. prEN 13108-6, Bituminous mixtures Material specifications Part 6: Mastic asphalt. prEN 13108-7, Bituminous mixtures Material specifications Part 7: Porous asphalt(PA). prEN 13108-10, Bituminous mixtures Quality Part 10: Factory production control. prEN 13108-20, Bitu
20、minous mixtures Material specifications Part 20:Type testing. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
21、 Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 13108-8:2005 (E) 4 Introduction The increasing use of recycling in asphalt production makes it necess
22、ary to specify reclaimed asphalt sold as a constituent material in a way similar to that of aggregates and binders. In the asphalt product standards prEN 13108-1 up to and including prEN 13108-7 the use of reclaimed asphalt is permitted with requirements related to the percentage addition. Reclaimed
23、 asphalt comprises asphalt, reclaimed by milling of asphalt road layers, by crushing of slabs ripped up from asphalt pavements, lumps from slabs, and asphalt from reject and surplus production. Reclaimed asphalt (RA) may be used as a constituent material for bituminous mixtures manufactured in a hot
24、 mix asphalt plant, in accordance with the specifications for those mixtures. This European Standard contains requirements for reclaimed asphalt with respect to binder and aggregate properties and foreign matter that apply in all cases of usage of reclaimed asphalt. Additionally, this European Stand
25、ard indicates which properties of the reclaimed asphalt and its constituent materials shall be declared and documented if a description of a feedstock is required. The particle size of the aggregate, the properties of the binder, and foreign matter in the reclaimed asphalt are relevant to the qualit
26、y of the product, i.e. the fresh asphalt in which it is mixed. The size of the particles of asphalt in the reclaimed asphalt, which may range from large lumps to finely milled material, is relevant only to the process to be used to mix into the fresh asphalt. Since the requirements for the asphalt m
27、ixtures are the same for mixtures with and without reclaimed asphalt, the level of homogeneity of the material in practice determines the maximum amount of reclaimed asphalt that may be used. EN 13108-8:2005 (E) 5 1 Scope This European Standard specifies requirements for the classification and descr
28、iption of reclaimed asphalt as a constituent material for asphalt mixtures. This European Standard only specifies reclaimed asphalt with bituminous binders: paving grade bitumen, modified bitumen or hard grade bitumen. 2 Normative references The following referenced documents are indispensable for t
29、he application of this European Standard. 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, Test for general properties of aggregates Part 1: Methods for sampling EN 1426, Bitumen
30、and bituminous binders Determination of needle penetration EN 1427, Bitumen and bituminous binders Determination of softening point Ring and Ball method EN 12596, Bitumen and bituminous binders - Determination of dynamic viscosity by vacuum capillary EN 12697-1, Bituminous mixtures Test methods for
31、hot mix asphalt Part 1: Soluble binder content EN 12697-3, Bituminous mixtures Test methods for hot mix asphalt Part 3: Bitumen recovery: Rotary evaporator EN 12697-4, Bituminous mixtures Test methods for hot mix asphalt Part 4: Bitumen recovery: Fractionating column prEN 12697-42, Bituminous mixtur
32、es Test methods for hot mix asphalt Part 42: Amount of foreign matters in reclaimed asphalt. EN 13043, Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas 3 Terms, definitions, symbols and abbreviations 3.1 Terms and definitions For the purpose o
33、f this European Standard, the following terms and definitions apply. 3.1.1 asphalt mixture of aggregates and bituminous binder 3.1.2 reclaimed asphalt asphalt reclaimed by milling of asphalt road layers, by crushing of slabs ripped up from asphalt pavements or lumps from asphalt slabs and asphalt fr
34、om reject and surplus production EN 13108-8:2005 (E) 6 3.1.3 feedstock of reclaimed asphalt defined quantity of material to be used as a constituent material for the manufacturing of hot asphalt mixtures 3.1.4 aggregate size designation of the size of the aggregate in the reclaimed asphalt in terms
35、of lower (d) and upper (D) sieve sizes, expressed as d/D. For reclaimed asphalt, d will almost invariably be 0 3.1.5 particle size of reclaimed asphalt maximum size of the pieces of asphalt in the reclaimed material, expressed as a sieve size (U) 3.2 Symbols and abbreviations 3.2.1 D: upper sieve si
36、ze of the aggregate in the reclaimed asphalt, in millimetres D is the larger of: sieve M/1,4, where M is the smallest sieve with 100 % passing; and smallest sieve with 85 % passing 3.2.2 U particle size of reclaimed asphalt Smallest sieve size in mm through which 100 % of the asphalt particles pass
37、3.2.3 U RA d/D size designation of the reclaimed asphalt Reclaimed asphalt shall be designated by the abbreviation RA, preceded by the asphalt particle size designation U and followed by the aggregate size designation d/Dmm EXAMPLE 40 RA 0/8 mm: Reclaimed asphalt, of which the aggregate has an upper
38、 sieve size of 8 mm and the asphalt particles have a maximum size of 40 mm. 4 Requirements for the feedstock 4.1 Foreign matter The presence, content and type of any foreign matter, as defined below, shall be documented and the category declared. The content of foreign matter shall be determined acc
39、ording to prEN 12697-42. Foreign matter comprises materials other than natural aggregate, not derived from asphalt and are divided in two groups: Group 1 materials such as: cement concrete, including cement concrete products; bricks; EN 13108-8:2005 (E) 7 sub base material ( excluding natural aggreg
40、ate ); cement mortar; metal; and Group 2 materials such as: synthetic materials; wood; plastics. The reclaimed asphalt shall be classified in terms of foreign matter content as described below: Category F1- content of group 1 material not greater than 1 %, content of group 2 material not greater tha
41、n 0,1 %; Category F5- content of group 1 material not greater than 5 %, content of group 2 material not greater than 0,1 %; Category Fdec- content and nature of all foreign matter declared. 4.2 Binder 4.2.1 Type of binder The type of binder shall be documented and declared. This declaration shall in
42、dicate whether the binder is mainly a paving grade bitumen, a modified bitumen, or a hard grade bitumen or if the reclaimed asphalt in the feedstock contains a modifier additive. The declaration shall be based on either contemporary or earlier investigations and information. 4.2.2 Binder properties
43、When required(see Note), either the mean penetration, the mean softening point or the viscosity of the binder of the samples according to 5.4.2 shall be documented and declared as either fixed categories or declared values as described below. NOTE The recovery of bitumen involves the use of potentia
44、lly harmful solvents and should be limited to the minimum essential frequency. When the feedstock contains mainly reclaimed asphalt with paving grade bitumen the binder properties shall be declared in one of the following ways: reclaimed asphalt shall be categorised as P15if the penetration of the b
45、inder of each of the samples according to 5.4.2 is at least 10d mm and the mean penetration of all of the samples is at least 15d mm, or reclaimed asphalt shall be categorised as S70 if softening point of the binder of each of the samples according to 5.4.2 is no greater than 77 oC and the mean soft
46、ening point of all of the samples is no greater than 70 oC. for other reclaimed asphalt, either the mean penetration values or the mean softening points shall be declared as category Pdec or Sdec. for reclaimed asphalt to be used in soft asphalt, the mean viscosity at 60 0C shall be declared as Vdec
47、. EN 13108-8:2005 (E) 8 The binder shall be recovered according to EN 12697-3 or EN 12697-4. The penetration shall be determined according to EN 1426. The softening point shall be determined according to EN 1427. The viscosity of the binder shall be determined in accordance with EN 12596. When the f
48、eedstock contains asphalt with other than paving grade bitumen, a declaration shall be made of the nature and properties of the binder, based on either contemporary or earlier investigations and information, to enable evaluation of its suitability. 4.3 Aggregate grading and D The mean grading of the
49、 aggregate from the samples according to 5.4.2 shall be declared. The grading shall be expressed in percentages passing the sieves 1,4 D; D; 2 mm and 0,063 mm and (a) coarse sieve(s) between D and 2 mm and (a) sieve(s) between 2 mm and 0,063 mm. Coarse sieves shall be selected from basic set plus either set 1 or set 2 according to EN 13043. The fine sieves shall be selected from the sieves 1 mm, 0,5 mm, 0,25 mm and 0,125 mm. D shall be determined
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