1、BSI Standards PublicationBS EN 12697-49:2014Bituminous mixtures Testmethods for hot mix asphaltPart 49: Determination of friction afterpolishingBS EN 12697-49:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12697-49:2014.The UK participation in its preparat
2、ion 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 for its correctapplication.
3、 The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 76464 6ICS 93.080.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 2
4、8 February 2014.Amendments issued since publicationDate Text affectedBS EN 12697-49:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12697-49 January 2014 ICS 93.080.20 English Version Bituminous mixtures - Test methods for hot mix asphalt - Part 49: Determination of friction after polishing
5、 Mlanges bitumineux - Mthodes dessai pour mlange hydrocarbon chaud - Partie 49: Dtermination du coefficient de frottement aprs polissage Asphalt - Prfverfahren fr Heiasphalt - Teil 49: Messung der Griffigkeit nach Polierung This European Standard was approved by CEN on 9 November 2013. CEN members a
6、re 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
7、 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 C
8、entre 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, Lithu
9、ania, Luxembourg, Malta, Netherlands, 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-
10、1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12697-49:2014 EBS EN 12697-49:2014EN 12697-49:2014 (E) 2 Contents Page Foreword 3 1 Scope 6 2 Normative references 6 3 Terms, definitions and symbols .6 3.1 Terms a
11、nd definitions .6 3.2 Symbols 6 4 Principle 7 5 Equipment 7 5.1 Test device .7 5.1.1 General 7 5.1.2 Polishing unit .7 5.1.3 Specimen clamping system . 10 5.1.4 Friction measuring unit 10 5.2 Glass-control plate . 12 5.3 Sand-blasting-equipment . 12 6 Other materials 12 6.1 Quartz powder . 12 6.2 Wa
12、ter quartz powder mixture 13 6.3 Corundum 13 7 Test method . 13 7.1 Preparation of the specimens . 13 7.1.1 Specimens prepared in the laboratory . 13 7.1.2 Specimens taken from the site 13 7.2 Polishing procedure . 14 7.3 Friction measurement 14 7.3.1 Pre-test check of the measurement device 14 7.3.
13、2 Friction test . 15 8 Calculation and expression of the results . 15 8.1 Friction force and friction coefficient . 15 8.2 Determination of FAP . 15 9 Test report . 16 10 Precision 16 Annex A (informative) Example of polishing head and friction unit . 17 Bibliography . 18 BS EN 12697-49:2014EN 12697
14、-49:2014 (E) 3 Foreword This document (EN 12697-49:2014) 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 endorsemen
15、t, at the latest by July 2014, and conflicting national standards shall be withdrawn at the latest by July 2014. 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
16、or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This European Standard is one of a series of standards as listed below: EN 12697-1, Bituminous mixtures Test methods for hot mix asphalt Part 1:
17、 Soluble binder content EN 12697-2, Bituminous mixtures Test methods for hot mix asphalt Part 2: Determination of particle size distribution 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 h
18、ot mix asphalt Part 4: Bitumen recovery: Fractionating column EN 12697-5, Bituminous mixtures Test methods for hot mix asphalt Part 5: Determination of the maximum density EN 12697-6, Bituminous mixtures Test methods for hot mix asphalt Part 6: Determination of bulk density of bituminous specimens E
19、N 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 hot mix asphalt Part 8: Determination of void characteristics of bituminous specimens EN 12697-10, Bituminous m
20、ixtures Test methods for hot mix asphalt Part 10: Compactability EN 12697-11, Bituminous mixtures Test methods for hot mix asphalt Part 11: Determination of the affinity between aggregate and bitumen EN 12697-12, Bituminous mixtures Test methods for hot mix asphalt Part 12: Determination of the wate
21、r sensitivity of bituminous specimens EN 12697-13, Bituminous mixtures Test methods for hot mix asphalt Part 13: Temperature measurement EN 12697-14, Bituminous mixtures Test methods for hot mix asphalt Part 14: Water content EN 12697-15, Bituminous mixtures Test methods for hot mix asphalt Part 15:
22、 Determination of the segregation sensitivity BS EN 12697-49:2014EN 12697-49:2014 (E) 4 EN 12697-16, Bituminous mixtures Test methods for hot mix asphalt Part 16: Abrasion by studded tyres EN 12697-17, Bituminous mixtures Test methods for hot mix asphalt Part 17: Particle loss of porous asphalt spec
23、imen 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 specimen EN 12697-20, Bituminous mixtures Test methods for hot mix asphalt Part 20: Indentation using cube or cyl
24、indrical 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 asphalt Part 22: Wheel tracking EN 12697-23, Bituminous mixtures Test methods for hot mix asphalt Part 23: De
25、termination 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 mixtures Test methods for hot mix asphalt Part 25: Cyclic compression test EN 12697-26, Bituminous mixtures Te
26、st 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 asphalt Part 28: Preparation of samples for determining binder content, water content and grading EN 12697-2
27、9, 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 30: Specimen preparation by impact compactor EN 12697-31, Bituminous mixtures Test methods for hot mix aspha
28、lt Part 31: Specimen preparation by gyratory compactor EN 12697-32, Bituminous mixtures Test methods for hot mix asphalt Part 32: Laboratory compaction of bituminous mixtures by vibratory compactor EN 12697-33, Bituminous mixtures Test methods for hot mix asphalt Part 33: Specimen prepared by roller
29、 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 mix asphalt Part 35: Laboratory mixing EN 12697-36, Bituminous mixtures Test methods for hot mix asphalt Part 36: Determination of the thickness o
30、f 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 precoated chippings for HRA BS EN 12697-49:2014EN 12697-49:2014 (E) 5 EN 12697-38, Bituminous mixtures Test methods for hot mix asphalt Part 38: Common equ
31、ipment 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 40: In situ drainability EN 12697-41, Bituminous mixtures Test methods for hot mix asphalt Part 41: Resi
32、stance 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 for hot mix asphalt Part 43: Resistance to fuel EN 12697-44, Bituminous mixtures Test methods for hot mix a
33、sphalt 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 test EN 12697-46, Bituminous mixtures Test methods for hot mix asphalt Part 46: Low temperature cracking
34、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 mixtures Test methods for hot mix asphalt Part 48: Interlayer Bonding (Torque bond test TBT, Shear bond t
35、est - SBT, Tensile Adhesion Test (TAT)1)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 for hot mix asphalt Part 50: Scuffing resistance of surface course1) According to the CEN-C
36、ENELEC 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 Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary,
37、 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. BS EN 12697-49:2014EN 12697-49:2014 (E) 6 1 Scope This European Standard describes a test
38、method to determine the friction at 60 km/h after polishing during a fixed number of passes on surfaces of bituminous mixtures samples. The samples used are either produced in a laboratory or are cores taken from the site. NOTE This procedure was previously known as Wehner and Schulze method (see 1)
39、. 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 ame
40、ndments) applies. EN 12697-27, Bituminous mixtures - Test methods for hot mix asphalt - Part 27: Sampling EN 12697-33, Bituminous mixtures Test methods for hot mix asphalt Part 33: Specimen prepared by roller compactor ISO 4662, Rubber, vulcanized or thermoplastic Determination of rebound resilience
41、 ISO 7619-1, Rubber, vulcanized or thermoplastic Determination of indentation hardness Part 1: Durometer method (Shore hardness) 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 pass application of a single
42、 roller of the polishing head, a complete revolution of which is equivalent to three passes of the roller 3.2 Symbols FAPsingle result of friction mfriction coefficient at 60 km/h kmmean value of the control plate before and after the friction measurement refknown value of the Laboratory Skid Resist
43、ance of the control plate FAP Friction After Polishing: average of two or more single results FAP diameter in mm BS EN 12697-49:2014EN 12697-49:2014 (E) 7 4 Principle The sample is polished and the friction force is determined. The device comprises a polishing station and a unit for measuring the fr
44、iction. The polishing station, which is continuously supplied with a mixture of water and quartz powder, contains three polishing rollers that can be lowered and that move across the test surface at a predefined loading force. In the friction measuring unit, a rotating measuring head is lowered onto
45、 the test surface while water is being added. The measuring head is fitted with three sliding blocks and can be declutched electronically. The moment generated by the contact between the rubber sliders and the surface is continuously measured and recorded until the measuring head comes to a standsti
46、ll. The friction is subsequently calculated from the moment measured at 60 km/h. 5 Equipment 5.1 Test device 5.1.1 General The test device consists of a unit to polish the sample, a specimen clamping system and a unit for measuring its friction. 5.1.2 Polishing unit 5.1.2.1 General The polishing uni
47、t includes a polishing head with polishing rollers and a water-quartz powder mixture projection system. 5.1.2.2 Polishing head A polishing head equipped with three polishing rollers as indicated on Figure 1, able to be lowered onto the test surface with loading force calibrated in static of (392 3)
48、N. The polishing head shall move on the surface of the specimen during the polishing procedure and rotate at a rotation speed of (500 5) r/min. BS EN 12697-49:2014EN 12697-49:2014 (E) 8 Dimensions in millimetres Key 1 polishing roller 2 water quartz powder projection device Figure 1 Polishing head (
49、view from below) 5.1.2.3 Polishing rollers The rollers, as shown in Figure 2, consist of a circular, cone-shaped metal carrier housing covered with an (8,5 0,5) mm thick layer of rubber at the start of the test. Eight profile grooves with a depth of (4,5 0,5) mm and a width of (3,5 0,5) mm are cut into this rubber layer. The polishing rollers sh
