1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12697-24:2012Bituminous mixtures Testmethods for hot mix asphaltPart 24: Resistance to fatigueBS EN 12697-24:2012 BRITISH STANDARDNational forewordThis British Standard is
2、the UK implementation of EN 12697-24:2012.It supersedes BS EN 12697-24:2004 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/510/1, Asphalt products.A list of organizations represented on this committee can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 p
3、ublication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 75769 3ICS 93.080.20Compliance with a British Standard cannot confer immuni
4、ty fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2012.Amendments issued since publicationDate Text affectedBS EN 12697-24:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12697-24 May 2012 ICS 93.080.20 S
5、upersedes EN 12697-24:2004+A1:2007English Version Bituminous mixtures - Test methods for hot mix asphalt - Part 24: Resistance to fatigue Mlanges bitumineux - Mthodes dessai pour mlange hydrocarbon chaud - Partie 24: Rsistance la fatigueAsphalt - Prfverfahren fr Heiasphalt - Teil 24: Bestndigkeit ge
6、gen Ermdung This European Standard was approved by CEN on 23 March 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 bibliogra
7、phical 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 responsibil
8、ity 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,
9、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 EUROPISCHES KOMITEE FR NORMUNG Mana
10、gement 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 12697-24:2012: EBS EN 12697-24:2012EN 12697-24:2012 (E) 2 Contents PageForeword 41 Scope 82 Normative references 83 Terms, defini
11、tions, symbols and abbreviations .83.1 General 93.2 Two-point bending test on trapezoidal specimens 93.3 Two-point bending test on prismatic shaped specimens 103.4 Three-point bending test on prismatic shaped specimens 123.5 Four-point bending test on prismatic shaped specimens . 133.6 Symbols for i
12、ndirect tensile test on cylindrical shaped specimens . 184 Sample preparation 194.1 Age of the specimens . 194.2 Drying of the specimen 194.3 Dimensions and bulk density of the specimens . 195 Failure 196 Calculations . 197 Summary of the procedures 197.1 Two-point bending test on trapezoidal specim
13、ens . 197.2 Two-point bending test on prismatic shaped specimens 197.3 Three-point bending test on prismatic shaped specimens 207.4 Four-point bending test on prismatic shaped specimens . 207.5 Indirect tensile test on cylindrical shaped specimens . 208 Checking of the testing equipment . 209 Test r
14、eport . 21Annex A (normative) Two-point bending test on trapezoidal shaped specimens . 22A.1 Principle . 22A.2 Equipment . 23A.3 Specimen preparation 23A.4 Procedure 26A.5 Calculation and expression of results 27A.6 Test report . 28A.7 Precision 28Annex B (normative) Two-point bending test on prisma
15、tic shaped specimens 30B.1 Principle . 30B.2 Equipment . 30B.3 Specimen preparation 31B.4 Procedure 31B.5 Calculation and expression of results 32B.6 Test report . 34B.7 Precision 34Annex C (normative) Three-point bending test on prismatic shaped specimens 35C.1 Principle . 35C.2 Equipment . 35C.3 S
16、pecimen preparation 36C.4 Procedure 36BS EN 12697-24:2012EN 12697-24:2012 (E) 3 PageC.5 Calculation and expression of results 37C.6 Test report 40C.7 Precision. 41Annex D (normative) Four-point bending test on prismatic shaped specimens 42D.1 Principle 42D.2 Equipment 44D.3 Specimen preparation . 45
17、D.4 Procedure . 46D.5 Calculation and expression of results 48D.6 Test report 48D.7 Precision. 48Annex E (normative) Indirect tensile test on cylindrical shaped specimens 49E.1 Principle 49E.2 Equipment 49E.3 Specimen preparation . 52E.4 Procedure . 53E.5 Calculation and reporting of results 53E.6 T
18、est report 56E.7 Precision. 56Bibliography 57BS EN 12697-24:2012EN 12697-24:2012 (E) 4 Foreword This document (EN 12697-24:2012) 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 nation
19、al standard, either by publication of an identical text or by endorsement, at the latest by November 2012, and conflicting national standards shall be withdrawn at the latest by November 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of pate
20、nt rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12697-24:2004+A1:2007. The main changes with respect to the previous edition are as follows: clarification in the scope that tests using different failure criteria a
21、re not comparable; definition of conventional criteria of fatigue for constant force deleted, leaving just constant displacement; definitions of the average and standard deviation of the fatigue life of a series of specimens for the two-point and four-point bending tests on prismatic specimens remov
22、ed; symbols for the frequency of the sinusoidal load applications and angular speed revised; requirements on age and drying of specimens added in the main text and removed from the individual annexes; limits on interpolation defined; alternative criterion given in a note; requirement for checking (r
23、ather than calibration of) the test equipment added in the main text and removed from the individual annexes; requirement added for the test report to include information on the chosen test method, the used testing equipment, results of the last check on calibration of the testing equipment and the
24、age of the specimen at the time of testing; the tolerance for the displacement of the trapezoidal specimen widened; measurements on the three-point bending test on prismatic specimens started after fewer cycles; note added on rotating the specimen in four-point bending test on prismatic specimens; t
25、he optional requirement for choosing frequency spectrum of initial complex (stiffness) moduli removed from the four-point bending test on prismatic specimens; the principle, equipment, procedure and calculations of the indirect tensile test on cylindrical specimens revised. This document is one of a
26、 series of standards for bituminous mixtures which includes the following: BS EN 12697-24:2012EN 12697-24:2012 (E) 5 EN 12697-1, Bituminous mixtures Test methods for hot mix asphalt Part 1: Soluble binder content EN 12697-2, Bituminous mixtures Test methods for hot mix asphalt Part 2: Determination
27、of particle size distribution EN 12697-3, Bituminous mixtures Test methods for hot mix asphalt Part 3: Binder recovery: Rotary evaporator EN 12697-4, Bituminous mixtures Test methods for hot mix asphalt Part 4: Binder recovery: Fractionating column EN 12697-5, Bituminous mixtures Test methods for ho
28、t 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 EN 12697-7, Bituminous mixtures Test methods for hot mix asphalt Part 7: Determination of bulk density of bitumino
29、us 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 mixtures Test methods for hot mix asphalt Part 10: Compactibility EN 12697-11, Bituminous mixtures Test methods fo
30、r 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 water sensitivity of bituminous specimens EN 12697-13, Bituminous mixtures Test methods for hot mix asphalt Part 13:
31、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: Determination of the segregation sensitivity EN 12697-16, Bituminous mixtures Test methods for hot mix asphalt P
32、art 16: Abrasion by studded tyres EN 12697-17, Bituminous mixtures Test methods for hot mix asphalt Part 17: Partial loss of porous asphalt specimen 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 as
33、phalt Part 19: Permeability of specimen EN 12697-20, Bituminous mixtures Test methods for hot mix asphalt Part 20: Indentation using cube or Marshall specimens EN 12697-21, Bituminous mixtures Test methods for hot mix asphalt Part 21: Indentation using plate specimens EN 12697-22, Bituminous mixture
34、s Test methods for hot mix asphalt Part 22: Wheel tracking EN 12697-23, Bituminous mixtures Test methods for hot mix asphalt Part 23: Determination of the indirect tensile strength of bituminous specimens BS EN 12697-24:2012EN 12697-24:2012 (E) 6 EN 12697-24, Bituminous mixtures Test methods for hot
35、 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 Test methods for hot mix asphalt Part 26: Stiffness EN 12697-27, Bituminous mixtures Test methods for hot mix asphalt Part 2
36、7: 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 12697-29, Bituminous mixtures Test methods for hot mix asphalt Part 29: Determination of the dimensions of a bituminous specimen
37、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 asphalt Part 31: Specimen preparation by gyratory compactor EN 12697-32, Bituminous mixtures Test methods for hot mix asphalt
38、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 compactor EN 12697-34, Bituminous mixtures Test methods for hot mix asphalt Part 34: Marshall test EN 12697-35, Bitumino
39、us 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 of a bituminous pavement EN 12697-37, Bituminous mixtures Test methods for hot mix asphalt Part 37: Hot sand test for the
40、adhesivity of binder on precoated chippings for HRA EN 12697-38, Bituminous mixtures Test methods for hot mix asphalt Part 38: Common equipment 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
41、methods for hot mix asphalt Part 40: In situ drainability EN 12697-41, Bituminous mixtures Test methods for hot mix asphalt Part 41: Resistance to de-icing fluids EN 12697-42, Bituminous mixtures Test methods for hot mix asphalt Part 42: Amount of coarse foreign matters in reclaimed asphalt EN 12697
42、-43, Bituminous mixtures Test methods for hot mix asphalt Part 43: Resistance to fuel EN 12697-44, Bituminous mixtures Test methods for hot mix asphalt Part 44: Crack propagation by semi-circular bending test EN 12697-45, Bituminous mixtures Test methods for hot mix asphalt Part 45: Saturation agein
43、g tensile stiffness (SATS) conditioning test BS EN 12697-24:2012EN 12697-24:2012 (E) 7 EN 12697-46, Bituminous mixtures Test methods for hot mix asphalt Part 46: Low temperature cracking and properties by uniaxial tension tests EN 12697-47, Bituminous mixtures Test methods for hot mix asphalt Part 4
44、7: Determination of the ash content of natural asphalts prEN 12697-48, Bituminous mixtures Test methods for hot mix asphalt Part 48: Inter-layer bond strength1)prEN 12697-49, Bituminous mixtures Test methods for hot mix asphalt Part 49: Skid resistance of asphalt in the laboratory1)prEN 12697-50, Bi
45、tuminous mixtures Test methods for hot mix asphalt Part 50: Scuffing resistance of surface course1)According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cy
46、prus, 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 the United Kingdom. 1)In preparation.BS EN 1269
47、7-24:2012EN 12697-24:2012 (E) 8 1 Scope This European Standard specifies the methods for characterising the fatigue of bituminous mixtures using alternative tests, including bending tests and direct and indirect tensile tests. The tests are performed on compacted bituminous material under a sinusoid
48、al loading or other controlled loading, using different types of specimens and supports. The procedure is used: a) to rank bituminous mixtures on the basis of resistance to fatigue; b) as a guide to relative performance in the pavement; c) to obtain data for estimating the structural behaviour of the road; and d) to judge test data according to specifications for bituminous mixtures. Because this European Standard does not impose a particular type of testing device, the precise choice of the test conditions depends on th
