1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Bituminous mixtures - Test methodsPart 12: Determination of the water sensitivity of bituminous specimensBS EN 1269712:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12697-12 June 2018 ICS 93.080.20 Supersedes
2、 EN 12697-12:2008English Version Bituminous mixtures - Test methods - Part 12: Determination of the water sensitivity of bituminous specimens Mlanges bitumineux - Mthodes dessai - Partie 12: Dtermination de la sensibilit leau des prouvettes bitemineuses Asphalt - Prfverfahren - Teil 12: Bestimmung d
3、er Wasserempfindlichkeit von Asphalt-Probekrpern This European Standard was approved by CEN on 26 February 2018. 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 al
4、teration. Up-to-date lists and bibliographical 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 m
5、ade 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, Est
6、onia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE
7、 FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12697-12:2018 ENational fo
8、rewordThis British Standard is the UK implementation of EN 1269712:2018. It supersedes BS EN 1269712:2008, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/510/1, Asphalt products.A list of organizations represented on this committee can be obtained o
9、n request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 91780 6ICS 93.080.20Compliance with a Br
10、itish Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 1269712:2018EUROPEAN STANDARD NORM
11、E EUROPENNE EUROPISCHE NORM EN 12697-12 June 2018 ICS 93.080.20 Supersedes EN 12697-12:2008English Version Bituminous mixtures - Test methods - Part 12: Determination of the water sensitivity of bituminous specimens Mlanges bitumineux - Mthodes dessai - Partie 12: Dtermination de la sensibilit leau
12、des prouvettes bitemineuses Asphalt - Prfverfahren - Teil 12: Bestimmung der Wasserempfindlichkeit von Asphalt-Probekrpern This European Standard was approved by CEN on 26 February 2018. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givi
13、ng 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 the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three offi
14、cial 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
15、 Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia,
16、 Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved
17、worldwide for CEN national Members. Ref. No. EN 12697-12:2018 EBS EN 1269712:2018EN 12697-12:2018 (E) 2 Contents Page European foreword . 5 1 Scope 6 2 Normative references 6 3 Terms and definitions . 7 4 Principle . 7 5 Method A. 8 5.1 Apparatus . 8 5.1.1 Compression testing machine 8 5.1.2 Vacuum
18、system 8 5.1.3 Vacuum container . 8 5.1.4 Water bath . 8 5.1.5 Air chamber . 8 5.1.6 Other material 8 5.2 Specimen preparation . 8 5.2.1 Number of specimens 8 5.2.2 Dimensions of specimens . 8 5.2.3 Method of compaction . 9 5.2.4 Visual examination . 9 5.2.5 Measurement of dimensions . 9 5.2.6 Deter
19、mination of bulk density . 9 5.2.7 Division into subsets 9 5.2.8 Curing of specimens . 9 5.3 Conditioning 9 5.3.1 Dry specimens 9 5.3.2 Wet specimens . 9 BS EN 1269712:2018EN 12697-12:2018 (E) 3 5.4 Test procedure 10 6 Method B 11 6.1 Apparatus 11 6.1.1 Compression testing machine 11 6.1.2 Measuring
20、 device 12 6.1.3 Vacuum system 12 6.1.4 Vacuum container 12 6.1.5 Water bath . 12 6.1.6 Air chamber 12 6.1.7 Other material . 12 6.2 Specimen preparation 13 6.2.1 Number of specimens 13 6.2.2 Dimensions of specimens 13 6.2.3 Method of compaction. 13 6.2.4 Visual examination 13 6.2.5 Measurement of d
21、imensions 13 6.2.6 Determination of bulk density . 14 6.2.7 Division into subsets . 14 6.2.8 Curing of specimens . 14 6.3 Conditioning . 14 6.3.1 Dry specimens 14 6.3.2 Wet specimens . 14 6.4 Test procedure 14 7 Method C 15 7.1 Apparatus 15 7.1.1 Graduated glass beaker 15 7.1.2 Rubber plug 15 7.1.3
22、Filtering paper . 15 BS EN 1269712:2018EN 12697-12:2018 (E) 4 7.1.4 Collecting container 15 7.1.5 Balance . 15 7.1.6 Container for drying the filtering paper 15 7.1.7 Heating chamber 15 7.2 Specimen preparation 15 7.3 Test procedure 15 8 Calculation 16 8.1 Volume of cylindrical specimens 16 8.2 Indi
23、rect tensile strength ratio (Method A) 16 8.3 Compressive strength ratio (Method B) 17 8.4 Bonding value (Method C) . 17 9 Test report 17 9.1 Method A 17 9.2 Method B 18 9.3 Method C 18 10 Precision 18 10.1 Method A 18 10.2 Method B 19 10.3 Method C 19 Bibliography . 20 BS EN 1269712:2018EN 12697-12
24、:2018 (E) 5 European foreword This document (EN 12697-12:2018) 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 endo
25、rsement, at the latest by December 2018, and conflicting national standards shall be withdrawn at the latest by December 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN not be held responsible for identifying any or all
26、such patent rights. This document supersedes EN 12697-12:2008. Compared with EN 12697-12:2008, the following changes have been made: the series title no longer makes the method exclusively for hot mix asphalt Title; the structure of the standard has been altered, describing each method separately; d
27、escription of Method A and Method B giving the same result deleted 1; restriction for slenderness, less than 0,5, of specimen for Method B deleted 1. Added in 6.2.5 as requirement; EN 12697-5 and EN 12697-7 added. EN 1246 and EN 13108-1 deleted 2; introduction of option for compaction with EN 12697-
28、30 (2x50 blows) 5.2.3 b; tolerance changed for conditioning at 40 C from 1 C to 2 C 5.3.2 b); description added of procedure for determining specimen volume, used for calculation of degree of swelling 5.3.2 e; changed conditioning temperature for soft grade bitumen 5.3.2 f; introduction of table wit
29、h recommended test temperatures for Method A, depending on binder grade 5.4, Table 1; description and requirements for compression testing machine and measuring device added for 6.1; modification of tolerance for the constant load. Introduction of Table 2 with Static compaction parameters 6.2.3. Acc
30、ording 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, German
31、y, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1269712:2018EN 12697-12:2018 (E) 6 1 Scope This European Standard specifies
32、three test methods for determining the effect of saturation and accelerated water conditioning: method A uses the indirect tensile strength of cylindrical specimens of bituminous mixtures; method B uses the compression strength of cylindrical specimens of bituminous mixtures; method C defines the bo
33、nding value for a bituminous mixture 1 h after mixing, where the bonding of bitumen and aggregate can be equated to a bonding value. Method C is suitable for soft asphalt with bitumen of kinematic viscosity at 60 C of 4 000 mm2/s or less. These methods can be used to evaluate the effect of water on
34、asphalt mixtures with or without anti-stripping additives including liquids, such as amines; and fillers, such as hydrated lime or cement. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For d
35、ated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12697-5, Bituminous mixtures Test methods for hot mix asphalt Part 5: Determination of the maximum density EN 12697-6, Bituminous mixtures Tes
36、t 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 bituminous specimens by gamma rays EN 12697-8, Bituminous mixtures Test methods for hot mix asphalt Pa
37、rt 8: Determination of void characteristics of bituminous specimens EN 12697-23, Bituminous mixtures Test methods for hot mix asphalt Part 23: Determination of the indirect tensile strength of bituminous specimens EN 12697-27, Bituminous mixtures Test methods Part 27: Sampling EN 12697-29, Bituminou
38、s 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 asphalt Part 31:
39、Specimen preparation by gyratory compactor EN 12697-32, Bituminous mixtures Test methods Part 32: Laboratory compaction of bituminous mixtures by vibratory compactor EN 12697-33, Bituminous mixtures Test methods Part 33: Specimen prepared by roller compactor. BS EN 1269712:2018EN 12697-12:2018 (E) 7
40、 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 slenderness height of a specimen divided by its diameter 3.2 indirect tensile strength ITS maximum tensile stress according to EN 12697-23, calculated from the peak load applied to a cylindrica
41、l specimen loaded diametrically until break at specified test conditions 3.3 indirect tensile strength ratio ITSR ratio of the indirect tensile strength of wet (water conditioned) specimens to that of dry specimens, expressed in percent 3.4 compressive strength ratio i/C ratio of the strength of a s
42、pecimen loaded in compression at the specified test temperature and speed of displacement of the press, of wet (water conditioned) specimens to that of dry specimens expressed in percent 3.5 water sensitivity in accordance with method A ITSR value obtained on compacted specimens of a bituminous mixt
43、ure 3.6 water sensitivity in accordance with method B i/C value obtained on compacted specimens of a bituminous mixture 3.7 bonding value amount of aggregate fines and bitumen which comes loose from 1 000 g sample of bituminous mixture when mixed with 1 500 ml of water in a graduated glass beaker 4
44、Principle Method A: Method A uses the indirect tensile strength of cylindrical specimens of bituminous mixtures. A set of cylindrical test specimens is divided into two equally sized subsets and conditioned. One subset is maintained dry at room temperature while the other subset is saturated and sto
45、red in water at elevated conditioning temperature. After conditioning, the indirect tensile strength of each of the two subsets is determined at a defined test temperature, depending on the grade of bitumen. The ratio of the indirect tensile strength of the water conditioned subset compared to that
46、of the dry subset is determined and expressed in percent. Method B: Method B uses the compression strength of cylindrical specimens of bituminous mixtures. A set of cylindrical test specimens is divided into two equally sized subsets and conditioned. One subset is maintained at 50 % humidity while t
47、he other subset is saturated and stored in water. After conditioning, the compression strength of each of the two subsets is determined at 18 C. The ratio of the compression strength of the water conditioned subset compared to that of the dry subset is determined and expressed in percent. BS EN 1269
48、712:2018EN 12697-12:2018 (E) 8 Method C: A sample of bituminous mixture and water is mixed. The amount of material that comes loose is measured by filtering. The bonding value is the amount of dried aggregate fines and bitumen left on the filtering paper measured in grams. 5 Method A 5.1 Apparatus 5
49、.1.1 Compression testing machine Compression testing machine and testing head with loading strips, according to EN 12697-23. 5.1.2 Vacuum system Vacuum system (pump, gauge etc.), capable of obtaining a residual pressure of (6,7 0,3) kPa within (10 1) min and able of maintaining the vacuum for (30 5) min. 5.1.3 Vacuum container Vacuum container, with a perforated shelf, placed above the bottom. 5.1.4 Water bath Thermostatically contro
