1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Slurry surfacing - Test methodPart 5: Determination of the minimum binder content and wearing resistanceBS EN 122745:2018National forewordThis British Standard is the UK implementation of EN 122745:2018. It supersedes B
2、S EN 122745:2003, which is withdrawn.BSI, as a member of CEN, is obliged to publish EN 122745:2018 as a British Standard. Attention is drawn to the fact that during the development of this European Standard , the UK committee voted against its approval.The main concern related to Clause 6.2, item 6)
3、: 80 Shore hardness rubber specified in EN 122745:2003 for the hose on the abrasion head changed to (85 5) IRHD hardness rubber. Shore readings (A) are usually a few degrees higher than IRHD and so, the committee considered that this conversion is not acceptable, because it suggests that the rubber
4、changes effectively from firm to hard. Prior to the publication of EN 122745:2003, the British Standard method in BS 4342:1984 specified the rubber hardness to be 6675 IRHD. This meant that laboratories complying with the new European Standard used a slightly harder rubber. Test results to the EN st
5、andard are different, possibly due in part to rubber hardness. All of the results of test to the EN Standard relate to the new grade of rubber. Therefore, the committee considered that, although supporting the IRHD system, it was desirable that the rubber should continue to have a similar hardness.
6、CEN/CCMC accepted the proposal of WG2 subsequently, so that the requirement is consistent with the available rubber hose, as specified in the previous standard.There was also concern that the specified dimensions of the abrasion head in Figure 2 are not necessarily compatible with the specified mass
7、 of the complete abrasion head (all parts including bridles and screws) and that the dimensions of the counterweight should be approximate only.The UK participation in its preparation was entrusted to Technical Committee B/510/2, Surface treatments.A list of organizations represented on this committ
8、ee can be obtained on 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 93560 2ICS 93.080.20
9、Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2018.Amendments/corrigenda issued since publicationBRITISH STANDARDBS EN 122745:2018Date Text affectedBR
10、ITISH STANDARD BS EN 122745:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12274-5 March 2018 ICS 93.080.20 Supersedes EN 12274-5:2003English Version Slurry surfacing - Test method - Part 5: Determination of the minimum binder content and wearing resistance Matriaux bitumineux couls froid
11、- Mthode dessai - Partie 5: Dtermination de la teneur minimum en liant et de la rsistance lusure Dnne Asphaltdeckschichten in Kaltbauweise - Prfverfahren - Teil 5: Bestimmung des Mindestbindemittelgehaltes und des Verschleies von Bitumenschlmmen This European Standard was approved by CEN on 13 Novem
12、ber 2017. 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 bibliographical references concerning such national standards may be obt
13、ained 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 responsibility of a CEN member into its own language and notified to the C
14、EN-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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Irelan
15、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Manageme
16、nt 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 12274-5:2018 EEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12274-5 March 2018 ICS 93.080.20 Supersedes EN 12274-5:2003Eng
17、lish Version Slurry surfacing - Test method - Part 5: Determination of the minimum binder content and wearing resistance Matriaux bitumineux couls froid - Mthode dessai - Partie 5: Dtermination de la teneur minimum en liant et de la rsistance lusure Dnne Asphaltdeckschichten in Kaltbauweise - Prfver
18、fahren - Teil 5: Bestimmung des Mindestbindemittelgehaltes und des Verschleies von Bitumenschlmmen This European Standard was approved by CEN on 13 November 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standar
19、d 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 official versions (English,
20、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, Bulga
21、ria, 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, Spain, Sweden, Switzerl
22、and, 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 worldwide for CEN nation
23、al Members. Ref. No. EN 12274-5:2018 EBS EN 122745:2018EN 12274-5:2018 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Principle . 4 5 Materials . 5 5.1 Coarse aggregates and fine aggregates . 5 5.2 Reactive filler 5 5.3 Emulsion . 5 6 Appar
24、atus . 5 6.1 Apparatus used for preparation of samples 5 6.2 Apparatus used for testing. 6 7 Preparation of sample . 9 7.1 Conditioning temperature . 9 7.2 Water addition 10 7.3 Aggregates and reactive filler 10 7.4 Water and additive 10 7.5 Emulsion 10 7.6 Sample size . 10 7.7 Curing . 11 8 Test pr
25、ocedure 11 9 Expression of results . 12 9.1 Test sample mass . 12 9.2 Conversion factor . 12 9.3 Test result . 12 10 Test report 12 11 Precision 12 Annex A (informative) Minimum amount of emulsion for slurry surfacing with a given aggregate composition to withstand the abrasive action of traffic . 1
26、3 Annex B (informative) Resistance to wear of the mix at early stage under different traffic and climatic conditions 14 B.1 General . 14 B.2 Curing . 14 B.3 Test procedure for determining the resistance to wear 14 BS EN 122745:2018EN 12274-5:2018 (E) 3 European foreword This document (EN 12274-5:201
27、8) 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 September 2018, and conflicting na
28、tional standards shall be withdrawn at the latest by September 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1227
29、4-5:2003. Compared with EN 12274-5:2003, the following changes have been made: a) In 6.1 the humidity is reduced from 100 % to 60 %; b) In 6.2 the Abrasion machine is defined in terms of rotating speed and force applied. This European Standard is one of a series of standards as listed below: EN 1227
30、4-1, Slurry surfacing Test methods Part 1: Sampling of slurry surfacing mixture; EN 12274-2, Slurry surfacing Test methods Part 2: Determination of residual binder content including preparation of samples; EN 12274-3, Slurry surfacing Test methods Part 3: Consistency; EN 12274-4, Slurry surfacing Te
31、st methods Part 4: Determination of cohesion of the mix; EN 12274-5, Slurry surfacing Test methods Part 5: Determination of the minimum binder content and wearing resistance; EN 12274-6, Slurry surfacing Test methods Part 6: Rate of application; EN 12274-7, Slurry surfacing Test methods Part 7: Shak
32、ing abrasion test; EN 12274-8, Slurry surfacing Test methods Part 8: Visual assessment of defects. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cy
33、prus, 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, Spain, Sweden, Switzerland, Turkey and
34、the United Kingdom. BS EN 122745:2018EN 12274-5:2018 (E) 4 1 Scope This European Standard specifies a test method for the design of slurry surfacing mixture based on the determination of the minimum binder content of the mixture and the resistance to wear under wet track abrasion conditions for the
35、purpose to support the mixture design. This test can be used for quality control purposes. 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.
36、 For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1097-5, Tests for mechanical and physical properties of aggregates - Part 5: Determination of the water content by drying in a ventilated oven ISO 48, Rubber, vulcanized or thermoplastic Det
37、ermination of hardness (hardness between 10 IRHD and 100 IRHD) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 set end of the non-reversible process when the emulsion coalescence takes place Note 1 to entry: The coalescence of an emulsion is
38、the non-reversible phase starting from the beginning of the breaking of the emulsion to the total setting when the bitumen emulsion reverts to bitumen in presence of a mineral. Note 2 to entry: After the set of a slurry surfacing: it is not possible to stir the mixture; free emulsion during washing
39、with water cannot be observed and an absorbent paper is not stained when pressed slightly onto the surface of the slurry surfacing. 3.2 set time time elapsed between placing a slurry surfacing and its setting 3.3 quick setting slurry surfacing slurry with a set time less than or equal to 30 min 3.4
40、slow setting slurry surfacing slurry with a set time more than 30 min 4 Principle The samples are tested under water, after which the mass-loss by abrasion is measured. The test consists of an abrasive action operated by means of a hard rubber cylinder which exerts a planetary side gear rubbing pres
41、sure, applied for 5 min, on the surface of a test sample of slurry previously prepared, cured in an oven, and moistened by immersion. BS EN 122745:2018EN 12274-5:2018 (E) 5 This test method can be used with different curing conditions in the design process for the determination of: minimum amount of
42、 emulsion for slurry surfacing with a given aggregate composition to withstand the abrasive action of traffic (Annex A); resistance to wear of the mix at early stage under different traffic and climatic conditions (Annex B). 5 Materials 5.1 Coarse aggregates and fine aggregates A sufficient amount o
43、f the separated aggregates to be used in the slurry shall be dried in an oven at (110 5) C to reach constant mass, according to EN 1097-5. Wet aggregates may be used, preferably at their own natural moisture. In case of natural moisture, water content W is determined by drying in an oven at a temper
44、ature of (110 5) C until constant mass is achieved, according to EN 1097-5. 5.2 Reactive filler The reactive filler, e.g. cement or hydrated lime, shall be dried in an oven at (110 5) C to reach constant mass, according to EN 1097-5. 5.3 Emulsion The emulsion shall be manually homogenized by stirrin
45、g intensively with a metal spatula. 6 Apparatus 6.1 Apparatus used for preparation of samples 1) Drying oven, with a forced air system and a minimum capacity of 80 L capable of maintaining a temperature of (60 5) C. 2) Oven, thermostatically controlled to maintain a temperature of (110 5) C. 3) Clim
46、atic chamber, capable of maintaining a temperature of (5 1) C and a humidity of (60 10) %. See Clause 8 and Annex A and B. 4) Balance, accurate to 0,1 g. 5) Timing device, accurate to 1 s. 6) Ring-shaped annular metal moulds, with an internal diameter of (279,0 0,5) mm and external diameter of (295,
47、0 0,5) mm. The heights of these moulds shall be as follows: Type A (6,3 0,5) mm; Type A1 (8,0 0,5) mm; Type B (10,0 0,5) mm; Type C (13,0 0,5) mm; Type D (19,0 0,5) mm. BS EN 122745:2018EN 12274-5:2018 (E) 6 7) Ladles or beakers of 1 L, 2 L and 5 L capacity. 8) End-rounded spatula or metal rod. 9) L
48、evelling plate with a straight edge, chamfered to a sharp edge on one of its faces and having a handle. 10) Test piece bases made of unchipped roofing felt, of at least 300 mm diameter and weighing minimum (700 100) g/m2. 6.2 Apparatus used for testing 1) Abrasion machine, consisting of an electric
49、motor capable of driving a planetary gear system which rotates its vertically-mounted abrasion head about its own axis, as well as providing a planetary motion applied directly to the test sample. The machine is designed to provide the abrasive head with a rotating speed of about 144 min1for 61 complete cycles per minute of the planetary system while exerting a constant vertical kinetic-friction force of (22,3 2,0) N, correspo
