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1、BRITISH STANDARD BS EN 12274-5:2003 Slurry surfacing Test method Part 5: Determination of wearing The European Standard EN 12274-5:2003 has the status of a British Standard ICS 93.080.20 ? Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS E
2、N 12274-5:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 21 May 2003 BSI 21 May 2003 ISBN 0 580 41903 7 National foreword This British Standard is the official English language version of EN 12274-5:2003. The UK participation in its pre
3、paration was entrusted by Technical Committee B/510, Road materials, to Subcommittee B/510/2, Surface dressing, sprays and slurry surfacing, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The Bri
4、tish 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 British Standards On
5、line. 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. aid enquirers to understand the text; present to the respons
6、ible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover
7、, the EN title page, pages 2 to 13 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled C
8、opy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12274-5 January 2003 ICS 93.080.20 English version Slurry surfacing - Test method - Part 5: Determination of wearing Matriaux bitumineux couls froid - Mthode dessai - Partie 5: Dtermination de lusure Dnne Asphaltschicht in Kaltbauweis
9、e - Prfverfahren - Teil 5: Bestimmung des Verschleies This European Standard was approved by CEN on 21 November 2002. 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 a
10、ny alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the 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
11、translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Icelan
12、d, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights
13、 of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12274-5:2003 E Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12274-5:2003 (E) 2 Contents page Foreword3 1Scope 3 2Normative reference
14、s 4 3Terms and definitions4 4Principle4 5Materials5 6Apparatus .5 7Preparation of sample .9 8Test procedure.10 9Expression of results 11 10Test report 12 Bibliography13 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12274-5:2003 (E) 3 Fo
15、reword This document (EN 12274-5:2003) 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 b
16、y July 2003, and conflicting national standards shall be withdrawn at the latest by April 2005. This European Standard is one of a series of standards as listed below: EN 12274-1, Slurry surfacing Test methods Part 1: Sampling for binder extraction. EN 12274-2, Slurry surfacing Test methods Part 2:
17、Determination of residual binder content. EN 12274-3, Slurry surfacing Test methods Part 3: Consistency. EN 12274-4, Slurry surfacing Test methods Part 4: Determination of cohesion of the mix. EN 12274-5, Slurry surfacing Test methods Part 5: Determination of wearing. EN 12274-6, Slurry surfacing Te
18、st methods Part 6: Rate of application. EN 12274-71, Slurry surfacing Test methods Part 7: Shaking abrasion test in suitability of mineral aggregates to slurry mixes. EN 12274-81, Slurry surfacing Test methods Part 8: Visual assessment. According to the CEN/CENELEC Internal Regulations, the national
19、 standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
20、 the United Kingdom. 1 Scope This European Standard specifies a test method for the design of slurry mix based on the determination of the minimum binder content of the mix under wet track abrasion conditions. This European Standard applies to slurry surfacing to be used in surface layers. NOTEFor s
21、ome course mixtures the precision is poor due to loss of aggregates comes up, a comment will be made in the report. 1 In preparation. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12274-5:2003 (E) 4 2 Normative references This European
22、Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications app
23、ly to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 12274-3, Slurry surfacing Test method Part 3: Consistency. ISO 48, Rubber, vulcanized or thermoplastic Deter
24、mination of hardness (Hardness between 10 IRHD and 100 IRHD). 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 set end of the non-reversible process when the emulsion coalescence takes place NOTE 1The coalescence of an emulsion is the
25、 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 2After the set of a slurry surfacing: it is not possible to stir the mixture; free emulsion during washing with water can
26、not be observed; an absorbent paper is not stained when pressed slightly onto the surface of the slurry. 3.2 set time time elapsed between placing a slurry surfacing and its setting 3.3 quick setting slurry slurry with a set time less than or equal to 30 min 3.4 slow setting slurry slurry with a set
27、 time more than 30 min 4 Principle Samples are prepared with different binder contents. 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 rubbi
28、ng pressure, applied for 5 min, on the surface of a test sample of slurry previously prepared, cured in an oven, and moistened by immersion. By using this procedure, the minimum amount of emulsion to withstand the abrasive action of traffic is determined. Licensed Copy: sheffieldun sheffieldun, na,
29、Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12274-5:2003 (E) 5 5 Materials 5.1 Coarse aggregates and sand A sufficient amount of the separated aggregates to be used in the slurry shall be dried in an oven at (100 5) C to reach constant mass. NOTEConstant mass is deemed to be ac
30、hieved when the difference between successive weighings at 30 min intervals does not exceed 0,1 % of the mass. 5.2 Reactive filler The filler, e.g. cement or hydrated lime, shall be dried in an oven at (110 5) C to reach constant mass. NOTEConstant mass is deemed to be achieved when the difference b
31、etween successive weighings at 30 min intervals does not exceed 0,1 % of the mass. 5.3 Emulsion The emulsion shall be manually homogenized using a glass rod. 6 Apparatus 6.1 Apparatus used for preparation of samples 6.1.1 Drying oven, with a forced air system and a minimum capacity of 80 l capable o
32、f maintaining a temperature of (60 5) C in the vicinity of the test sample. 6.1.2 Oven, thermostatically controlled to maintain a temperature of (110 5) C. 6.1.3 Climatic chamber, capable of maintaining a temperature of (5 3) C in the vicinity of the test sample and a humidity of (60 10) %. 6.1.4 Ba
33、lance, accurate to 0,1 g. 6.1.5 Timing device, accurate to 1 s. 6.1.6 Ring-shaped, annular metal moulds, with an internal diameter of (279,0 0,5) mm and an external diameter of (295,0 0,5) mm. The heights of these moulds shall be as follows: Type A(6,3 0,5) mm; Type B(10,0 0,5) mm; Type C(13,0 0,5)
34、mm; Type D(19,0 0,5) mm. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12274-5:2003 (E) 6 6.1.7 Ladles or beakers, of 1 l, 2 l and 5 l capacity. 6.1.8 End-rounded spatula, or metal rod. 6.1.9 Levelling plate, with a straight edge, chamf
35、ered to a sharp edge on one of its faces and having a handle. 6.1.10 Test piece bases, made of unchipped roofing felt, of at least 300 mm diameter and weighing (700 70) g/m. 6.2 Apparatus used for testing 6.2.1 Abrasion machine, consisting of an electric motor capable of driving a planetary gear sys
36、tem which rotates its vertically-mounted abrasion head about its own axis, as well as providing a planetary motion applied directly to the test sample. NOTEThe machine is designed to provide the abrasive head with a rotating speed of about 144 min-1 for 61 complete cycles of the planetary system whi
37、le exerting a constant vertical kinetic-friction force of (22,3 2,0) N. 6.2.2 Test bath, of sufficient volume to keep the test sample submerged for the duration of the test. The bottom of the bath shall be fitted with three spindles designed to fix the test base plate in place. 6.2.3 Test base plate
38、, comprising a thick metal disc diameter (310 1) mm and thickness (5,0 0,2) mm. The disc shall have at least three knurled head screw fasteners arranged symmetrically on the baseplate periphery, in order to secure the sample during the test. 6.2.4 Installation of the abrasion machine The test base p
39、late shall be fixed by means of dowels to the test bath bottom. The abrasion machine and the test bath should be firmly fixed together by means of an appropriate device throughout the test. 6.2.5 Auxiliary bath, capable of storing the test samples at (25 2) C before testing. 6.2.6 Abrasion head, fit
40、ted with a piece of hose (127 1) mm made of 80 Shore hardness rubber conforming to ISO 48 and reinforced with a double cord surface. The hose shall have an internal diameter of (19 0,5) mm and an external diameter of about 31 mm and shall be capable of withstanding a pressure of 2,533 MPa (standard
41、atmosphere). NOTE 1A drawing of the abrasion head is given in Figure 1. NOTE 2An example of an apparatus is shown in Figure 2. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12274-5:2003 (E) 7 Dimensions in millimetres Key 1Counterweight
42、 2Bridle 3Base 4Hose NOTETolerances for the dimensions: 1 % Figure 1 Abrasion head, mass of the four parts 2 300 g Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12274-5:2003 (E) 8 Figure 2 Example of apparatus Licensed Copy: sheffieldun
43、 sheffieldun, na, Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12274-5:2003 (E) 9 7 Preparation of sample 7.1 Conditioning temperature All materials that are going to be used in sample preparation shall remain for at least 2 h before testing at a temperature given in Table 1. Ta
44、ble 1 Conditioning temperature Slurry typeConditioning temperature C Slow setting slurryAmbient temperature Quick setting slurry5 3 7.2 Water content The proportion of water shall be previously determined according to EN 12274-3. 7.3 Aggregates and filler Weigh aggregates and filler in the same prop
45、ortions as the design mix in accordance with the amount in Table 2 using a ladle or beaker and mix with a spatula until a homogeneous mixture is obtained. Table 2 Sample size Maximum aggregate size mm Amount of aggregates and filler g 4,0 5,6 6,3 8,0 1 500 10 10,0 11,2 16,0 3 000 10 7.4 Water and ad
46、ditive Add water and additive (if necessary), and stir the mixture until all the aggregates and filler are completely wetted. The calcium carbonate content of the water shall be less than 250 ppm. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 11:55:45 GMT+00:00 2006, Uncontrolled Copy, (c)
47、BSI EN 12274-5:2003 (E) 10 7.5 Emulsion Add emulsion in an amount as required in the design mix to the mixture and stir it for (45 1) s using a spatula or metal rod until a homogeneous mixture is obtained. NOTEA mechanical mixer may be used. However care should be taken to ensure that no component i
48、s ejected from the mixing containers during the mixing process. 7.6 Sample size The annular moulds shall be those corresponding to the maximum size of the aggregate in accordance with Table 3. Table 3 Mould type Maximum aggregate size mm Mould size 4,0 5,6 A 6,3 8,0 B 10,0 11,2 C 16,0D NOTEThe mould
49、 used should be the smallest whose height exceeds the maximum size of the aggregate by at least 15 %. Centre the mould over the felt supports and pour the slurry into the mould. Spread the sample and level to a flat face. During this operation, the handling of the slurry shall be minimized to avoid segregation. 7.7 Curing The moulds containing the specimen, together with the test base plate