1、BRITISH STANDARDBS EN 12274-7:2005Slurry surfacing Test methods Part 7: Shaking abrasion testThe European Standard EN 12274-7:2005 has the status of a British StandardICS 93.080.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36
2、g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Fri Jul 14 08:07:05 BST 2006, Uncontrolled Copy, (c) BSIBS EN 12274-7:2005This British Standard was published under the authority of the Standards Policy and Strategy Committeeon 28 April 200
3、6 BSI 2006ISBN 0 580 47273 6National forewordThis British Standard is the official English language version of EN 12274-7:2005. The UK participation in its preparation was entrusted by Technical Committee B/510, Road materials, to Subcommittee B/510/2, Surface dressings, sprays and slurry surfacings
4、, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate th
5、em in the UK.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “In
6、ternational Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a B
7、ritish Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Am
8、endments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Fri Jul 14 08:07:05 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12274-7May 2005ICS 93.080.20English VersionSlurry surfacing - Test methods - Part 7: Shaking abrasion testMatr
9、iaux bitumineux couls froid - Mthodes dessai -Partie 7 : Essai dabrasion par agitationDnne Asphaltschichten in Kaltbauweise - Prfverfahren -Teil 7: Schttel-AbriebprfungThis European Standard was approved by CEN on 17 April 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulation
10、s which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European S
11、tandard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national stan
12、dards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMIT
13、TEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12274-7:2005: ELicensed Copy: Wang Bin, na
14、, Fri Jul 14 08:07:05 BST 2006, Uncontrolled Copy, (c) BSIEN 12274-7:2005 (E) 2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3 Principle.4 4 Materials and equipment 4 5 Preparation for the test.8 5.1 Preparation of specimens 8 5.1.1 General 8 5.1.2 Grading curve for aggregates 8 5.1
15、.3 Binder content of the mix.8 5.2 Production of the mix .9 5.3 Production of test specimens 10 6 Test procedure 10 6.1 Determination of water absorption10 6.1.1 Water absorption test .10 6.1.2 Equations for water absorption test11 6.2 Determination of abrasion12 6.2.1 Abrasion test .12 6.2.2 Equati
16、on for abrasion test13 7 Record of results.13 Annex A (informative) Test record and report expression of results .14 Bibliography.15 Licensed Copy: Wang Bin, na, Fri Jul 14 08:07:05 BST 2006, Uncontrolled Copy, (c) BSIEN 12274-7:2005 (E) 3 Foreword This document (EN 12274-7:2005) has been prepared b
17、y 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 November 2005, and conflicting national standards shall
18、be withdrawn at the latest by December 2005. This document describes a test method for determining the suitability and compatibility of aggregates and emulsions for slurry surfacings. This European Standard is one of a series of standards as listed below: EN 12274-1, Slurry surfacing Test methods Pa
19、rt 1: Sampling for binder extraction. EN 12274-2, Slurry surfacing Test methods Part 2: 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
20、surfacing Test methods Part 5: Determination of wearing. EN 12274-6, Slurry surfacing Test methods Part 6: Rate of application. EN 12274-7, Slurry surfacing Test methods Part 7: Shaking abrasion test. prEN 12274-8, Slurry surfacing Test methods Part 8: Visual assessment. According to the CEN/CENELEC
21、 Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
22、Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Fri Jul 14 08:07:05 BST 2006, Uncontrolled Copy, (c) BSIEN 12274-7:2005 (E) 4 1 Scope This document specifies a test method for determining the suitability of aggreg
23、ates and cationic emulsions for slurry surfacings and, where appropriate, the effect of individual additives. This document applies to slurry surfacings. NOTE 1 The procedure uses a standardized mix composition but the method may also be used to assess the effect of variations in the grading and bin
24、der content but this use is not part of the standard. NOTE 2 Additives affecting the breaking behaviour may also be tested under standardised conditions. The test may also be used to study the effect of a particular type of bitumen or emulsifier. 2 Normative references The following referenced docum
25、ents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12697-6:2003, Bituminous mixtures Test methods for hot mix asphalt Part 6: D
26、etermination of bulk density of bituminous specimens 3 Principle The shaking abrasion test determines the water sensitivity of mixes for slurry surfacings consisting of 0/2 mm aggregate and cationic emulsion for slurry surfacing. The test measures the loss of material from standard specimens when cy
27、linders of compacted material are placed in water filled cylinders which are rotated end over end in a suitable device. The test uses mixtures for slurry surfacing using the materials to be used for producing slurry surfacing but made to a standard grading and binder content prepared at room tempera
28、ture. Four 25 mm high cylindrical specimens each with a diameter of 30 mm and prepared using a standardized mix for slurry surfacing are tested in each set of tests. The specimens are statically compacted and then conditioned by storage in water in a vacuum prior to testing. 4 Materials and equipmen
29、t 4.1 Plastic, glass or porcelain containers with capacities of approximately 0,5 l. 4.2 Stirring spatula (or metal fork). 4.3 Balance accurate to 0,1 g. 4.4 Warm air dryer. 4.5 Compaction moulds with bedplates (at least 4 are required for each test) (see Figure 1). 4.6 Compaction plugs, one for eac
30、h compaction mould (see Figure 2). 4.7 Funnel (see Figure 3). Licensed Copy: Wang Bin, na, Fri Jul 14 08:07:05 BST 2006, Uncontrolled Copy, (c) BSIEN 12274-7:2005 (E) 5 4.8 Press with a load range of 10 kN and an advance speed of 20 mm/min. 4.9 Shaking device (see Figure 4). 4.10 Shaking cylinders (
31、see Figure 5). 4.11 Vacuum desiccator 4.12 Vacuum gauge accurate to 0,1 kPa. 4.13 Chamois leather cloths NOTE Information on accuracy and calibration of equipment may be found in EN 12697-38. Dimensions in millimetres Key 1 Marking to show direction of filling 2 Compaction mould a Drilling, 30 b Con
32、ical widening from 30 to 31 3 Bed plate Figure 1 Compaction mould (tolerances 0,1) Licensed Copy: Wang Bin, na, Fri Jul 14 08:07:05 BST 2006, Uncontrolled Copy, (c) BSIEN 12274-7:2005 (E) 6 Dimensions in millimetres Figure 2 Compaction mould plug (tolerances 0,1) Dimensions in millimetres Figure 3 E
33、xample for a funnel for filling the mould (many other designs are suitable) (tolerances 0,1) Licensed Copy: Wang Bin, na, Fri Jul 14 08:07:05 BST 2006, Uncontrolled Copy, (c) BSIEN 12274-7:2005 (E) 7 Dimensions in millimetres Key 1 Axis of rotation Figure 4 General view of cylinder construction NOTE
34、 The cylinder will be replaced when the diameter has worn to 61,0 mm. Dimensions in millimetres Key 1 Rubber gasket Figure 5 Cylinder cap (tolerances 0,1) Licensed Copy: Wang Bin, na, Fri Jul 14 08:07:05 BST 2006, Uncontrolled Copy, (c) BSIEN 12274-7:2005 (E) 8 5 Preparation for the test 5.1 Prepara
35、tion of specimens 5.1.1 General The mixture under test shall be composed of 0/2 mm aggregate, emulsion for slurry surfacing, water, cement as additive and any other additions. 5.1.2 Grading curve for aggregates The standardized grading of the aggregates in Table 1 shall be used. Table 1 Grading curv
36、e Column 1 2 3 Line Lower size of aggregate fraction mm Upper size of aggregate fraction mm Mass of fraction used in the mixture % by mass 1 0 0,125 23 0,5 2 0,125 0,25 11 0,5 3 0,25 0,5 27 0,5 4 0,5 1,0 21 0,5 5 1,0 2,0 18 0,5 NOTE One part cement used in normal production (CEM I 32,5 R is commonly
37、 used) shall be added to 100 parts aggregate. 5.1.3 Binder content of the mix The binder content of the dry mixture depends on the density of the aggregate used. The binder content of the slurry surfacing after removal of the water shall be selected from Figure 6 (or calculated in accordance with Eq
38、uation (1). Licensed Copy: Wang Bin, na, Fri Jul 14 08:07:05 BST 2006, Uncontrolled Copy, (c) BSIEN 12274-7:2005 (E) 9 Key X B = binder content of the dry product, in percentage by mass (%) Y Density of the aggregate, in grams per cubic centimetre (g/cm3) 1 Example for aggregate 1 2 Example for aggr
39、egate 2 3 Example for aggregate 3 4 Example for aggregate 4 NOTE The aim is to ensure comparability of the results for different types of aggregate for identical volumetric ratios as otherwise the properties of the binder will affect those of the mix (especially with regard to affinity and swelling
40、properties). The diagram shows typical examples of common aggregates. B = 16,09 3,125 (1) where B is the binder content of the dry mixture as a proportion of the density of the dry aggregate, in percentage by mass (%); is the density of the aggregate, in grams per cubic centimetre (g/cm3). Figure 6
41、Determination of target binder content as a function of the density of the aggregates 5.2 Production of the mix The quantity of emulsion-bound 0/2 mix required for a series of four specimens shall be produced manually in a single operation. The materials used in the mix shall be the same as those in
42、tended for use on site. The quantities to be used for each set of four specimens are: (200 2) g of the dry aggregate prepared to the standard grading, magg; (2 0,1) g of cement, mcem; w g potable water, usually (40 0,5) % of the mass of dry aggregate; Licensed Copy: Wang Bin, na, Fri Jul 14 08:07:05
43、 BST 2006, Uncontrolled Copy, (c) BSIEN 12274-7:2005 (E) 10 An empirical value for the amount of water to be added to the mix is 40g. The amount is dependent on the type of emulsion used and shall be determined by preliminary testing. A mixture time of at least 2 min shall be measured. m g emulsion
44、for slurry surfacing in accordance with Equation (2): 100)100()(emulscemagg+=BBBmmm (2) where m is the mass of emulsion for slurry surfacing to be used, in grams (g); magg is the dry mass of aggregate in the mixture, in grams (g); mcem is the mass of cement in the mixture, in grams (g); B is the tar
45、get binder content of the dry product, in percentage by mass (%); Bemulsis the binder content of the emulsion for slurry surfacing, in percentage by mass (%). The materials shall be placed in the stirring vessel in the following order: Add the cement to the aggregate and mix; add the water and mix a
46、gain; add the bitumen emulsion and stir until the mixture is fully broken (speed of manual stirring: approximately 60 rev/min) at this stage the aggregate in the mixture is generally completely coated with binder and the water expelled from the mixture is clear. Partially coated single particles are
47、 acceptable. Any free water remaining in the mixing vessel shall be drained off. The fully broken mixture shall be granulated manually to obtain pieces with a diameter of less than approximately 5 mm. 5.3 Production of test specimens A series of four specimens shall be prepared, treated and tested a
48、t room temperature. The four compaction moulds and four bed plates shall be at room temperature. The height of each specimen shall be (25 1) mm. The mass of mixture required to provide the correct size of cylinder shall be determined by means of preliminary tests. The quantity of mixture required fo
49、r each specimen is placed in the compaction mould by means of the funnel. Preliminary compaction is achieved by lightly tapping the filled mould on the laboratory bench. The compaction plugs are then placed on the moulds and the mix compacted with the press, the advance speed of the compaction plug shall be (20 3) mm/min up to a maximum force of 10 kN. The final load of 10 kN shall be maintained for 1 min. The specimens are then demoulded and any burrs removed
