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、g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 12274-7:2005This British Standard was published under the authority of the Standards Policy and Strategy Committeeon 28 April 2006 BSI 2006ISBN 0 580 47273 6National forewordThis British Standard is the official En
3、glish 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, which has the responsibility to: aid enquirers to understand the text; present to t
4、he 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 them in the UK.A list of organizations represented on this subcommittee can be obtained
5、 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 “International Standards Correspondence Index”, or by using the “Search” facility of the
6、 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 British Standard does not of itself confer immunity from legal obligations.Summary of
7、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.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPEN
8、NEEUROPISCHE NORMEN 12274-7May 2005ICS 93.080.20English VersionSlurry surfacing - Test methods - Part 7: Shaking abrasion testMatriaux bitumineux couls froid - Mthodes dessai -Partie 7 : Essai dabrasion par agitationDnne Asphaltschichten in Kaltbauweise - Prfverfahren -Teil 7: Schttel-AbriebprfungTh
9、is European Standard was approved by CEN on 17 April 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical reference
10、s concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard 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
11、own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembou
12、rg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitat
13、ion in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12274-7:2005: EEN 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 Gener
14、al 8 5.1.2 Grading curve for aggregates 8 5.1.3 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 ab
15、rasion12 6.2.1 Abrasion test .12 6.2.2 Equation for abrasion test13 7 Record of results.13 Annex A (informative) Test record and report expression of results .14 Bibliography.15 EN 12274-7:2005 (E) 3 Foreword This document (EN 12274-7:2005) has been prepared by Technical Committee CEN/TC 227 “Road m
16、aterials”, 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 be withdrawn at the latest by December 2
17、005. 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 Part 1: Sampling for binder extraction. EN
18、 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 surfacing Test methods Part 5: Determina
19、tion 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 Internal Regulations, the national stan
20、dards 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, Netherlands, Norway, Poland, Portugal, S
21、lovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 12274-7:2005 (E) 4 1 Scope This document specifies a test method for determining the suitability of aggregates and cationic emulsions for slurry surfacings and, where appropriate, the effect of individual additives. This document a
22、pplies 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 binder content but this use is not part of the standard. NOTE 2 Additives affecting the breaking behaviour may also be tested un
23、der 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 documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undate
24、d 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: Determination of bulk density of bituminous specimens 3 Principle The shaking abrasion test determines the water sensitivity o
25、f 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 cylinders of compacted material are placed in water filled cylinders which are rotated end over end in a suitable device. The t
26、est 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 temperature. Four 25 mm high cylindrical specimens each with a diameter of 30 mm and prepared using a standardized mix for slurry su
27、rfacing 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 equipment 4.1 Plastic, glass or porcelain containers with capacities of approximately 0,5 l. 4.2 Stirring spatula (or metal fork). 4.
28、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 each compaction mould (see Figure 2). 4.7 Funnel (see Figure 3). EN 12274-7:2005 (E) 5 4.8 Press with a load range of 10 kN and
29、an advance speed of 20 mm/min. 4.9 Shaking device (see Figure 4). 4.10 Shaking cylinders (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 mill
30、imetres Key 1 Marking to show direction of filling 2 Compaction mould a Drilling, 30 b Conical widening from 30 to 31 3 Bed plate Figure 1 Compaction mould (tolerances 0,1) EN 12274-7:2005 (E) 6 Dimensions in millimetres Figure 2 Compaction mould plug (tolerances 0,1) Dimensions in millimetres Figur
31、e 3 Example for a funnel for filling the mould (many other designs are suitable) (tolerances 0,1) EN 12274-7:2005 (E) 7 Dimensions in millimetres Key 1 Axis of rotation Figure 4 General view of cylinder construction NOTE The cylinder will be replaced when the diameter has worn to 61,0 mm. Dimensions
32、 in millimetres Key 1 Rubber gasket Figure 5 Cylinder cap (tolerances 0,1) EN 12274-7:2005 (E) 8 5 Preparation for the test 5.1 Preparation 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
33、additions. 5.1.2 Grading curve for aggregates The standardized grading of the aggregates in Table 1 shall be used. Table 1 Grading curve 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
34、,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 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
35、 binder content of the slurry surfacing after removal of the water shall be selected from Figure 6 (or calculated in accordance with Equation (1). EN 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
36、/cm3) 1 Example for aggregate 1 2 Example for aggregate 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
37、 (especially with regard to affinity and swelling 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
38、, in grams per cubic centimetre (g/cm3). Figure 6 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 mater
39、ials used in the mix shall be the same as those intended 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
40、; EN 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 for slurry surfacing in accordance
41、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 target binder content of the dry produ
42、ct, 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 again; add the bitumen emulsion and
43、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 acceptable. Any free water remaini
44、ng 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 at room temperature. The four compac
45、tion 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 for each specimen is placed in the co
46、mpaction 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 maxi
47、mum 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 (fine sandpaper has been found suitable for this purpose). 6 Test procedure 6.1 Determination of water absorption 6.1.1 Water absorption test The four test specimens shal
48、l be weighed in air and water in accordance with EN 12697-6:2003, method B, except that: EN 12274-7:2005 (E) 11 the density shall be corrected, if the temperature of the water bath is different from 25 C by more than 2 C; a chamois leather cloth shall be used to dry the specimen. The four test speci
49、mens shall then be placed in water with a temperature of approximately 1 C (iced water) in the vacuum desiccator. The pressure shall be steadily and continuously reduced to (3 0,1) kPa absolute over a period of about 30 min without any sudden reductions in pressure. This pressure shall be maintained for a further period of (150 5) min. The pressure shall be increased to atmospheric in approximately 1 min and the specimens shall be immersed in water f
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