SIST EN 12272-3:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.H]LYQRVWLSORãþROberflächenbehandlung - Prüfverfahren - Teil 3: Bestimmung des Adhäsionsvermögens von Bindemittel und Gesteinskörnuung mit dem SchlagprüfverfahrenEnduits superficiels - Méthode d'essai - Partie 3: Détermination de l'adhésivité liants-granulats par l'essai a la plaque VialitSurface dressing - Test methods - Part 3: Determination of binder aggregate adhesivity by the Vialit plate shock test method93.080.20Materiali za gradnjo cestRoad construction materialsICS:Ta slovenski standard je istoveten z:EN 12272-3:2003SIST EN 12272-3:2004en01-junij-2004SIST EN 12272-3:2004SLOVENSKI
STANDARD



SIST EN 12272-3:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12272-3January 2003ICS 93.080.20English versionSurface dressing - Test method - Part 3: Determination of binderaggregate adhesivity by the Vialit plate shock test methodEnduits superficiels - Méthode d'essai - Partie 3:Détermination de l'adhésivité liants-granulats par mesurede la cohésion VialitOberflächenbehandlung - Prüfverfahren - Teil 3:Bestimmung des Adhäsionsvermögens von Bindemittelnund Gesteinskörnung mit dem SchlagprüfverfahrenThis 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 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 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12272-3:2003 ESIST EN 12272-3:2004



EN 12272-3:2003 (E)2ContentspageForeword.3Introduction.41Scope.42Normative references.43Terms and definitions.54Active adhesivity and mechanical adhesion.55Wetting temperature.106Fragility temperature.12Annex A (informative)
Summary of the preparation of the plates before testing.14Annex B (informative)
Tables of results.16Annex C (informative)
Measures of the fragility temperature.19Annex D (informative)
Purpose of the Vialit plate shock test.20SIST EN 12272-3:2004



EN 12272-3:2003 (E)3ForewordThis document (EN 12272-3:2003) has been prepared by Technical Committee CEN/TC 227 "Road materials", thesecretariat 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 orby endorsement, at the latest by July 2003, and conflicting national standards shall be withdrawn at the latest byApril 2005.This European Standard is one of a series of standards as listed below:EN 12272-1, Surface dressing — Test method — Part 1: Rate of spread and accuracy of spread of binder andchippings.prEN 12272-2, Surface dressing — Test method — Part 2: Visual assessment of defects.EN 12272-3, Surface dressing — Test method — Part 3: Determination of binder aggregate adhesivity by the Vialitplate shock test method.Annexes A, B, C and D are informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries 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 the United Kingdom.SIST EN 12272-3:2004



EN 12272-3:2003 (E)4IntroductionThe adhesion between binder and chippings is the basis of successful surface dressing. lt is important that thisbond can be obtained, initially, at the moment of construction and be ensured in cool conditions when theadhesivity problems become dominant binder with damp or dry and dusty chippings. A knowledge of adhesivityenables the choice of a binder and aggregate type for minimum risk, especially for early and late season work.1 ScopeThis European Standard specifies the measurement of the binder aggregate adhesivity, and the influence ofadhesion agents or interfacial dopes an adhesion characteristics as an aid to design binder aggregate systems forsurface dressing. lt is not intended that this method is used on site for quality control.This European Standard specifies methods of measurement of:¾ the mechanical adhesion of the binder to the surface of the aggregate;¾ the active adhesivity of the binder to the chippings;¾ the improvement of the mechanical adhesion and active adhesivity by adding an adhesion agent either into themass of the binder or by spraying the interface between binder and chippings;¾ the wetting temperature of the binder to the aggregate;¾ the variation of adhesivity below the fragility temperature.This test method is suitable for:¾ all the hydrocarbon binders used for surface dressings (e.g. conventional or polymer modified binders, fluxedor cut-back binders or, conventional or polymer modified bituminous emulsions);¾ all the aggregate types used for surface dressings;¾ following aggregate product sizes:¾ set 1: 2/5 mm, 5/8 mm, 8/11 mm and 11/16 mm;¾ set 2: 2/6 mm, 4/6 mm, 6/10 mm and 10/14 mm.NOTEFurther information concerning the purpose of the test may be found in annex D.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).ISO 48, Rubber, vulcanized or thermoplastic — Determination of hardness (Hardness between 10 IRHD and100 IRHD).SIST EN 12272-3:2004



EN 12272-3:2003 (E)53 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1active adhesivitynecessary to bond damp chippings in their natural state3.2mechanical adhesionnecessary to bond the dry chippings with their natural dust or fines making an inhibiting screen3.3wetting temperaturelowest temperature of the binder on the plate, just prior to applying the chippings, at which the number of all thestained chippings either bonded to the plate or fallen, after the shock test, is at least 90 % of the chippings3.4fragility temperaturelowest test temperature at which 90 % aggregates remain bonded to the plate3.5test temperaturetemperature at which the plates with the binder and the chippings are conditioned before the shock test4 Active adhesivity and mechanical adhesion4.1 DescriptionThe required quantity of binder is heated to spraying temperature and spread evenly an a steel plate. The test isperformed at (5 ± 1) °C.50 or 100 graded chippings are laid down on the binder and rolled if a hot binder is used.The prepared plate is turned over and put on 3-pointed supports.A steel ball is made to fall 500 mm three times onto the plate within a 10 s period.The adhesivity value is determined as the sum of number of chippings remaining bonded to the plate and thenumber of fallen chippings which are stained by the binder.NOTEIf the chippings are treated chemically or washed on site or an interfacial adhesion agent (dope) used inconstruction, then this should be simulated in the test method. If polymer modified binders are used which need special siteconditions, e. g. road temperatures > 10 °C or heated chippings, then again the test should reflect these constraints and thereport modified accordingly, e. g. increase temperature of chippings to 10 °C.4.2 Apparatus4.2.1 Flat steel plates (see Figure 1)Flat steel plates with a rim of 2 mm to 3 mm height and with following dimensions:¾ side (200 ± 1) mm ´ (200 ± 1) mm;¾ thickness (2,0 ± 0,2) mm.The plates should be flat manufactured with a tolerance of 0,2 mm across the total length in any direction. Themaximum tolerance after usage shall be 0,5 mm.SIST EN 12272-3:2004



EN 12272-3:2003 (E)6Dimensions in millimetresFigure 1 — Flat steel plate4.2.2 3-pointed supportsA device composed of a rigid base with 3-pointed supports, a vertical support ending in a lightly angled slide(3,0 ± 0,5)° to launch the ball, see Figure 2.Key1Level2BallTolerances ± 1 mm, except for— the supports: ± 0,2 mm— the ball: ± 0,5 mmFigure 2 — 3-pointed supportsSIST EN 12272-3:2004



EN 12272-3:2003 (E)74.2.3 Steel ballMass (510 ± 10) g, diameter (50,0 ± 0,5) mm.4.2.4 Rubber wheel roller (see Figure 3)Thickness of the hard rubber: (15 ± 2) mm;mass: (25 ± 1) kg;useful width: (260 ± 10) mm (see Figure 3);hardness of the rubber shall be Shore 40/150 in accordance with ISO 48.Dimensions in millimetresKey1Rubber thickness (15 ± 2) mm2Roller mass (25 ±1) kgFigure 3 — Rubber wheel roller4.2.5 SprayerFor applying adhesion agent (dope) as an interfacial layer between binder and chippings if required.4.2.6 HygrometerAccurate to 5 % at 90 % humidity.4.2.7 BalanceAccurate to 0,1 g, range at least 1 000 g.SIST EN 12272-3:2004



EN 12272-3:2003 (E)84.2.8 Climatic chambersCapable of maintaining temperatures of the samples to cover the range (30 ± 1) °C to (-25 ± 1) °C and a humiditygreater than 90 %.4.2.9 OvenCapable of heating chippings or binder e. g. (50 ± 5) °C to (170 ± 5) °C.4.2.10 Auxiliary items¾ Spatula;¾ metallic box which can be hermatically sealed;¾ basket made of a metallic gauze;¾ timing device of accuracy to ± 1 s.4.3 Procedure4.3.1 Preparation of the binder4.3.1.1 QuantityThe binder rate of spread used for the test shall be:¾ 0,7 kg/m2 when the chipping size is 4/6 mm;¾ 1,0 kg/m2 when the chipping sizes are 5/8 mm, 6/10 mm or 8/11 mm;¾ 1,3 kg/m2 when the chipping sizes are 10/14 mm or 11/16 mm.When a bitumen emulsion is tested, the above quantities apply to the residual binder after breaking and totalevaporation of the water content.4.3.1.2 TemperatureAt least 0,5 kg of binder shall be warmed up to spraying temperature typically used on site to obtain an evenspread.4.3.2 Preparation of the chippings4.3.2.1 Quantity¾ 100 chippings shall be used with the sizes 4/6 mm, 5/8 mm, 6/10 mm or 8/11 mm;¾ 50 chippings shall be used with the sizes 10/14 mm or 11/16 mm.When choosing chippings for the sample, any obviously oversized, undersized or flaky chippings shall be rejected.4.3.2.2 Treatment for mechanical adhesion testPut the chippings with their dust and fines in a carton and place it in a ventilated oven at (50 ± 1) °C for (24 ± 1) h.Put the carton containing the chippings into a box which is then hermatically sealed and placed in a temperaturecontrolled chamber at (5 ± 1) °C for (24 ± 1) h.SIST EN 12272-3:2004



EN 12272-3:2003 (E)94.3.2.3 Treatment for active adhesivity testPut the chippings with their dust and fines in a basket made of a metallic gauze and place it in a climatic chamberat (5 ± 1) °C with relative humidity greater than 90 % for (24 ± 1) h.4.3.3 Preparation of the platesClean and dry the plates before each test.Weigh out the required quantity of binder warmed up to the spraying temperature and apply it to the plate uniformlywith a spatula after checking with a spirit-level that the support is horizontal.To obtain a uniform thickness of the binder film, the plate may be heated to a maximum temperature of 50 °C, for amaximum period of 5 min.Put the plate with the binder in a climatic chamber at (5 ± 1) °C, close by the samples, for (20 ± 2) min.4.3.4 Spreading and rolling (binders excluding emulsions)Take the chippings from the climatic chamber and place them evenly on the binder.If an interfacial adhesion agent (dope) is used, spray it just prior to the application of the chippings.Carry out the rolling with the rubber roller by three passes in one direction and three passes in a crosswisedirection.4.3.5 Spreading (emulsions)Take the chippings from the climatic chamber and place them gently and uniformly onto the emulsion before anybreaking of the emulsion occurs; rolling shall not be carried out.Put the plate with the emulsion and chippings in a forced draft ventilated climatic chamber at room temperature(between 20 °C and 30 °C) for (24 ± 1) h.The water content is totally evaporated when constant mass is achieved. Constant mass is deemed to be achievedwhen the di
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