1、ICS 93.080.20Asphalt Prfverfahren fr Heiasphalt Teil 28: Vorbereitung von Proben zur Bestimmungdes Bindemittelgehaltes, des Wassergehaltes und zur KorngrenbestimmungEuropean Standard EN 12697-28 : 2000 has the status of a DIN Standard.A comma is used as the decimal marker.National forewordThis stand
2、ard has been prepared by CEN/TC 227 Road materials (Secretariat: Germany), WG 1 Bituminousmixtures.The responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building andCivil Engineering Standards Committee), Technical Committee 10.05.01 Asphalt.Ref. No. DIN EN 12697-
3、28 : 2001-04English price group 07 Sales No. 110704.02DEUTSCHE NORM April 2001EN 12697-28Continued overleaf.EN comprises 13 pages. No part of this standard may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has t
4、he exclusive right of sale for German Standards (DIN-Normen).Bituminous mixturesTest methods for hot mix asphaltPart 28: Preparation of samples for determining binder content,water content and gradingEnglish version of DIN EN 12697-28English versionICS 93.080.20Descriptors:Bituminous mixturesTest me
5、thods for hot mix asphaltPart 28: Preparation of samples for determining binder content, watercontent and grading 2000. CEN All rights of exploitation in any form and by any meansreserved worldwide for CEN national members.Ref. No. EN 12697-28 : 2000 EAsphalt Prfverfahren frHeiasphalt Teil 28: Vorbe
6、reitungvon Proben zur Bestimmungdes Bindemittelgehaltes, desWassergehaltes und zur Korngren-bestimmungThis European Standard was approved by CEN on 2000-11-24.CEN members are bound to comply with the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard the
7、 status of anational standard without any alteration.Up-to-date lists and bibliographical references concerning such national stand-ards may be obtained on application to the Management Centre or to anyCEN member.The European Standards exist in three official versions (English, French, German).A ver
8、sion in any other language made by translation under the responsibility of aCEN member into its own language and notified to the Management Centre hasthe same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, the CzechRepublic, Denmark, Finland, Franc
9、e, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland,and the United Kingdom.EN 12697-28December 2000Management Centre: rue de Stassart 36, B-1050 BrusselsEuropean Committee for StandardizationComit Europen de NormalisationEuropisches K
10、omitee fr Normung|Mlange bitumineux Essais pourenrobs chaud Partie 28:Prparation des chantillons pour ladtermination de la teneur en liant, dela teneur en eau et de la granularitPage 2EN 12697-28 : 2000Page 3EN 12697-28 : 2000Page 4EN 12697-28 : 2000Page 5EN 12697-28 : 2000Page 6EN 12697-28 : 2000Pa
11、ge 7EN 12697-28 : 2000Page 8EN 12697-28 : 2000Page 9EN 12697-28 : 2000Page 10EN 12697-28 : 2000Page 11EN 12697-28 : 2000Page 12EN 12697-28 : 2000TransferringTransferringTransferringQuarteringPut aside for reducedlaboratory sampleTransferringTransferringTransferringQuarteringPut aside for reducedlabo
12、ratory sampleElimination of approximately25 % of initial mass25 % of mass50 % of mass100 % of mass(a)(b)(c)(d)(e)(f)Laboratory samplereduced toapproximately 75 %of initial massPage 13EN 12697-28 : 2000The transferring, quartering and eliminating should berepeated as many times as is necessary to obtain a residualquantity (see Figure 2 (a to f) of about four times the massof the test portion required for test.TransferringTransferringTransferringQuarteringMoisturecontentsample whenrequiredCarry out reductionsequence once morePortion
