1、September 2012 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I
2、CS 75.140; 91.100.50!$Vd“1915165www.din.deDDIN EN 16345Bitumen and bituminous binders Determination of efflux time of bituminous emulsions using theRedwood No. II Viscometer;English version EN 16345:2012,English translation of DIN EN 16345:2012-09Bitumen und bitumenhaltige Bindemittel Bestimmung der
3、 Ausflusszeit von Bitumenemulsionen mit dem RedwoodNr. II-Viskosimeter;Englische Fassung EN 16345:2012,Englische bersetzung von DIN EN 16345:2012-09Bitumes et liants bitumineux Mesure du temps dcoulement des mulsions bitumineuses avec le ViscosimtreRedwood No. II;Version anglaise EN 16345:2012,Tradu
4、ction anglaise de DIN EN 16345:2012-09www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 11 pages 08.12 DIN EN 16345:2012-09 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee
5、CEN/TC 336 “Bituminous binders” (Secretariat: AFNOR, France). The responsible German bodies involved in its preparation were the Normenausschuss Materialprfung (Materials Testing Standards Committee) and the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Joint Committ
6、ee NA 062-03-32 GA Bitumen; Prfverfahren und Anfor-derungen fr die Bindemittel. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16345 July 2012 ICS 75.140; 91.100.50 English Version Bitumen and bituminous binders - Determination of efflux time of bituminous emulsions using the Redwood No. II Vi
7、scometer Bitumes et liants bitumineux - Mesure du temps dcoulement des mulsions bitumineuses avec le Viscosimtre Redwood No. II Bitumen und bitumenhaltige Bindemittel - Bestimmung der Ausflusszeit von Bitumenemulsionen mit dem Redwood Nr. II-Viskosimeter This European Standard was approved by CEN on
8、 25 May 2012. 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 any alteration. Up-to-date lists and bibliographical references concerning such national standards may be
9、 obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to t
10、he CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ir
11、eland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenu
12、e Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16345:2012: EEN 16345:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 45 Reagents and mater
13、ials 46 Apparatus .47 Sampling and preparation of sample.68 Procedure .69 Expression of results 710 Precision .711 Test report 7Annex A (normative) Specifications of thermometer 8Bibliography 9DIN EN 16345:2012-09 EN 16345:2012 (E) 3 Foreword This document (EN 16345:2012) has been prepared by Techni
14、cal Committee CEN/TC 336 “Bituminous Binders”, the secretariat of which is held by AFNOR. 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 January 2013, and conflicting national standards shall be
15、withdrawn at the latest by May 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations
16、, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
17、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16345:2012-09 EN 16345:2012 (E) 4 1 Scope This European Standard specifies a method for the determination of the efflux time (in
18、seconds) of a bituminous emulsion at 85 C using the Redwood No. II Viscometer. WARNING The use of this European Standard can involve hazardous materials, operations and equipment. This European Standard does not purport to address all of the safety problems associated with its use. It is the respons
19、ibility of the user of this European Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indis
20、pensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 58, Bitumen and bituminous binders Sampling bituminous binders EN 12594, Bitumen and bituminous binders Pre
21、paration of test samples 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 viscosity internal resistance of a fluid to flow 3.2 efflux time time needed for a specified volume of a material to flow through a specified orifice at a specified temp
22、erature Note 1 to entry: The efflux time is an indirect measure of the viscosity and is also referred to as “pseudo-viscosity”. 4 Principle The efflux time of a bituminous emulsion is determined using the Redwood No. II Viscometer which determines the time of efflux of a 50 ml sample through a 3,8 m
23、m orifice at 85 C. 5 Reagents and materials 5.1 Spirit level. 5.2 Soft tissue paper, or other material suitable for drying the oil cup, which will not leave any residue. 6 Apparatus Usual laboratory apparatus and glassware, together with the following: 6.1 Standard Redwood No. II Viscometer, of the
24、dimensions given in Figure 1, complete with ball-valve, oil cup cover, thermometer clip, stand and screen. DIN EN 16345:2012-09 EN 16345:2012 (E) 5 Dimensions in millimetres Key 1 oil cup 2 stirrer body cut away between vanes 3 stirrer 4 brass tube 5 agate jet 6 bottom of heating bath 7 washer 8 min
25、imum bore Figure 1 Redwood No. II Viscometer: section of cup 6.2 Thermometer, conforming to the requirements described in Annex A. Other temperature measuring devices may be used instead of mercury stem thermometers. However, the mercury stem thermometer is the reference device. Therefore, any alter
26、native device employed shall be calibrated so as to provide the same readings as would be provided by the mercury stem thermometer, recognising and allowing for the fact of changed thermal response times compared with the mercury thermometer. 6.3 Receiver, that is a Kohlrausch type flask, of (50 0,5
27、) ml capacity at 20 C or a 100 ml cylinder with graduations at 25 ml and 75 ml. DIN EN 16345:2012-09 EN 16345:2012 (E) 6 6.4 Timing device / stopwatch, capable of reading to 0,2 s or less and accurate to 0,1 % over a period of not less than 15 min. 6.5 Loosely stoppered container, of at least 200 ml
28、 capacity. 6.6 Water/oil bath. 7 Sampling and preparation of sample The material under test shall be sampled in accordance with EN 58 and prepared in accordance with EN 12594. Place approximately 200 ml of the specimen in a suitable, clean, loosely stoppered container and bring to a temperature a li
29、ttle over the test temperature (85 C) by immersing in a hot water or oil bath. Do not heat the specimen over a flame or by immersing hot bodies in it. 8 Procedure 8.1 General Carry out the procedure in a laboratory at a room temperature between 18 C and 28 C. 8.2 Preparation of apparatus Clean the o
30、il cup with suitable solvents and dry thoroughly with soft tissue paper or other material which will not leave any residue. Set up the viscometer, level by using a spirit level and fill the bath with water or oil to not less than 10 mm below the rim of the oil cup at the test temperature. 8.3 Measur
31、ement Heat the viscometer bath to a few degrees above the test temperature. Homogenize the specimen by stirring and pour the prepared specimen into the oil cup. Adjust the temperature of the bath until the specimen in the cup is maintained at the test temperature of 85 C, stirring the contents of th
32、e bath and cup during the process. Stir the specimen with the thermometer during the preliminary period. Do not stir the specimen during the actual determination. When the temperature of the specimen has become steady at the test temperature, adjust the liquid level, if necessary, by removing any ex
33、cess until the surface of the specimen touches the filling point. This should be achieved within 15 min of pouring the specimen into the oil cup in order to minimize loss of water by evaporation. Slightly warm the oil cup cover, place it in position on the oil cup and swing the oil cup thermometer t
34、owards the closed end of the curved slot in the cover. Place the clean, dry standard 50 ml flask or 100 ml cylinder containing 25 ml of water below the jet with the neck a few millimetres from the bottom of the jet. Do not insulate the flask in any way. Lift the ball-valve and simultaneously start t
35、he time recorder. Suspend the valve from the clip, supporting the oil cup thermometer by means of the hook in the wire stem. Stop the timing device at the instant the specimen reaches the 50 ml graduation mark on the flask or the 75 ml graduation on the cylinder and note the final reading of the oil
36、 cup thermometer. Reject any determination if the temperature of the specimen in the oil cup varies during the run by more than 0,3 C. DIN EN 16345:2012-09 EN 16345:2012 (E) 7 9 Expression of results Express the efflux time in Redwood No. II seconds to the nearest 0,5 s. 10 Precision 10.1 Repeatabil
37、ity In the long run and in normal and correct operation of the test method, the difference between two test results obtained by the same operator with the same apparatus under constant operating conditions on identical test material would exceed the value given in Table 1 in only one case in twenty.
38、 10.2 Reproducibility In the long run and in normal and correct operation of the test method, the difference between two single and independent test results obtained by different operators working in different laboratories on identical test material would exceed the value given in Table 1 in only on
39、e case in twenty. Table 1 Repeatability and reproducibility values Efflux time Repeatability Reproducibility 50 5 % of the mean 10 % of the mean 11 Test report The test report shall contain at least the following information: a) type and complete identification of the sample under test (including da
40、te of the sampling and date of the sample preparation); b) reference to this European Standard; c) test temperature (if different to the reference test temperature of 85 C); d) diameter of the orifice; e) result of the test in seconds (see Clause 9); f) any deviation, by agreement or otherwise, from
41、 the procedure specified; g) date of the test. DIN EN 16345:2012-09 EN 16345:2012 (E) 8 Annex A (normative) Specifications of thermometer a) Temperature range 76 C to + 122 C b) Immersion 65 mm c) Scale marks: 1) Subdivisions 0,2 C 2) Long lines at each 1C + 5 C 3) Numbers at each 5 C 4) Maximum lin
42、e width 0,15 mm 5) Scale error, maximum 0,2 C d) Expansion chamber permitting heating to Required e) Total length 330 mm to 350 mm f) Stem outside diameter 5,5 mm to 8,0 mm g) Bulb length 10 mm to 16 mm h) Bulb outside diameter Not greater than stem i) Scale location: 1) Distance between bottom of b
43、ulb and line at 76 C 115 mm minimum 2) Length of scale range 150 mm to 190 mm NOTE The thermometer IP-10C has been found to be suitable. DIN EN 16345:2012-09 EN 16345:2012 (E) 9 Bibliography 1 EN 13302:2010, Bitumen and bituminous binders Determination of dynamic viscosity of bituminous binder using a rotating spindle apparatus 2 EN ISO 4788:2005, Laboratory glassware Graduated measuring cylinders (ISO 4788:2005) 3 BS 593:1989, Specification for laboratory thermometers DIN EN 16345:2012-09
