1、July 2009DEUTSCHE NORM English price group 8No part of this standard 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).ICS 75.140; 91.100.50!$XTj“153
2、4971www.din.deDDIN EN 12847Bitumen and bituminous binders Determination of settling tendency of bituminous emulsionsEnglish version of DIN EN 12847:2009-07Bitumen und bitumenhaltige Bindemittel Bestimmung des Absetzverhaltens von BitumenemulsionenEnglische Fassung DIN EN 12847:2009-07SupersedesDIN E
3、N 12847:2002-08www.beuth.deDocument comprises 11 pagesDIN EN 12847:2009-07 2 National foreword This standard has been prepared by Technical Committee CEN/TC 336 “Bituminous binders” (Secretariat: AFNOR, France). The responsible German bodies involved in its preparation were the Normenausschuss Mater
4、ialprfung (Materials Testing Standards Committee) and the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Joint Technical Committee NA 062-03-32 GA Bitumen; Prfverfahren und Anforderungen fr die Bindemittel. Amendments This standard differs from DIN EN 12847:2002-08 as
5、 follows: a) As an option, the determination of the water content as specified in EN 1431 has been included. b) The test procedure has been described in more detail. c) The standard has been editorially revised. Previous editions DIN EN 12847: 2002-08 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORME
6、N 12847March 2009ICS 75.140; 91.100.50 Supersedes EN 12847:2002 English VersionBitumen and bituminous binders - Determination of settlingtendency of bituminous emulsionsBitumes et liants bitumineux - Dtermination de la tendance la dcantation des mulsions de bitumeBitumen und bitumenhaltige Bindemitt
7、el - Bestimmung desAbsetzverhaltens von BitumenemulsionenThis European Standard was approved by CEN on 17 February 2009.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
8、any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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
9、by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Ge
10、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGMa
11、nagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12847:2009: EEN 12847:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Princip
12、le 4 5 Reagents and materials 4 6 Apparatus .5 7 Sampling .5 8 Procedure .5 9 Calculation 6 10 Expression of results 6 11 Precision .6 12 Test report 7 Bibliography 9 DIN EN 12847:2009-07 EN 12847:2009 (E) 3 Foreword This document (EN 12847:2009) has been prepared by Technical Committee CEN/TC 336 “
13、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 September 2009, and conflicting national standards shall be withdrawn at the latest
14、by September 2009. 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. This document supersedes EN 12847:2002. According to the CEN/CENELE
15、C Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembou
16、rg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 12847:2009-07 EN 12847:2009 (E) 4 1 Scope This European Standard specifies a method for the determination of the settling tendency of bituminous emulsions. WARNING
17、 The use of this standard can involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine
18、the applicability of regulatory limitations prior to use. 2 Normative references The following referenced documents 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 (inc
19、luding any amendments) applies. EN 58, Bitumen and bituminous binders Sampling bituminous binders EN 1428, Bitumen and bituminous binders Determination of water content in bitumen emulsions Azeotropic distillation method EN 1431, Bitumen and bituminous binders Determination of recovered binder and o
20、il distillate from bitumen emulsions by distillation EN 12594, Bitumen and bituminous binders Preparation of test samples EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696:1987) 3 Terms and definitions For the purposes of this document, the following terms and
21、 definitions apply. 3.1 settling tendency difference in water content of the top layer and the bottom layer of a prescribed volume of sample after standing for a specified time at ambient temperature 4 Principle The sample is allowed to stand for the specified time at ambient temperature in a stoppe
22、red graduated cylinder, after which the water contents of the top and bottom layers are determined either using EN 1428 or EN 1431. The settling tendency is calculated as the difference between the two water contents. 5 Reagents and materials 5.1 General Use only reagents of recognised analytical gr
23、ade and water conforming to grade 3 of EN ISO 3696. 5.2 Cleaning agents As used conventionally in the laboratory. DIN EN 12847:2009-07 EN 12847:2009 (E) 5 6 Apparatus Usual laboratory apparatus and glassware, together with the following: 6.1 Stoppered glass graduated cylinder, 600 ml capacity, with
24、one division mark at 500 ml. This vessel is modified with two closable side tubes. The dimensions are shown in Figure 1. The two side tubes may be closed either by a rubber or glass stopper, or by a rubber tube with a pinch-clamp cock. 6.2 Distillation apparatus, as described in EN 1428 or EN 1431,
25、depending on the method chosen for the determination of water content. 6.3 Beakers of appropriate capacity. 7 Sampling The material under test shall be sampled in accordance with EN 58 and prepared in accordance with EN 12594. 8 Procedure 8.1 General Carry out the procedure under normal laboratory c
26、onditions. NOTE “Normal laboratory conditions“ means that the range of temperature is 18 C to 28 C. 8.2 Test The number of test cylinders to be used shall be defined depending upon the test method used to determine water content (EN 1428 or EN 1431). In general, one cylinder should be sufficient whe
27、n EN 1428 is used, whereas 4 cylinders will be needed when using EN 1431. Close the two side tubes of the graduated cylinder (6.1). Pour the emulsion test sample into the cylinder until the surface of the liquid reaches the 500 ml level. Stopper the cylinder tightly and allow to stand undisturbed fo
28、r the specified time time (t 4 hours). If necessary, remove any skin before drawing a test portion. At the end of the standing period, without disturbing the contents of the cylinder, remove the stopper and draw a test portion of approximately 55 ml, from the top of the cylinder, through the upper s
29、ide tube of the cylinder into a beaker (6.3). Allow 5 min for bitumen emulsion adhering to the wall of the cylinder to flow into the beaker. When several cylinders are needed, repeat the operation by drawing successively the test portion from the top of each cylinder into the receiving beaker (6.3).
30、 Gently stir the resulting test portion (p1) until uniform using a glass rod once the drawn off has ended. Drain the emulsion from the middle part of the cylinder by opening the lower side tube and allowing the emulsion to flow into a container until the flow ceases. Discard this portion of emulsion
31、. Close the lower side tube. DIN EN 12847:2009-07 EN 12847:2009 (E) 6 Stir the remaining emulsion (approximately 55 ml), so that any sediment adhering to the wall or bottom of the cylinder is loosened. If the homogenisation of the remaining emulsion in the bottom part of the cylinder cannot be perfo
32、rmed correctly, due to for instance broken emulsion, the test shall be aborted. This information shall then be mentioned in the report. Drain the remaining contents of the cylinder into a second beaker (6.3) to obtain a second test portion. When several cylinders are needed, drain successively the r
33、emaining contents of each cylinder into the second beaker (6.3). Gently stir the resulting test portion (p2) until uniform using a glass rod once the drawn off has ended. Determine the water content of each test portion according to EN 1428 or EN 1431, depending on the method chosen for the determin
34、ation of water content. 9 Calculation Calculate the settling tendency, ST, of the test sample, expressed in mass percentage, by means of the following equation: ST = ( a b) where: a is the water content of the top layer, i.e. the first test portion, p1, in mass percentage; b is the water content of
35、the bottom layer, i.e. the second test portion, p2, in mass percentage. NOTE Negative values, obtained for the settling tendency, indicate that the bituminous phase rises to the surface. 10 Expression of results Report the specified time of standing, t (see Clause 8), the water content, a, of the to
36、p layer and the water content, b, of the bottom layer (see Clause 9). Express the result, obtained in accordance with Clause 9, as a mass percentage, rounded to the nearest 0,1 % (m/m). 11 Precision NOTE The precision of the method was evaluated in accordance with EN ISO 4259 1. 11.1 Repeatability T
37、he difference between two successive test results, obtained by the same operator with the same apparatus under constant operating conditions on identical test material would, in the long run, in the normal and correct operation of the test method, exceed the values mentioned in Table 1 in only one c
38、ase in twenty. DIN EN 12847:2009-07 EN 12847:2009 (E) 7 Table 1 Repeatability Settling tendency% (m/m) Repeatability r 0 % to 8 % mass fraction 0,4 % mass fraction 8 % mass fraction 5 % of the result (expressed as a mass %) 11.2 Reproducibility The difference between two single and independent resul
39、ts obtained by different operators working in different laboratories on identical test material would, in the long run, in the normal and correct operation of the test method, exceed the values mentioned in Table 2 in only one case in twenty. Table 2 Reproducibility Settling tendency % (m/m) Reprodu
40、cibility R 0 % to 8 % mass fraction 0,8 % mass fraction 8 % mass fraction 10 % of the result (expressed as a mass %) 12 Test report The test report shall contain at least the following information: a) type and complete identification of the sample under test; b) reference to this European Standard;
41、c) result of the test, the settling tendency, ST, and the specified time of standing/settling, t, the water content, a, of the top layer and the water content, b, of the bottom layer (see Clause 10); d) any deviation, by agreement or otherwise, from the procedure specified (for example any case of e
42、mulsion adhering to the wall or bottom); e) date of sampling, date of sample preparation and date of the test. DIN EN 12847:2009-07 EN 12847:2009 (E) 8 Dimensions in millimetres Key 1. Top layer 2. Bottom layer 3. Closure 4. Middle part Figure 1 Dimensions of graduated cylinder DIN EN 12847:2009-07 EN 12847:2009 (E) 9 Bibliography 1 EN ISO 4259, Petroleum products - Determination and application of precision data in relation to methods of test (ISO 4259:2006) DIN EN 12847:2009-07
