1、BS EN 1430:2009 ICS 75.140, 91.100.50NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDBitumen andbituminous binders Determination ofparticle polarity ofbituminous emulsionsBS 2000-292:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/07/2009 03:00, Un
2、controlled Copy, (c) BSIThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 30 April2009 BSI 2009ISBN 978 0 580 58850 1Amendments/corrigenda issued since publicationDate CommentsBS EN 1430:2009National forewordThis British Standard is the UK implemen
3、tation of EN 1430:2009. Itsupersedes BS EN 1430:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PTI/13, Petroleum testing and terminology.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publicat
4、ion does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.Energy Institute, under the brand of IP, publishes and sells all Parts of BS 2000, and all BS E
5、N petroleum test methods that would be Part of BS 2000, both in its annual publication “Standard methods for analysis and testing of petroleum and related products and British Standard 2000 Parts” and individually.Further information is available from: Energy Institute, 61 New Cavendish Street, Lond
6、on W1G 7AR. Tel: 020 7467 7100. Fax: 020 7255 1472.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/07/2009 03:00, Uncontrolled Copy, (c) BSIBS EN 1430:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1430March 2009ICS 75.140; 91.100.50 Supersedes EN 1430:1999 English VersionBitumen an
7、d bituminous binders - Determination of particlepolarity of bituminous emulsionsBitumes et liants bitumineux - Dtermination de la polaritdes particules des mulsions de bitumeBitumen und bitumenhaltige Bindemittel - Bestimmung derTeilchenpolaritt von BitumenemulsionenThis European Standard was approv
8、ed by CEN on 17 January 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 any alteration. Up-to-date lists and bibliographical references concerning such nationalsta
9、ndards 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 by translationunder the responsibility of a CEN member into its own language and notified t
10、o 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Neth
11、erlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in a
12、ny form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1430:2009: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/07/2009 03:00, Uncontrolled Copy, (c) BSIBS EN 1430:2009EN 1430:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and def
13、initions .4 4 Principle 4 5 Reagents and materials 4 6 Apparatus .5 7 Sampling .5 8 Procedure .5 9 Expression of results 6 10 Test report 6 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/07/2009 03:00, Uncontrolled Copy, (c) BSIBS EN 1430:2009EN 1430:2009 (E) 3 Foreword This document (EN
14、1430:2009) has been prepared by Technical 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 September 2009, and
15、conflicting national standards shall be withdrawn at the latest 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. Thi
16、s document supersedes EN 1430:1999. According to the CEN/CENELEC 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
17、, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/07/2009 03:00, Uncontrolled Copy, (c) BSIBS EN 14
18、30:2009EN 1430:2009 (E) 4 1 Scope This European Standard specifies a method for the determination of the particle polarity of bituminous emulsions. WARNING The use of this standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety
19、problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 2 Normative references The following referenced documents are indispensable for the app
20、lication of this document. 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 - Pr
21、eparation of test samples EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987) ISO 5280, Xylene for industrial use Specification 3 Terms and definitions For the purposes of this document, the following definition applies. 3.1 particle polarity sign of the
22、 electric charge carried by particles in ionic emulsions NOTE In cationic emulsions, particles have positive polarity. In anionic emulsions, particles have negative polarity. 4 Principle A direct or rectified current is passed through a bituminous emulsion between two parallel plate electrodes. Depo
23、sition of a layer of bitumen on the anode indicates negative polarity and that the emulsion is anionic. Deposition of particles on the cathode indicates positive polarity and that the emulsion is cationic. 5 Reagents and materials Use only reagents of recognized analytical grade and water conforming
24、 to grade 3 of EN ISO 3696. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/07/2009 03:00, Uncontrolled Copy, (c) BSIBS EN 1430:2009EN 1430:2009 (E) 5 5.1 Efficient rinsing agent Efficient rinsing agents or xylene, conforming to ISO 5280, can be used. 5.2 Propan-2-ol. 5.3 Ethanol, 96 % min
25、imum or methylated spirit 99 %. 6 Apparatus Usual laboratory apparatus and glassware, together with the following: 6.1 Electrical circuit, (see Figure 1) consisting of the following components: 6.1.1 Current source, capable of supplying a direct or rectified current of 8 mA at a potential of 4,5 V t
26、o 15 V for 30 min. 6.1.2 Milliammeter, with a full scale deflection of 10 mA. 6.1.3 Potentiometer. 6.1.4 Electrodes, two stainless steel plates approximately 100 mm long, 25 mm wide and 1,0 mm thick, with an insulating device to hold the plates parallel and 12 mm apart in the emulsion (see Figure 1)
27、. 6.1.5 Insulator, polytetrafluoroethylene resin square rod, virgin electrical grade, (12 2) mm long, (25 2) mm wide and (15 5) mm thick. 6.2 Glass beaker, 150 ml or 250 ml capacity. 6.3 Glass rod, approximately 100 mm long and 6 mm thick or other suitable device that is capable of insulating and su
28、spending the electrode assembly in the emulsion. 6.4 Timing device, stop watch or other suitable device. 7 Sampling The laboratory sample shall be sampled in accordance with EN 58 and shall be prepared in accordance with EN 12594. The sample shall be divided into two portions; in case of doubt conce
29、rning the results, both portions shall be tested. 8 Procedure 8.1 Preparation of electrodes Clean the electrodes (6.1.4) in the following sequence: wash with water; wash with propan-2-ol (5.2) or ethanol or methylated spirit (5.3); Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/07/2009 03
30、:00, Uncontrolled Copy, (c) BSIBS EN 1430:2009EN 1430:2009 (E) 6 wash with rinsing agents or xylene (5.1); wash with propan-2-ol (5.2) or ethanol (5.3); wash with water. 8.2 Pour sufficient emulsion into a beaker (6.2) to permit immersion of the electrodes to a depth of approximately 25 mm in the em
31、ulsion. Suspend the electrodes, separated by the insulator (6.1.5) from the glass rod. Immerse the electrodes to the required depth in the emulsion by placing the glass rod across the top of the beaker (6.3). NOTE Any apparatus capable of manual height adjustment and of insulating and suspending the
32、 electrodes in the emulsion may be used. 8.3 Connect the electrodes to the direct current source (6.1.1), the gap between the 2 electrodes shall be equal to (12 2) mm, as shown on Figure 1. 8.4 Adjust the current to between 8 mA and 10 mA with the potentiometer (6.1.3) and start timing with the suit
33、able timing device (6.4). Record the current used. 8.5 When the current drops to 2 mA, or at the end of 30 min, whichever occurs first, disconnect the current source, and gently wash the electrodes in running water. 8.6 Observe the deposition of bituminous binder on the electrodes, and record the po
34、larity. NOTE A cationic emulsion (with positive polarity) will deposit an appreciable layer of binder on the cathode (negative electrode). An anionic emulsion (with negative polarity) will deposit an appreciable layer of binder on the anode (positive electrode). 9 Expression of results Express the p
35、olarity of bituminous particles in the emulsion as positive or negative (see 8.6). 10 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; c) intensity of the current used (
36、see 8.4); d) result of the test (Clause 9); e) any deviation, by agreement or otherwise, from the procedure specified; f) date of the test. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/07/2009 03:00, Uncontrolled Copy, (c) BSIBS EN 1430:2009EN 1430:2009 (E) 7 KEY 1. Current source 2. Po
37、tentiometer 3. Milliammeter d: distance between the two electrodes d = (12 2) mm Figure 1 Example of test apparatus layout with electrical circuit Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/07/2009 03:00, Uncontrolled Copy, (c) BSIEnergy InstituteBuying Parts of BS 2000Orders for BS 2
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39、ices389 Chiswick High RoadLondonW4 4ALTel: +44 (0)20 8996 9001Fax: +44 (0)20 8996 7001www.bsi-Order hard copy standards securely via:www.bsi- exists in all BS 2000 publications. No part of this publication may be reproduced in any form without the prior permission in writing of BSI and the Energy Institute. Enquiries about copyright should be made to the Secretary of PTI/13 at the Energy Institute.PTI/13BS 2000 SeriesLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 21/07/2009 03:00, Uncontrolled Copy, (c) BSI
