1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBituminous binders Determination of breaking behaviour and immediate adhesivity of cationic bituminous emulsions with 2/4 mm aggregatePD CEN/TS 16346:2012National forewordThis Pu
2、blished Document is the UK implementation of CEN/TS 16346:2012.The UK participation in its preparation was entrusted to Technical CommitteePTI/13, Petroleum Testing and Terminology.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does
3、not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 76571 1ICS 75.140; 91.100.50Compliance with a British Standard cannot confer immunity froml
4、egal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 31 October 2012.Amendments issued since publicationAmd. No. Date Text affectedPUBLISHED DOCUMENTPD CEN/TS 16346:2012TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SP
5、EZIFIKATION CEN/TS 16346 October 2012 ICS 75.140; 91.100.50 English Version Bituminous binders - Determination of breaking behaviour and immediate adhesivity of cationic bituminous emulsions with 2/4 mm aggregate Bitumes et liants bitumineux - Dtermination du comportement la rupture et de ladhsivit
6、immdiate des mulsions cationiques de bitume avec un granulat de 2/4 mm Bitumen und bitumenhaltige Bindemittel - Bestimmung der Brechzeit und des kurzfristigen Haftverhaltens von kationischen Bitumenemulsionen mit Gesteinskrnung 2/4 mm This Technical Specification (CEN/TS) was approved by CEN on 25 M
7、arch 2012 for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are
8、required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible
9、 conversion of the CEN/TS into an EN is reached. 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, Ireland, Italy, Latvia, Lithuani
10、a, 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: Avenue Marnix 17, B-1000 Brussels 2
11、012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 16346:2012: EPD CEN/TS 16346:2012CEN/TS 16346:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 55 Reagents and materia
12、l 56 Apparatus .57 Sampling .58 Procedure .59 Expression of results 610 Precision .711 Test report 7Annex A (normative) Guidance for the marking of coated surface area .8Bibliography 9PD CEN/TS 16346:2012CEN/TS 16346:2012 (E) 3 Foreword This document (CEN/TS 16346:2012) has been prepared by Technica
13、l Committee CEN/TC 336 “Bitumimous Binders”, the secretariat of which is held by AFNOR/BN Ptrole. 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 pat
14、ent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Maced
15、onia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 16346:2012CEN/TS 16346:2012 (E) 4 1 Scope This Technical Spe
16、cification specifies a method for the determination of the breaking and immediate adhesivity behaviour of cationic bituminous emulsions in contact with an aggregate. The method applies to emulsions used for surface dressing applications and can be used for formulation and production control purposes
17、. WARNING The use of this Technical Specification may involve hazardous materials, operations and equipment. This Technical Specification does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this Technical Specification to establish
18、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 indispensable for its application. For dated references, only th
19、e 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 Preparation of test samples EN 13043, Aggregates for bituminou
20、s mixtures and surface treatments of roads, airfields and other trafficked areas 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 full breaking stage at which, during the mixing process between aggregate particles and emulsion conducted as spe
21、cified in 8.2, all aggregate particles have agglomerated into a single compact mass 3.2 breaking time time in seconds, counted from the start of the mixing process, until full breaking (3.1) is reached 3.3 breaking behaviour appreciation of the actual degree of breaking of the emulsion after the mix
22、ture has reached the full breaking stage Note 1 to entry The breaking behaviour is measured by the number of successive washings of the final mixtures which are necessary until the water runs clear. 3.4 immediate adhesivity qualitative assessment of the ability of the binder from a bituminous emulsi
23、on to resist the action of water just after the aggregate coating PD CEN/TS 16346:2012CEN/TS 16346:2012 (E) 5 4 Principle Prescribed quantities of emulsion and 2/4 mm aggregate are mixed under specified conditions. The time it takes to obtain a single agglomerated mass is a measure of the breaking t
24、ime of the emulsion. After 5 min 15 s, the final mixture is washed with water and the percentage of the aggregate surface covered with binder is assessed visually under specified conditions. This percentage is a measure of the immediate adhesivity of the emulsion with the considered aggregate. 5 Rea
25、gents and material 5.1 Aggregate, being either a reference aggregate or an aggregate to be used on a specific job site, which passes through a sieve having a mesh size of 4 mm and is retained on a sieve having a mesh size of 2 mm (sieve sizes belonging to the basic set specified in EN 13043). 5.2 Wa
26、ter, clean, ideally potable. 5.3 Cleaning agents, conventionally used in a laboratory. 6 Apparatus 6.1 Mixing bowls (at least 2), semi-spherical, acid resistant metal, diameter (150 5) mm. 6.2 Rigid, metal spatula. 6.3 Timer, accurate to at least 0,5 s over 60 s. 6.4 Beakers (at least 2), approximat
27、ely 500 ml capacity. 6.5 Balance, of sufficient capacity, accurate to 0,1 g. 6.6 Ventilated oven, capable of maintaining a temperature of (110 5) C. 7 Sampling Sample the emulsion to be tested in accordance with EN 58. Prepare the test samples in accordance with EN 12594. 8 Procedure 8.1 General Car
28、ry out the procedure under normal laboratory conditions (23 5) C. Wash the aggregate with water (5.2) and dry it in the ventilated oven (6.6) at (110 5) C for about 2 h. Let the aggregate cool down to ambient temperature. The test procedures described in 8.2 and 8.3 shall be performed in immediate s
29、uccession and repeated with a new mixing bowl and beaker on a second sample of the same emulsion and aggregate. PD CEN/TS 16346:2012CEN/TS 16346:2012 (E) 6 8.2 Determination of breaking time 8.2.1 Weigh (200 2) g of aggregate (5.1) into the clean and dry mixing bowl (6.1). Dig a conical shaped cavit
30、y in the centre of the aggregate heap. 8.2.2 Pour rapidly (20 0,5) g of emulsion into the previously formed cavity and start immediately the timing device (6.3) and the mixing process using the spatula (6.2). Mixing shall be done with a circular motion going from bottom to top at an approximate rate
31、 of 1 revolution per second, while the bowl is simultaneously rotated around its vertical axis. 8.2.3 Continue mixing without interruption until full breaking (3.1) is obtained. Record immediately the breaking time in seconds (3.2). If the emulsion breaks and coats the aggregate, but without agglome
32、rating it, this has to be mentioned in the test report (Clause 11). 8.3 Determination of breaking behaviour and immediate adhesivity 8.3.1 5 min 15 s after the start of the timing device, fill the mixing bowl by holding it under a slow stream of water. Once full, pour the water out of the mixing bow
33、l. Repeat this procedure until the water runs clear and record the number of times this procedure has to be repeated. 8.3.2 Assess immediately the surface coated with the film of binder and grade it according to the scheme indicated in 9.3. 9 Expression of results 9.1 Breaking time Express the break
34、ing times as the arithmetic means of the two individual breaking time results to the nearest second. If the individual values differ by more than 10 % of the arithmetic mean, the test has to be repeated. 9.2 Breaking behaviour Express the numbers of times the mixing bowl was emptied until the water
35、runs clear. 9.3 Immediate adhesivity The surface coated with the film of binder has to be graded according to the following scheme: 100: all the surface is coated; 90: more than approximately 90 % of the surface is coated; 75: approximately 75 % to 90 % of the surface is coated; 50: approximately 50
36、 % to 75 % of the surface is coated; 50: less than approximately 50 % of the surface is coated; 0: the binder is separated from the aggregates, except for some faint marks. PD CEN/TS 16346:2012CEN/TS 16346:2012 (E) 7 The simple coloration of the aggregate surface by adsorbed light binder fractions s
37、hall not qualify this surface as a coated surface. NOTE 1 A guidance for the grading of the surface covered with binder is given, in the form of indicative sketches, in Annex A. NOTE 2 If necessary, to facilitate the assessment, it can be compared with an untreated and immersed aggregate. 10 Precisi
38、on 10.1 Breaking time 10.1.1 Repeatability, r In the long run and in normal and correct operation of the test method, the difference between two successive test results, obtained by the same operator with the same apparatus under constant operating conditions on identical test material, would exceed
39、 10 % of the mean value in only one case in twenty. 10.1.2 Reproducibility, R The reproducibility for this Technical Specification is not currently available. 10.2 Breaking behaviour The method is qualitative and it is not possible to quantify the breaking behaviour precision. However, tests carried
40、 out by the same operator have shown that the same result is generally achieved for any given bitumen emulsion. 10.3 Immediate adhesivity The method is qualitative and it is not possible to quantify the immediate adhesivity precision. However, tests carried out by the same operator have shown that t
41、he same result is generally achieved for any given bitumen emulsion. 11 Test report The test report shall contain at least the following information: a) reference to this Technical Specification; b) type and complete identification of the emulsion sample under test; c) type and identification of the
42、 aggregate used; d) result of the test (see Clause 9), including the observations requested under 8.2.3; e) number of tests performed; f) any deviation, by agreement or otherwise, from the procedure described; g) date of the test. PD CEN/TS 16346:2012CEN/TS 16346:2012 (E) 8 Annex A (normative) Guida
43、nce for the marking of coated surface area Key a) Mark 100 b) Mark 90 c) Mark 75 d) Mark 50 e) Mark 50 f) Mark 0 Figure A.1 Typical cases of partially coated aggregates PD CEN/TS 16346:2012CEN/TS 16346:2012 (E) 9 Bibliography 1 EN 13808, Bitumen and bituminous binders Framework for specifying cation
44、ic bituminous emulsions PD CEN/TS 16346:2012This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and services. It presents the UK view on standards in E
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