1、BS EN 933-9:2009ICS 91.100.15NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDTests for geometricalproperties ofaggregatesPart 9: Assessment of fines Methylene blue testBS EN 933-9:2009 +A1:2013BS EN 933-9:2009+A1:2013ISBN 978 0 580 80138 9Amendments/corrigenda i
2、ssued since publicationDate Comments30 April 2013 Implementation of CEN amendment A1:2013This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2010. The British Standards Institution 2013. Published by BSI Standards Limited 2013National fo
3、rewordThis British Standard is the UK implementation of EN 933-9:2009+A1:2013. It supersedes BS EN 933-9:2009, which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendmen
4、t. For example, text altered by CEN amendment A1 is indicated by .The UK participation in its preparation was entrusted by Technical Committee B/502, Aggregates to Subcommittee B/502/6, Test methods.A list of organizations represented on this subcommittee can be obtained on request to its secretary.
5、The publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 933-9:2009+A1 April 2013 ICS
6、 91.100.15 Supersedes EN 933-9:2009 English Version Tests for geometrical properties of aggregates - Part 9: Assessment of fines - Methylene blue test Essais pour dterminer les caractristiques gomtriques des granulats - Partie 9 : Qualification des fines - Essai au bleu de mthylne Prfverfahren fr ge
7、ometrische Eigenschaften von Gesteinskrnungen - Teil 9: Beurteilung von Feinanteilen-Methylenblau-Verfahren This European Standard was approved by CEN on 12 June 2009 and includes Amendment 1 approved by CEN on 12 February 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulatio
8、ns 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 obtained on application to the CEN-CENELEC Management Centre or to any CEN member. T
9、his 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 the CEN-CENELEC Management Centre has the same status as the official versions. CEN me
10、mbers 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, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Port
11、ugal, 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 2013 CEN All rights of exploitation in any form and by a
12、ny means reserved worldwide for CEN national Members. Ref. No. EN 933-9:2009+A1:2013: E EN 933-9:2009+A1:2013 (E) 2 Contents Page Foreword . 3 1 Scope 5 2 Normative references . 5 3 Terms and definitions . 5 4 Principle . 6 5 Reagents 6 6 Apparatus 6 7 Preparation of test portions . 7 8 Procedure 7
13、8.1 Description of the stain test . 7 8.2 Preparation of suspension . 7 8.3 Determination of the quantity of dye adsorbed . 8 9 Calculation and expression of results 8 10 Test report . 9 10.1 General . 9 10.2 Required data 9 10.3 Optional data . 9 Annex A (normative) Procedure for the determination
14、of the methylene blue value (MBF) of the 0/0,125 mm fraction 10 Annex B (informative) Test of conformity in relation to a specified MB value . 11 Annex C (normative) Preparation of 10 g/l methylene blue solution 12 Annex D (normative) Procedure for the determination of the methylene blue value of ka
15、olinite (MBK) . 14 Annex E (informative) Example of a test data sheet . 15 BS EN 933-9:2009+A1:2013EN 933-9:2009+A1:2013 (E)EN 933-9:2009+A1:2013 (E) 2 Contents Page Foreword . 3 1 Scope 5 2 Normative references . 5 3 Terms and definitions . 5 4 Principle . 6 5 Reagents 6 6 Apparatus 6 7 Preparation
16、 of test portions . 7 8 Procedure 7 8.1 Description of the stain test . 7 8.2 Preparation of suspension . 7 8.3 Determination of the quantity of dye adsorbed . 8 9 Calculation and expression of results 8 10 Test report . 9 10.1 General . 9 10.2 Required data 9 10.3 Optional data . 9 Annex A (normati
17、ve) Procedure for the determination of the methylene blue value (MBF) of the 0/0,125 mm fraction 10 Annex B (informative) Test of conformity in relation to a specified MB value . 11 Annex C (normative) Preparation of 10 g/l methylene blue solution 12 Annex D (normative) Procedure for the determinati
18、on of the methylene blue value of kaolinite (MBK) . 14 Annex E (informative) Example of a test data sheet . 15 EN 933-9:2009+A1:2013 (E) 3 Foreword This document (EN 933-9:2009+A1:2013) has been prepared by Technical Committee CEN/TC 154 “Aggregates”, the secretariat of which is held by BSI. This Eu
19、ropean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2013, and conflicting national standards shall be withdrawn at the latest by October 2013. Attention is drawn to the possibility that some of the e
20、lements 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 933-9:2009.“ This document includes Amendment 1 approved by CEN on 2013-02-12. The start and finish of text intro
21、duced or altered by amendment is indicated in the text by tags !“. This Standard forms part of a series of tests for geometrical properties of aggregates. Test methods for other properties of aggregates will be covered by parts of the following European Standards: EN 932, Tests for general propertie
22、s of aggregates EN 1097, Tests for mechanical and physical properties of aggregates EN 1367, Tests for thermal and weathering properties of aggregates EN 1744, Tests for chemical properties of aggregates EN 13179, Tests for filler aggregate used in bituminous mixtures The other parts of EN 933 will
23、be: Part 1: Determination of particle size distribution Sieving method Part 2: Determination of particle size distribution Test sieves, nominal size of apertures Part 3: Determination of particle shape Flakiness index Part 4: Determination of particle shape Shape index Part 5: Determination of perce
24、ntage of crushed and broken surfaces in coarse aggregate particles Part 6: Assessment of surface characteristics Flow coefficient for coarse aggregates Part 7: Determination of shell content Percentage of shells in coarse aggregates Part 8: Assessment of fines Sand equivalent test Part 10: Assessmen
25、t of fines Grading of fillers (air jet sieving) BS EN 933-9:2009+A1:2013EN 933-9:2009+A1:2013 (E)EN 933-9:2009+A1:2013 (E) 4 According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belg
26、ium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switze
27、rland, Turkey and the United Kingdom. BS EN 933-9:2009+A1:2013EN 933-9:2009+A1:2013 (E)EN 933-9:2009+A1:2013 (E) 4 According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulga
28、ria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Tur
29、key and the United Kingdom. EN 933-9:2009+A1:2013 (E) 5 1 Scope This standard describes the reference method used for type testing and in cases of dispute for the determination of the methylene blue value of the 0/2 mm fraction in fine aggregates or all-in aggregates (MB). It also describes the refe
30、rence method for the determination of the methylene blue value of the 0/0,125 mm fraction (MBF) in Annex A. For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the suitable reference method has been establishe
31、d. 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 (including any amendments) applies. EN 932-2, Tests for gen
32、eral properties of aggregates Part 2: Methods for reducing laboratory samples EN 932-5, Tests for general properties of aggregates Part 5: Common equipment and calibration 3 Terms and definitions For the purposes of this document the following terms and definitions apply. 3.1 subsample sample obtain
33、ed by means of a sample reduction procedure 3.2 test portion sample used as a whole in a single test 3.3 fines particle size fraction of an aggregate which passes the 0,063 mm sieve 3.4 particle size fraction fraction of an aggregate passing the larger of two sieves and retained on the smaller NOTE
34、The lower limit can be zero. 3.5 constant mass successive weighings after drying at least 1 h apart not differing by more than 0,1 % NOTE In many cases constant mass can be achieved after a test specimen has been dried for a pre-determined period in a specified oven at (110 5) C. Test laboratories c
35、an determine the time required to achieve constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven used. BS EN 933-9:2009+A1:2013EN 933-9:2009+A1:2013 (E)EN 933-9:2009+A1:2013 (E) 6 4 Principle Increments of a solution of methylene blue are added successive
36、ly to a suspension of the test portion in water. The adsorption of dye solution by the test portion is checked after each addition of solution by carrying out a stain test on filter paper to detect the presence of free dye. When the presence of free dye is confirmed the methylene blue value (MB or M
37、BF) is calculated and expressed as grams of dye adsorbed per kilogram of the size fraction tested. NOTE A conformity check, adding a single quantity of dye solution equivalent to a specified limiting value and which may be used as part of a production control process, is described in Annex B. 5 Reag
38、ents 5.1 Dye solution, solution of standard or technical quality methylene blue, (10,0 0,1) g/l (see Annex C). The maximum period of use of the solution shall be 28 days. It shall be stored away from light. 5.2 Distilled or demineralised water. 5.3 Kaolinite, of known methylene blue value (MBK) (see
39、 Annex D). NOTE Kaolinite of MBKvalue between 1 g and 2 g per 100 g of kaolinite is preferable in order to avoid excessive use of dye. 6 Apparatus All apparatus shall conform to the general requirements of EN 932-5. 6.1 Burette, with capacity of either 100 ml or 50 ml and graduation of either 1/10 m
40、l or 1/5 ml, or one 5 ml and one 2 ml micro-pipette. 6.2 Filter paper, quantitative and ash-free ( 0,010 %); 95 g/m2; thickness 0,20 mm; filtration speed 75 s; pore size 8 m. 6.3 Glass rod, length 300 mm; diameter 8 mm. 6.4 Impeller agitator, capable of controlled variable rotation rates up to (600
41、60) min-1with three or four impeller blades of (75 10) mm diameter. NOTE Alternative types of mixer can be used if it can be shown that results obtained agree with results produced using an impeller agitator as specified above. 6.5 Balance, readable to 0,1 % of the mass to be weighed. 6.6 Stopwatch
42、or stopclock, readable to 1 s. 6.7 Test sieve, 2 mm aperture, with guard sieve (if necessary). 6.8 Beaker, glass or plastic, capacity about 1 l or about 2 l. 6.9 Flask, glass, capacity 1 l. 6.10 Ventilated oven, thermostatically controlled to maintain a temperature of (110 5) C. 6.11 Thermometer, re
43、adable to 1 C. BS EN 933-9:2009+A1:2013EN 933-9:2009+A1:2013 (E)EN 933-9:2009+A1:2013 (E) 6 4 Principle Increments of a solution of methylene blue are added successively to a suspension of the test portion in water. The adsorption of dye solution by the test portion is checked after each addition of
44、 solution by carrying out a stain test on filter paper to detect the presence of free dye. When the presence of free dye is confirmed the methylene blue value (MB or MBF) is calculated and expressed as grams of dye adsorbed per kilogram of the size fraction tested. NOTE A conformity check, adding a
45、single quantity of dye solution equivalent to a specified limiting value and which may be used as part of a production control process, is described in Annex B. 5 Reagents 5.1 Dye solution, solution of standard or technical quality methylene blue, (10,0 0,1) g/l (see Annex C). The maximum period of
46、use of the solution shall be 28 days. It shall be stored away from light. 5.2 Distilled or demineralised water. 5.3 Kaolinite, of known methylene blue value (MBK) (see Annex D). NOTE Kaolinite of MBKvalue between 1 g and 2 g per 100 g of kaolinite is preferable in order to avoid excessive use of dye
47、. 6 Apparatus All apparatus shall conform to the general requirements of EN 932-5. 6.1 Burette, with capacity of either 100 ml or 50 ml and graduation of either 1/10 ml or 1/5 ml, or one 5 ml and one 2 ml micro-pipette. 6.2 Filter paper, quantitative and ash-free ( 0,010 %); 95 g/m2; thickness 0,20
48、mm; filtration speed 75 s; pore size 8 m. 6.3 Glass rod, length 300 mm; diameter 8 mm. 6.4 Impeller agitator, capable of controlled variable rotation rates up to (600 60) min-1with three or four impeller blades of (75 10) mm diameter. NOTE Alternative types of mixer can be used if it can be shown th
49、at results obtained agree with results produced using an impeller agitator as specified above. 6.5 Balance, readable to 0,1 % of the mass to be weighed. 6.6 Stopwatch or stopclock, readable to 1 s. 6.7 Test sieve, 2 mm aperture, with guard sieve (if necessary). 6.8 Beaker, glass or plastic, capacity about 1 l or about 2 l. 6.9 Flask, glass, capacity 1 l. 6.10 Ventilated oven, thermostatically controlled to maintain a temperature of (110 5) C. 6.11 Thermometer, readable to 1 C. EN 933-9:2009+A1:
