EN 933-9:2009+A1:2013
(Main)Tests for geometrical properties of aggregates - Part 9: Assessment of fines - Methylene blue test
Tests for geometrical properties of aggregates - Part 9: Assessment of fines - Methylene blue test
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 reference 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 established.
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 9: Beurteilung von Feinanteilen-Methylenblau-Verfahren
Diese Norm legt das für die Erstprüfung und in Streitfällen anzuwendende Referenzverfahren für die Bestim-mung des Methylenblau Werts für die Kornklasse 0/2 mm in feinen Gesteinskörnungen oder Korngemischen fest. Ferner wird in Anhang A ein Referenzverfahren für die Bestimmung des Methylenblau Werts für die Kornklasse 0/0,125 mm (MBF) festgelegt. Für andere Zwecke, speziell im Rahmen der werkseigenen Produktions¬kontrolle, dürfen andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang zum Referenzverfahren nachgewiesen wurde.
Essais pour déterminer les caractéristiques géométriques des granulats - Partie 9 : Qualification des fines - Essai au bleu de méthylène
La présente norme décrit la méthode de référence utilisée pour les essais de type initiaux et, en cas de litige, pour déterminer la valeur de bleu de méthylène de la fraction 0/2 mm dans les sables ou les graves (MB). Elle décrit aussi la méthode de référence permettant de déterminer la valeur de bleu de méthylène de la fraction 0/0,125 mm (MBF) dans l'Annexe A. Dans les autres cas, en particulier pour la maîtrise de la production en usine, d’autres méthodes peuvent être utilisées sous réserve qu’une corrélation appropriée avec la méthode de référence ait été établie.
Preskusi geometričnih lastnosti agregatov - 9. del: Ugotavljanje finih delcev - Preskus z metilen modrim (vključno z dopolnilom A1)
Ta standard opisuje referenčno metodo, ki se uporablja za tipsko preskušanje in v primeru spora za ugotavljanje vrednosti metilen modrega deleža 0/2 mm v finih agregatih ali nesepariranih agregatih (MB). Prav tako opisuje referenčno metodo za določanje vrednosti metilen modrega deleža 0/0,125 mm (MBF) v dodatku A. Za druge namene, zlasti za kontrolo proizvodnje v obratu, se lahko uporabijo druge metode, če obstaja primerna delovna povezava z referenčno metodo.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2013
3UHVNXVLJHRPHWULþQLKODVWQRVWLDJUHJDWRY GHO 8JRWDYOMDQMHILQLKGHOFHY
3UHVNXV]PHWLOHQPRGULP YNOMXþQR]GRSROQLORP$
Tests for geometrical properties of aggregates - Part 9: Assessment of fines - Methylene
blue test
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 9:
Beurteilung von Feinanteilen-Methylenblau-Verfahren
Essais pour déterminer les caractéristiques géométriques des granulats - Partie 9 :
Qualification des fines - Essai au bleu de méthylène
Ta slovenski standard je istoveten z: EN 933-9:2009+A1:2013
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 933-9:2009+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2013
ICS 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 déterminer les caractéristiques géométriques Prüfverfahren für geometrische Eigenschaften von
des granulats - Partie 9 : Qualification des fines - Essai au Gesteinskörnungen - Teil 9: Beurteilung von Feinanteilen-
bleu de méthylène 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 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 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 the 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, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 933-9:2009+A1:2013: E
worldwide for CEN national Members.
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
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 of the methylene blue value (MB )
F
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
kaolinite (MB ) . 14
K
Annex E (informative) Example of a test data sheet . 15
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 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 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 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 933-9:2009."
This document includes Amendment 1 approved by CEN on 2013-02-12.
The start and finish of text introduced 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 properties 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 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 percentage 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: Assessment of fines — Grading of fillers (air jet sieving)
According to the CEN/CENELEC Internal Regulations, the national standards organisations 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, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
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 reference method for the determination of the methylene blue
value of the 0/0,125 mm fraction (MB ) in Annex A. For other purposes, in particular factory
F
production control, other methods may be used provided that an appropriate working relationship with
the suitable reference method has been established.
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 general 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 obtained 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 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 can determine the time required to
achieve constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven
used.
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 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 MB ) is calculated and
F
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 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 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 (MB ) (see Annex D).
K
NOTE Kaolinite of MB value between 1 g and 2 g per 100 g of kaolinite is preferable in order to avoid
K
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 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/m ; thickness 0,20 mm; filtration speed
75 s; pore size 8 µm.
6.3 Glass rod, length 300 mm; diameter 8 mm.
-1
6.4 Impeller agitator, capable of controlled variable rotation rates up to (600 ± 60) min with 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 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.
6.12 Spatula.
6.13 Desiccator.
7 Preparation of test portions
!The laboratory samples shall be reduced in accordance with EN 932-2 to produce two subsamples,
each containing at least 200 g of 0/2 mm particle size. Sieve each subsample on a 2 mm sieve
protected if necessary by a guard sieve, and using a sieve brush to ensure effective separation and
collection of all particles in the 0/2 mm fraction. Discard any particles retained on the 2 mm sieve.
The subsamples may be pre-dried at less than 45 °C in order to facilitate the sieving operation.
Weigh one of the subsamples as M. Dry it to constant mass, then weigh it again as M’. Determine and
record the water content of this subsample as W (%) = 100x(M - M’)/M’. Discard this subsample.
NOTE The determination of the water content can be achieved by other means than drying in a ventilated
oven, such as drying in a microwave for example.
Take the other subsample and, if necessary, achieve further reduction in accordance with EN 932-2
to obtain a test portion of mass at least [200x(1 + W/100)] g. The mass of the test portion shall be
larger than [200x(1 + W/100)] g but not of an exact predetermin
...
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