prEN 933-11
(Main)Tests for geometrical properties of aggregates - Part 11: Classification test for the constituents of coarse recycled aggregate
Tests for geometrical properties of aggregates - Part 11: Classification test for the constituents of coarse recycled aggregate
Specifies a method for the examination of coarse recycled aggregates and for the purposes of identifying and quantifying constituent materials.
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 11: Prüfung zur Einteilung der Bestandteile von rezyklierter grober Gesteinskörnung
Dieses Dokument legt das Referenzverfahren für die Untersuchung von groben recyclierten Gesteinskörnungen mit dem Ziel fest, die relativen Anteile der einzelnen Bestandteile zu bestimmen und abzuschätzen. Dieses Referenzverfahren wird für die Erstprüfung und bei Streitfragen angewendet. Für andere Zwecke, z. B. die werkseigene Produktionskontrolle, können andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang mit dem Referenzverfahren nachgewiesen wurde.
Dieses Verfahren gilt nicht für die in der Normenreihe EN 13055 behandelten leichten Gesteinskörnungen.
In Anhang A wird eine Ergänzung zum Prüfverfahren in Abschnitt 7 festgelegt. Sie eignet sich für Messproben mit geringen Anteilen an schwimmenden Körnern und zielt darauf ab, den Anteil an schwimmenden Körnern mit einer höheren Präzision zu bestimmen.
In Anhang B ist ein Beispiel für ein Prüfdatenblatt angegeben.
Anhang C legt ein Verfahren zum Prüfen der Kornklasse 4/63 mm fest.
Anhang D legt ein Verfahren fest, bei dem der Gehalt an schwimmenden Körnern im Anschluss an das visuelle Sortieren ohne das Eintauchverfahren nach 7.2 visuell geschätzt wird.
In Anhang E wird eine Ergänzung zum Prüfverfahren beschrieben, wonach schwimmende Körner in organische und anorganische Körner getrennt werden.
Anhang A bis Anhang E sind informativ.
Essais relatifs aux caractéristiques géometriques des granulats - Partie 11: Essai de classification des gravillons recyclés selon leur composition
Le présent document spécifie la méthode de référence d’examen des gravillons recyclés afin d’identifier et d’estimer les proportions relatives des différents constituants. La méthode de référence est utilisée pour tous les essais de type initial, de même qu’en cas de litige. D’autres méthodes peuvent être utilisées à d’autres fins, telles que dans le cadre de la maîtrise de la production des granulats, à condition qu’il existe une relation entre ces dernières et la méthode de référence.
La présente méthode ne s’applique pas pour les granulats légers traités dans la série de normes EN 13055.
L'annexe A spécifie un additif au mode opératoire prévu à l'Article 7. Il convient aux prises d'essai contenant de faibles proportions de particules flottantes et vise à déterminer la proportion de particules flottantes avec un niveau de précision plus élevé.
L'annexe B fournit un exemple de feuille d’essai.
L'annexe C spécifie un mode opératoire pour tester une fraction de 4/63 mm.
L'annexe D spécifie une méthode où la teneur en particules flottantes est estimée sur une base visuelle, après le tri visuel, sans la procédure d'immersion prévue au point 7.2.
L'annexe E décrit un additif au mode opératoire afin de séparer les particules flottantes en particules organiques et inorganiques.
Les annexes A, B, C, D et E sont informatives.
Preskusi geometričnih lastnosti agregatov - 11. del: Klasifikacija sestavin grobega recikliranega agregata
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 933-11:2021
01-maj-2021
Preskusi geometričnih lastnosti agregatov - 11. del: Klasifikacija sestavin grobega
recikliranega agregata
Tests for geometrical properties of aggregates - Part 11: Classification test for the
constituents of coarse recycled aggregate
Prüfverfahren für geometrische Eigenschaften von Gesteinskörnungen - Teil 11:
Einteilung der Bestandteile in grober recyclierter Gesteinskörnung
Essais pour déterminer les caractéristiques géométriques des granulats - Partie 11:
Essai de classification des constituants de gravillons recyclés
Ta slovenski standard je istoveten z: prEN 933-11
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
oSIST prEN 933-11:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 933-11:2021
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oSIST prEN 933-11:2021
DRAFT
EUROPEAN STANDARD
prEN 933-11
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 91.100.15 Will supersede EN 933-11:2009
English Version
Tests for geometrical properties of aggregates - Part 11:
Classification test for the constituents of coarse recycled
aggregate
Essais pour déterminer les caractéristiques Prüfverfahren für geometrische Eigenschaften von
géométriques des granulats - Partie 11: Essai de Gesteinskörnungen - Teil 11: Einteilung der
classification des constituants de gravillons recyclés Bestandteile in grober recyclierter Gesteinskörnung
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 154.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 933-11:2021 E
worldwide for CEN national Members.
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prEN 933-11:2021 (E)
Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 6
5 Apparatus . 6
6 Preparation of the test portion . 7
7 Procedure . 8
7.1 General . 8
7.2 Determination of the content of floating particles. 8
7.3 Visual sorting of non-floating particles . 9
8 Calculation and expression of results . 12
9 Test report . 12
9.1 Required data . 12
9.2 Optional data . 13
Annex A (informative) Additive to the test procedure for low proportions of floating
particles . 14
Annex B (informative) Example of a test data sheet . 15
Annex C (informative) Guidance for testing the 4/63 mm fraction . 16
Annex D (informative) Classification test without the immersing procedure . 17
Annex E (informative) Guidance on separating organic and inorganic floating particles. 18
Bibliography . 19
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European foreword
This document (prEN 933-11:2021) has been prepared by Technical Committee CEN/TC 154
“Aggregates”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 933-11:2009.
In comparison with the previous edition, the following technical modifications have been made:
a) The particle size fraction used for the reference test is changed from 4/63 mm to 8/63 mm.
b) Preparation of the test portion does not include sampling or reference to EN 932-1. The
guidance table for minimum test portion mass has been revised. (Clause 6)
c) Procedure has been divided into 7.1 General, 7.2 Determination of the content of floating
particles and 7.3 Visual sorting of non-floating particles. The guidance table with minimum
masses for 1 000 particles has been revised. The table listing non-floating constituents has
been extended. The flow chart describing the test procedure has been revised.
d) The formulae for calculation of the proportion of constituents have been revised (Clause 8).
e) The test data sheet in Annex B has been updated according to the revised procedure and
formulae.
f) Three new informative annexes have been added: Annex C Guidance for testing of a 4/63 mm
fraction, Annex D Classification test without the immersing procedure and Annex E Guidance
on separate floating particles into organic and inorganic.
In addition, the whole document has been updated and clarified.
This document forms part of a series of tests for geometrical properties of aggregates. Test
methods for other properties of aggregates are covered by the following European Standards:
— EN 932 (all parts), Tests for general properties of aggregates
— EN 1097 (all parts), Tests for mechanical and physical properties of aggregates
— EN 1367 (all parts), Tests for thermal and weathering properties of aggregates
— EN 1744 (all parts), Tests for chemical properties of aggregates
— EN 13179 (all parts), Tests for filler aggregate used in bituminous mixtures
The other parts of EN 933, Tests for geometrical properties of aggregates include:
— 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
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— Part 5: Determination of percentage of crushed particles in coarse and all-in natural aggregates
— Part 6: Assessment of surface characteristics — Flow coefficient of aggregates
— Part 7: Determination of shell content — Percentage of shells in coarse aggregates
— Part 8: Assessment of fines — Sand equivalent test
— Part 9: Assessment of fines — Methylene blue test
— Part 10: Assessment of fines — Grading of filler aggregates (air jet sieving)
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1 Scope
This document specifies the reference method for the examination of coarse recycled aggregates
for the purpose of identifying and estimating the relative proportions of constituent materials.
The reference method is used for type testing and in case of dispute. Other methods can be used
for other purposes, such as factory production control, provided that an appropriate working
relationship with the reference method has been established.
This method does not apply to lightweight aggregates covered by the EN 13055 series.
Annex A specifies an additive to the test procedure in Clause 7. It is suitable for test portions with
low proportions of floating particles and is aimed at determining the proportion of floating
particles with a higher precision level.
Annex B provides an example of a test data sheet.
Annex C specifies a procedure for testing a 4/63 mm fraction.
Annex D specifies a method where the content of floating particles is estimated on a visual basis,
after the visual sorting, without the immersing procedure in 7.2.
Annex E describes an additive to the test procedure in order to separate floating particles into
organic and inorganic.
Annexes A, B, C, D and E are informative.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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
EN 933-2, Tests for geometrical properties of aggregates - Part 2: Determination of particle size
distribution - Test sieves, nominal size of apertures
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
aggregate size
d/D
designation of aggregate in terms of lower (d) and upper (D) sieve sizes
5
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Note 1 to entry: This designation accepts the presence of some particles which will be retained on the
upper sieve (oversize) and some which will pass the lower sieve (undersize).
3.2
particle size fraction
d /D
i i
fraction of an aggregate passing the larger (D ) of two sieves and retained on the smaller (d )
i i
3.3
test portion
d /D
0 0
sample used as a whole in a single test
3.4
constant mass
mass determined by successive weighings during drying performed at least 1 h apart and not
differing by more than 0,1 %
Note 1 to entry: In many cases, constant mass can be achieved after a test portion 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.
3.5
floating particles
particles that float in water
4 Principle
The test consists of sorting particles from a test portion of coarse recycled aggregate into
constituents. The sorting is performed in two steps: First, identification of the floating particles,
then, visual sorting of the non-floating particles into constituents, based on their components.
The proportion of each constituent in the test portion is then determined and expressed as a
percentage by mass, except for the proportion of floating particles which is expressed as a volume
by mass.
5 Apparatus
Unless otherwise stated, all apparatus shall conform to the general requirements of EN 932-5.
5.1 Test sieves, 63 mm and 8 mm, conforming to EN 933-2.
5.2 Tightly fitting pan and lid, for the sieves.
5.3 Ventilated oven, thermostatically controlled to maintain a temperature of (40 ± 5) °C or
(110 ± 5) °C.
5.4 Balance or scale, of suitable capacity and readable to 0,1 g.
5.5 Trays.
5.6 Brushes.
6
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5.7 Sieve shaker, optional.
5.8 Watertight tank, of suitable capacity.
5.9 Stirrer.
5.10 Dry soft absorbent rag.
3 3
5.11 Graduated measuring cylinder, of suitable capacity, graduated to 1 cm or 5 cm
(depending on the required precision for volume measurement).
5.12 Plunger, for the graduated cylinder.
6 Preparation of the test portion
The test shall be carried out on aggregate passing the 63 mm sieve and retained on the 8 mm
sieve.
NOTE Informative Annex C gives guidance for testing a 4/63 mm fraction.
Reduce samples in accordance with EN 932-2 to produce a test portion of minimum mass
specified in Table 1.
Table 1 — Guidance on mass of test portion
Upper aggregate size D Minimum test portion mass
mm kg
63 50
32 15
20 5
NOTE Larger test portion masses can be necessary to ensure sufficient precision in
the determination of low proportions of restricted constituents (see Annex A).
Dry the sample to constant mass. In the presence of temperature sensitive constituents, such as
expanded polystyrene or bituminous mixtures, the drying temperature should be (40 ± 5) °C. In
other cases, the sample may be dried at (110 ± 5) °C. Record the drying temperature as T.
Weigh and record the dry mass of the sample as M .
0
Sieve the d/D sample on the test sieves, agitating with sufficient vigour to ensure complete
separation of particles greater than 8 mm.
If overloading occurs, see definition in EN 933-1, the fraction should be divided into smaller
portions and sieved one after the other.
Weigh and record the mass of particles retained on the 63 mm sieve as M , and then discard
>63
them. Weigh and record the mass of particles passing the 8 mm sieve as M<8, and then discard
them.
Record the mass of the obtained 8/63 mm test portion as M .
1
Separate clay lumps and soil from the test portion and retain in a tray. Weigh and record the mass
of clay and soil as M .
cs
7
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7 Procedure
7.1 General
The procedure is divided into two parts: Identification of floating particles by means of immersing
the test portion in a water tank (7.2), and visual sorting of non-floa
...
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