Armourstone, Part 2: Test methods

This document specifies sampling and test methods for natural, artificial and recycled aggregates for use as armourstone. This document specifies the reference methods to be used for type testing and in case of dispute where an alternative method has been used. For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the test method has been established.

Wasserbausteine - Teil 2: Prüfverfahren

Dieses Dokument legt Probenahme  und Prüfverfahren für natürliche, künstliche und wiederaufbereitete Gesteinskörnungen für die Verwendung als Wasserbausteine fest. Dieses Dokument legt die Referenzverfahren fest, die für die Erstprüfung und in Streitfällen, in denen eine alternative Methode verwendet wurde, anzuwenden sind. Für andere Zwecke, speziell im Rahmen der werkseigenen Produktionskontrolle, dürfen andere Verfahren angewendet werden, sofern ein ausreichender Zusammenhang mit den Referenzverfahren nachgewiesen wurde.

Enrochements - Partie 2: Méthodes d'essai

Le présent document prescrit des méthodes d'échantillonnage et d'essai pour les granulats naturels, artificiels et recyclés destinés à être utilisés comme enrochements. Ce document précise les méthodes de référence à utiliser pour les essais de type et en cas de litige lorsqu'une méthode alternative a été utilisée. Pour d'autres fins, en particulier la maîtrise de la production des enrochements, il est permis d'utiliser d'autres méthodes, sous réserve qu'une relation valide et appropriée avec la méthode d'essai de référence ait été établie.

Kamen za obloge pri vodnih zgradbah in drugih gradbenih delih - 2. del: Preskusne metode

Ta evropski standard določa vzorčenje in preskusne metode za naravne, umetne ali reciklirane materiale za uporabo kot kamen za obloge pri vodnih zgradbah in drugih gradbenih delih. Ta evropski standard določa referenčne metode, ki se uporabljajo za tipsko preskušanje in v primeru spora, ko je bila uporabljena alternativna metoda. Za druge namene, zlasti za kontrolo proizvodnje v obratu, se lahko uporabijo druge metode, če obstaja primerna delovna povezava s preskusno metodo.

General Information

Status
Published
Publication Date
04-Jun-2019
Technical Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
05-Jun-2019
Completion Date
05-Jun-2019

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SLOVENSKI STANDARD
SIST EN 13383-2:2019
01-oktober-2019
Nadomešča:
SIST EN 13383-2:2002
Kamen za obloge pri vodnih zgradbah in drugih gradbenih delih - 2. del:
Preskusne metode
Armourstone - Part 2: Test methods
Wasserbausteine - Teil 2: Prüfverfahren
Enrochements - Partie 2: Méthodes d'essai
Ta slovenski standard je istoveten z: EN 13383-2:2019
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
SIST EN 13383-2:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 13383-2:2019
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SIST EN 13383-2:2019
EN 13383-2
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2019
EUROPÄISCHE NORM
ICS 91.100.15 Supersedes EN 13383-2:2002
English Version
Armourstone, Part 2: Test methods

Enrochements - Partie 2: Méthodes d'essai Wasserbausteine - Teil 2: Prüfverfahren

This European Standard was approved by CEN on 13 August 2018.

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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13383-2:2019 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 13383-2:2019
EN 13383-2:2019 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions .................................................................................................................................... 5

4 Methods for sampling .................................................................................................................................... 7

4.1 General ................................................................................................................................................................ 7

4.2 Principles of sampling ................................................................................................................................... 8

4.3 Sampling plan.................................................................................................................................................... 8

4.4 Apparatus ........................................................................................................................................................... 8

4.5 Sampling methods ........................................................................................................................................... 9

4.6 Sample reduction .......................................................................................................................................... 12

4.7 Sample preparation for Micro-Deval test where the appropriate particle size

is not available ............................................................................................................................................... 13

4.8 Marking, packaging and dispatch of samples ..................................................................................... 14

4.9 Sampling registration ................................................................................................................................. 14

5 Determination of the particle size distribution of coarse gradings ........................................... 15

5.1 Principle ........................................................................................................................................................... 15

5.2 Apparatus ........................................................................................................................................................ 15

5.3 Preparation of test portion ....................................................................................................................... 15

5.4 Procedure ........................................................................................................................................................ 16

5.5 Calculation and expression of results ................................................................................................... 16

5.6 Test report ...................................................................................................................................................... 17

6 Determination of the mass distribution of light and heavy gradings ........................................ 17

6.1 Principle ........................................................................................................................................................... 17

6.2 Apparatus ........................................................................................................................................................ 17

6.3 Preparation of test portion ....................................................................................................................... 18

6.4 Procedure ........................................................................................................................................................ 18

6.5 Calculation and expression of results ................................................................................................... 18

6.6 Test report ...................................................................................................................................................... 19

7 Determination of the percentage of pieces of armourstone with a length-to-

thickness ratio greater than 3 ................................................................................................................. 20

7.1 Principle ........................................................................................................................................................... 20

7.2 Apparatus ........................................................................................................................................................ 20

7.3 Preparation of test portion ....................................................................................................................... 21

7.4 Procedure ........................................................................................................................................................ 22

7.5 Calculation and expression of results ................................................................................................... 22

7.6 Test report ...................................................................................................................................................... 23

8 Determination of particle density and water absorption .............................................................. 24

8.1 Principle ........................................................................................................................................................... 24

8.2 Apparatus ........................................................................................................................................................ 24

8.3 Materials .......................................................................................................................................................... 24

8.4 Preparation of test portion ....................................................................................................................... 25

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SIST EN 13383-2:2019
EN 13383-2:2019 (E)

8.5 Test procedure .............................................................................................................................................. 25

8.6 Calculation and expression of results ................................................................................................... 25

8.7 Test report ...................................................................................................................................................... 26

9 Determination of resistance to freezing and thawing ..................................................................... 26

9.1 Principle ........................................................................................................................................................... 26

9.2 Apparatus ........................................................................................................................................................ 26

9.3 Materials .......................................................................................................................................................... 28

9.4 Test portions .................................................................................................................................................. 28

9.5 Procedure ........................................................................................................................................................ 29

9.6 Calculation and expression of results ................................................................................................... 30

9.7 Test report ...................................................................................................................................................... 30

10 Determination of signs of “Sonnenbrand” and disintegration of steel slags .......................... 31

10.1 Principle ........................................................................................................................................................... 31

10.2 Apparatus ........................................................................................................................................................ 31

10.3 Materials .......................................................................................................................................................... 31

10.4 Preparation of test portions ..................................................................................................................... 32

10.5 Procedure ........................................................................................................................................................ 32

10.6 Calculation and expression of results ................................................................................................... 33

10.7 Test report ...................................................................................................................................................... 33

Annex A (informative) Example of a sampling registration ....................................................................... 34

Annex B (informative) Example of a particle size distribution of a coarse grading .......................... 36

Annex C (informative) Example of a mass distribution: reference method ......................................... 37

Annex D (informative) Example method for determination of mass distribution

(employing bulk weighing) ....................................................................................................................... 39

D.1 Principle ........................................................................................................................................................... 39

D.2 Apparatus ........................................................................................................................................................ 39

D.3 Preparation of test portion ....................................................................................................................... 39

D.4 Procedure ........................................................................................................................................................ 39

D.5 Calculation and expression of results ................................................................................................... 39

D.6 Test report ...................................................................................................................................................... 40

Annex E (informative) Density of water ............................................................................................................ 43

Annex F (informative) Precision for determination of particle density and water

absorption (see Clause 8) .......................................................................................................................... 44

Annex G (informative) Guidance on sampling for testing ........................................................................... 45

Annex H (informative) Guidance on sampling from floating plant ......................................................... 50

H.1 General ............................................................................................................................................................. 50

H.2 Sampling scheme 1 ....................................................................................................................................... 50

H.3 Sampling scheme 2 ....................................................................................................................................... 52

Bibliography ................................................................................................................................................................. 55

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SIST EN 13383-2:2019
EN 13383-2:2019 (E)
European foreword

This document (EN 13383-2:2019) has been prepared by Technical Committee CEN/TC 154

“Aggregates”, the secretariat of which is held by BSI.

This document shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by month year of December 2019, and conflicting

national standards shall be withdrawn at the latest by month year of December 2019.

Attention is drawn to the possibility that some of the elements of this document may be the

subject of patent rights. CEN shall not be held responsible for identifying any or all such patent

rights.
This document supersedes EN 13383-2:2002.
In comparison with the previous version, the following changes have been made:

— changes and clarifications to the sampling and sample reduction clauses, including a new

informative Annex on sampling from waterborne plant

— introduction of requirements for sample preparation for the Micro-Deval test previously in

EN 13383-1.

— deletion of an unused wet sieving method for the determination of particle size distribution

of coarse gradings of armourstone

— removal to an informative annex of a previously normative alternative to the reference

method for determination of mass distribution of light and heavy gradings.
Otherwise the majority of the changes from the previous version are editorial.
EN 13383 Armourstone consists of the following parts:
— Part 1: Specifications
— Part 2: Test methods
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SIST EN 13383-2:2019
EN 13383-2:2019 (E)
1 Scope

This document specifies sampling and test methods for natural, artificial and recycled

aggregates for use as armourstone. This document specifies the reference methods to be used

for type testing and in case of dispute where an alternative method has been used. For other

purposes, in particular factory production control, other methods may be used provided that an

appropriate working relationship with the test method has been established.
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 932-1:1996, Tests for general properties of aggregates — Part 1: Methods for sampling

EN 932-5, Tests for general properties of aggregates — Part 5: Common equipment and

calibration

EN 933-1, Tests for geometrical properties of aggregates — Part 1: Determination of particle size

distribution — Sieving method

EN 933-2, Tests for geometrical properties of aggregates — Part 2: Determination of particle size

distribution — Test sieves, nominal size of apertures

EN 933-3, Tests for geometrical properties of aggregates — Part 3: Determination of particle

shape — Flakiness index

EN 1097-1:2011, Tests for mechanical and physical properties of aggregates — Part 1:

Determination of the resistance to wear (micro-Deval)

EN 1097-5, Tests for mechanical and physical properties of aggregates — Part 5: Determination of

the water content by drying in a ventilated oven

ISO 3310-2, Test sieves — Technical requirements and testing — Part 2: Test sieves of perforated

metal plate
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 http://www.iso.org/obp
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SIST EN 13383-2:2019
EN 13383-2:2019 (E)
3.1
armourstone grading
armourstone designation with a nominal lower and upper limit

Note 1 to entry: This designation accepts the presence of undersize and oversize pieces of armourstone.

3.2
nominal lower limit

mass or sieve size in a grading below which the armourstone pieces are considered to be

undersized
3.3
nominal upper limit

mass or sieve size in a grading above which the armourstone pieces are considered to be

oversized
3.4
coarse grading

designation of grading with a nominal upper limit defined by a sieve size ≥ 90 mm and ≤ 250 mm

3.5
light grading

designation of grading with a nominal upper limit defined by a mass ≥ 40 and ≤ 300 kg

3.6
heavy grading
designation of grading with a nominal upper limit defined by a mass ≥ 1 000 kg
3.7
fragment

aggregate pieces in the finest fraction of coarse gradings or the lightest fraction of light and

heavy gradings for which the particle size distribution or mass distribution requirements apply

Note 1 to entry: For further information on grading, see EN 13383–1:—, Annex B .
3.8
batch

production quantity, delivery quantity, partial delivery quantity (railway wagon-load, lorry-load,

ship's cargo) or a stockpile produced at one time under conditions that are presumed uniform

3.9
sampling plan

procedure of allocation, withdrawal and preparation of a sample or samples from a material to

yield the required information
3.10
sampling increment

quantity of material taken from a batch by one operation of the sampling apparatus

3.11
bulk sample
aggregation of the sampling increments
Under preparation. Stage at the time of publication: FprEN 13383–1:2017.
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SIST EN 13383-2:2019
EN 13383-2:2019 (E)
3.12
representative sample

sample created by taking sampling increments according to sampling plan, which makes it likely

that the quality of this sample corresponds to that of the batch
3.13
subsample

sample obtained from sampling increments or a bulk sample by means of a sample reduction

procedure
3.14
sampler

individual or a number of individuals working as a team, or an organisation, taking samples on a

routine basis
3.15
length

maximum dimension of a piece of armourstone as defined by the greatest distance apart of two

parallel planes tangential to the stone’s surface
3.16
thickness

minimum dimension of a piece of armourstone as defined by the least distance apart of two

parallel planes tangential to the stone’s surface
3.17
constant mass

successive weighings after drying at least 24 h apart 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.
4 Methods for sampling
4.1 General

This clause describes methods for obtaining samples of armourstone from preparation and

processing plants including stocks and from silos, stockpiles and deliveries.

NOTE It is preferable for armourstone to be sampled at the quarry or during the loading for transport

(or unloading).

The aim of sampling is to obtain samples that are representative of the average properties of the

batch.

The methods described are also suitable for obtaining sampling increments, which are to be

tested separately.
Methods to be used for sample reduction are also given.
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SIST EN 13383-2:2019
EN 13383-2:2019 (E)
4.2 Principles of sampling

Proper and careful sampling and sample transport is a prerequisite for an analysis that will give

reliable results. The correct use of the specified apparatus and methods helps to avoid biased

sampling inclusive the possibility of human bias introduced by visual selection. Sampling

variation caused by the heterogeneity of the batch shall be reduced to an acceptable level by

taking an adequate number of sampling increments.

NOTE For guidance on numbers and sizes of samples and test portions for testing armourstone as

specified in this document, see Annex G.

Sampling increments are selected at random from all parts of the batch that the samples are to

represent. Armourstone from which no sampling increment can be taken (because it is not

accessible, or for some other practical reason) shall not be considered to be part of the batch

that is represented by the samples. For example, if sampling increments are taken from

armourstone discharged from a silo, the samples represent the armourstone that has been

discharged, not the armourstone remaining in the silo.
The sampler shall be informed of the aim of the sampling.
4.3 Sampling plan

A sampling plan shall be prepared, prior to sampling, taking into account the grading type, the

nature and size of the batch, the local circumstances and the purposes of sampling. It shall

include:
a) the type of the armourstone;
b) the aim of the sampling including a list of the properties to be tested;
c) the identification of the sampling points;
d) the mass or number of stones of sampling increments;
e) the number of sampling increments;
f) the sampling apparatus to be used;

g) the methods of sampling and sample reduction with reference to the clauses of this

document;
h) the relevant marking, packaging and dispatch of the samples.
4.4 Apparatus
4.4.1 Apparatus for sampling
4.4.1.1 Grab, fitted to either a crane or a hydraulic machine.
4.4.1.2 Bucket or fork, fitted to a wheeled loader or a hydraulic machine.
4.4.1.3 Truck, for receiving and/or transport of samples.

4.4.1.4 Lifting equipment and lifting aids, for stones that cannot be moved manually.

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SIST EN 13383-2:2019
EN 13383-2:2019 (E)
4.4.2 Apparatus for sample reduction and transport

4.4.2.1 A floor area, upon which samples can be deposited and tested. The floor shall be

sufficiently clean and close-textured to be able to distinguish and recover the material of the

sample from the floor material.
4.4.2.2 Shovels.

4.4.2.3 Rectangular sampling buckets, of sufficient size and of width not less than three

times the nominal upper grading limit.
4.4.2.4 Suitable plates and wires, for sample reduction.

4.4.2.5 Containers for transport, such as bags, buckets or other suitable containers.

4.5 Sampling methods
4.5.1 General
Regulations for safety and ergonomics shall be followed.

WARNING Some sampling methods will inevitably involve the samplers working close to

processing plant and moving vehicles. Those involved in the planning and execution of sampling

should work closely with the operational management to ensure safe working practices.

Mechanically selected gradings should preferably be sampled from a stationary conveyor belt or

from the stream of material. Sampling increments should be taken at regular intervals

throughout the period the batch is in motion. Gradings of which the pieces of armourstone are

individually handled may be sampled at the most convenient location.

Sampling from static batches should be avoided wherever possible since it is difficult to satisfy

the principle of taking sampling increments at random from all parts of the batch, and hence

segregation is likely to cause the sampling to produce biased results.

During sampling, grabs or other extraction equipment shall be filled to a minimum such that the

degree of filling does not adversely affect the representative nature of the sample or sampling

increment.

4.5.2 Sampling, for the determination of particle size distribution, mass distribution and

shape characteristics
4.5.2.1 Sampling of material in bucket conveyors, bucket loaders, or grabs

Each sampling increment shall consist of the entire contents of a grab or bucket.

When this gives too large a sampling increment, it should be reduced by one of the methods

described in 4.6.
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SIST EN 13383-2:2019
EN 13383-2:2019 (E)
4.5.2.2 Sampling at belt and chute discharge points

The period during which the sampling is to be done shall be divided into a number of equal

intervals, and a sampling increment shall be taken in the middle of each interval.

A sample increment shall be taken by catching the discharge stream in a loader bucket, making

sure that the complete cross-section of the stream of material is intercepted. At the beginning

and the ending of the sampling, the edge of the bucket shall pass the cross-section of the stream

as fast as possible.

Where appropriate, sampling should only be started after a preliminary run to ensure that

possible irregularities in the pass do not lead to unrepresentative samples.
Samples may also be taken at the discharge from a screen by the same method.
4.5.2.3 Sampling from stationary conveyor belts

Sampling should only be started after a preliminary run to ensure that possible irregularities in

the pass do not lead to unrepresentative samples.

All sampling increments shall be taken at the same sampling point. In every sampling increment,

all material between two cross-sections shall be taken. The distance between the cross-sections

shall be determined by the required quantity of the sampling increment.
4.5.2.4 Sampling from a silo
Sampling at a silo outlet shall be carried out in accordance with 4.5.2.2.

During filling of a silo the material segregates and as a result the finer material tends to be found

in the centre of the silo with the coarser material along the wall sides. Alternating loading and

discharging of a silo leads to a complex segregation pattern in the silo and this segregation

causes variations in the particle size distribution of the discharged material. The number of

sampling increments should be related to this variation.
4.5.2.5 Sampling from stockpiles

When sampling from a segregated stockpile, from which material is being collected for

transporting, a sampling increment shall be taken from the material which is being taken from

the stockpile. For this purpose, the contents of one or more loader buckets, grabs, lorries or any

other means of handling or transport shall be taken. The period during which the sampling is

done shall be divided into a number of equal intervals and a sampling increment shall be taken

in the middle of each interval.

If at the time of sampling no material of a segregated stockpile is undergoing routine removal,

the removal of material shall be simulated so as not to distort the representativity of the

sampling increment wit
...

SLOVENSKI STANDARD
oSIST prEN 13383-2:2017
01-marec-2017
Kamen za obloge pri vodnih zgradbah in drugih gradbenih delih - 2. del:
Preskusne metode
Armourstone, Part 2: Test methods
Wasserbausteine - Teil 2: Prüfverfahren
Enrochements - Partie 2: Méthodes d'essai
Ta slovenski standard je istoveten z: prEN 13383-2
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
oSIST prEN 13383-2:2017 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 13383-2:2017
---------------------- Page: 2 ----------------------
oSIST prEN 13383-2:2017
DRAFT
EUROPEAN STANDARD
prEN 13383-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2017
ICS 91.100.15 Will supersede EN 13383-2:2002
English Version
Armourstone, Part 2: Test methods

Enrochements - Partie 2: Méthodes d'essai Wasserbausteine - Teil 2: Prüfverfahren

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13383-2:2017 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 13383-2:2017
prEN 13383-2:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions .................................................................................................................................... 5

4 Methods for sampling .................................................................................................................................... 7

4.1 General ................................................................................................................................................................ 7

4.2 Principles of sampling ................................................................................................................................... 7

4.3 Sampling plan.................................................................................................................................................... 8

4.4 Apparatus ........................................................................................................................................................... 8

4.5 Sampling methods ........................................................................................................................................... 9

4.6 Sample reduction .......................................................................................................................................... 12

4.7 Sample preparation for Micro-Deval test where the appropriate particle size

is not available ............................................................................................................................................... 13

4.8 Marking, packaging and dispatch of samples ..................................................................................... 14

4.9 Sampling registration ................................................................................................................................. 14

5 Determination of the particle size distribution of coarse gradings ........................................... 14

5.1 Principle ........................................................................................................................................................... 14

5.2 Apparatus ........................................................................................................................................................ 15

5.3 Preparation of test portion ....................................................................................................................... 15

5.4 Procedure ........................................................................................................................................................ 15

5.5 Calculation and expression of results ................................................................................................... 16

5.6 Test report ...................................................................................................................................................... 16

6 Determination of the mass distribution of light and heavy gradings ........................................ 17

6.1 Principle ........................................................................................................................................................... 17

6.2 Apparatus ........................................................................................................................................................ 17

6.3 Preparation of test portion ....................................................................................................................... 17

6.4 Procedure ........................................................................................................................................................ 18

6.5 Calculation and expression of results ................................................................................................... 18

6.6 Test report ...................................................................................................................................................... 19

7 Determination of the percentage of pieces of armourstone with a length-to-

thickness ratio greater than 3 ................................................................................................................. 19

7.1 Principle ........................................................................................................................................................... 19

7.2 Apparatus ........................................................................................................................................................ 19

7.3 Preparation of test portion ....................................................................................................................... 20

7.4 Procedure ........................................................................................................................................................ 21

7.5 Calculation and expression of results ................................................................................................... 22

7.6 Test report ...................................................................................................................................................... 22

8 Determination of particle density and water absorption .............................................................. 23

8.1 Principle ........................................................................................................................................................... 23

8.2 Apparatus ........................................................................................................................................................ 23

8.3 Materials .......................................................................................................................................................... 24

8.4 Preparation of test portion ....................................................................................................................... 24

8.5 Test procedure .............................................................................................................................................. 24

8.6 Calculation and expression of results ................................................................................................... 24

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oSIST prEN 13383-2:2017
prEN 13383-2:2017 (E)

8.7 Test report ...................................................................................................................................................... 25

9 Determination of resistance to freezing and thawing ..................................................................... 25

9.1 Principle ........................................................................................................................................................... 25

9.2 Apparatus ........................................................................................................................................................ 26

9.3 Materials .......................................................................................................................................................... 28

9.4 Test portions .................................................................................................................................................. 28

9.5 Procedure ........................................................................................................................................................ 29

9.6 Calculation and expression of results ................................................................................................... 30

9.7 Test report ...................................................................................................................................................... 30

10 Determination of signs of “Sonnenbrand” and disintegration of steel slags .......................... 31

10.1 Principle ........................................................................................................................................................... 31

10.2 Apparatus ........................................................................................................................................................ 31

10.3 Materials .......................................................................................................................................................... 31

10.4 Preparation of test portions ..................................................................................................................... 32

10.5 Procedure ........................................................................................................................................................ 32

10.6 Calculation and expression of results ................................................................................................... 33

10.7 Test report ...................................................................................................................................................... 33

Annex A (informative) Example of a sampling registration ....................................................................... 34

Annex B (informative) Example of a particle size distribution of a coarse grading .......................... 36

Annex C (informative) Example of a mass distribution: reference method ......................................... 37

Annex D (informative) Example method for determination of mass distribution

(employing bulk weighing) ....................................................................................................................... 39

D.1 Principle ........................................................................................................................................................... 39

D.2 Apparatus ........................................................................................................................................................ 39

D.3 Preparation of test portion ....................................................................................................................... 39

D.4 Procedure ........................................................................................................................................................ 39

D.5 Calculation and expression of results ................................................................................................... 39

D.6 Test report ...................................................................................................................................................... 40

Annex E (informative) Density of water ............................................................................................................ 43

Annex F (informative) Precision for determination of particle density and water

absorption (see Clause 8) .......................................................................................................................... 44

Annex G (informative) Guidance on sampling for testing ........................................................................... 45

Annex H (informative) Guidance on sampling from floating plant ......................................................... 50

H.1 General ............................................................................................................................................................. 50

H.2 Sampling scheme 1 ....................................................................................................................................... 50

H.3 Sampling scheme 2 ....................................................................................................................................... 51

Bibliography ................................................................................................................................................................. 54

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European foreword

This document (prEN 13383-2:2017) 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 13383-2:2002.

This document has been prepared under a mandate given to CEN by the European Commission

and the European Free Trade Association.
In comparison with the previous version, the following changes have been made:

• changes and clarifications to the sampling and sample reduction clauses, including a new

informative Annex on sampling from waterborne plant

• introduction of requirements for sample preparation for the Micro-Deval test previously in

EN 13383-1.

• deletion of an unused wet sieving method for the determination of particle size distribution

of coarse gradings of armourstone

• removal to an informative annex of a previously normative alternative to the reference

method for determination of mass distribution of light and heavy gradings.
Otherwise the majority of the changes from the previous version are editorial.
EN 13383 Armourstone consists of the following parts:
Part 1: Specifications
Part 2: Test methods
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1 Scope

This European Standard specifies sampling and test methods for natural, artificial and recycled

aggregates for use as armourstone. This European Standard specifies the reference methods to

be used for type testing and in case of dispute where an alternative method has been used. For

other purposes, in particular factory production control, other methods may be used provided

that an appropriate working relationship with the test method has been established.

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 the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

EN 932-1:1996, Tests for general properties of aggregates — Part 1: Methods for sampling

EN 932-5, Tests for general properties of aggregates - Part 5: Common equipment and calibration

EN 933-1, Tests for geometrical properties of aggregates - Part 1: Determination of particle size

distribution - Sieving method

EN 933-2, Tests for geometrical properties of aggregates - Part 2: Determination of particle size

distribution - Test sieves, nominal size of apertures

EN 933-3, Tests for geometrical properties of aggregates - Part 3: Determination of particle shape -

Flakiness index

EN 1097-1:2011, Tests for mechanical and physical properties of aggregates - Part 1:

Determination of the resistance to wear (micro-Deval)

EN 1097-5, Tests for mechanical and physical properties of aggregates - Part 5: Determination of

the water content by drying in a ventilated oven

ISO 3310-2, Test sieves — Technical requirements and testing — Part 2: Test sieves of perforated

metal plate
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
armourstone grading
armourstone designation with a nominal lower and upper limit

Note 1 to entry: This designation accepts the presence of undersize and oversize pieces of armourstone.

3.2
nominal lower limit

mass or sieve size in a grading below which the armourstone pieces are considered to be

undersized
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3.3
nominal upper limit

mass or sieve size in a grading above which the armourstone pieces are considered to be

oversized
3.4
coarse grading

designation of grading with a nominal upper limit defined by a sieve size ≥ 90 mm and

≤ 250 mm
3.5
light grading

designation of grading with a nominal upper limit defined by a mass ≥ 40 and ≤ 300 kg

3.6
heavy grading
designation of grading with a nominal upper limit defined by a mass ≥ 1000 kg
3.7
fragment

aggregate pieces in the finest fraction of coarse gradings or the lightest fraction of light and

heavy gradings for which the particle size distribution or mass distribution requirements apply

Note 1 to entry: For further information on grading, see FprEN 13383–1:2017, Annex B.

3.8
batch

production quantity, delivery quantity, partial delivery quantity (railway wagon-load, lorry-load,

ship's cargo) or a stockpile produced at one time under conditions that are presumed uniform

3.9
sampling plan

procedure of allocation, withdrawal and preparation of a sample or samples from a material to

yield the required information
3.10
sampling increment

quantity of material taken from a batch by one operation of the sampling apparatus

3.11
bulk sample
aggregation of the sampling increments
3.12
representative sample

sample created by taking sampling increments according to sampling plan, which makes it likely

that the quality of this sample corresponds to that of the batch
3.13
subsample

sample obtained from sampling increments or a bulk sample by means of a sample reduction

procedure
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3.14
sampler

individual or a number of individuals working as a team, or an organisation, taking samples on a

routine basis
3.15
length

maximum dimension of a piece of armourstone as defined by the greatest distance apart of two

parallel planes tangential to the stone’s surface
3.16
thickness

minimum dimension of a piece of armourstone as defined by the least distance apart of two

parallel planes tangential to the stone’s surface
3.17
constant mass

successive weighings after drying at least 24 h apart 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.
4 Methods for sampling
4.1 General

This clause describes methods for obtaining samples of armourstone from preparation and

processing plants including stocks and from silos, stockpiles and deliveries.

NOTE It is preferable for armourstone to be sampled at the quarry or during the loading for transport

(or unloading).

The aim of sampling is to obtain samples that are representative of the average properties of the

batch.

The methods described are also suitable for obtaining sampling increments, which are to be

tested separately.
Methods to be used for sample reduction are also given.
4.2 Principles of sampling

Proper and careful sampling and sample transport is a prerequisite for an analysis that will give

reliable results. The correct use of the specified apparatus and methods helps to avoid biased

sampling inclusive the possibility of human bias introduced by visual selection. Sampling

variation caused by the heterogeneity of the batch shall be reduced to an acceptable level by

taking an adequate number of sampling increments.

NOTE For guidance on numbers and sizes of samples and test portions for testing armourstone as

specified in this document, see Annex G.
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Sampling increments are selected at random from all parts of the batch that the samples are to

represent. Armourstone from which no sampling increment can be taken (because it is not

accessible, or for some other practical reason) shall not be considered to be part of the batch

that is represented by the samples. For example, if sampling increments are taken from

armourstone discharged from a silo, the samples represent the armourstone that has been

discharged, not the armourstone remaining in the silo.
The sampler shall be informed of the aim of the sampling.
4.3 Sampling plan

A sampling plan shall be prepared, prior to sampling, taking into account the grading type, the

nature and size of the batch, the local circumstances and the purposes of sampling. It shall

include:
a) the type of the armourstone;
b) the aim of the sampling including a list of the properties to be tested;
c) the identification of the sampling points;
d) the mass or number of stones of sampling increments;
e) the number of sampling increments;
f) the sampling apparatus to be used;

g) the methods of sampling and sample reduction with reference to the clauses of this

European Standard;
h) the relevant marking, packaging and dispatch of the samples.
4.4 Apparatus
4.4.1 Apparatus for sampling
4.4.1.1 Grab, fitted to either a crane or a hydraulic machine.
4.4.1.2 Bucket or fork, fitted to a wheeled loader or a hydraulic machine.
4.4.1.3 Truck, for receiving and/or transport of samples.

4.4.1.4 Lifting equipment and lifting aids, for stones that cannot be moved manually.

4.4.2 Apparatus for sample reduction and transport

4.4.2.1 A floor area, upon which samples can be deposited and tested. The floor shall be

sufficiently clean and close-textured to be able to distinguish and recover the material of the

sample from the floor material.
4.4.2.2 Shovels.

4.4.2.3 Rectangular sampling buckets, of sufficient size and of width not less than three

times the nominal upper grading limit.
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4.4.2.4 Suitable plates and wires, for sample reduction.

4.4.2.5 Containers for transport, such as bags, buckets or other suitable containers.

4.5 Sampling methods
4.5.1 General
Regulations for safety and ergonomics shall be followed.

WARNING Some sampling methods will inevitably involve the samplers working close to

processing plant and moving vehicles. Those involved in the planning and execution of sampling

should work closely with the operational management to ensure safe working practices.

Mechanically selected gradings should preferably be sampled from a stationary conveyor belt or

from the stream of material. Sampling increments should be taken at regular intervals

throughout the period the batch is in motion. Gradings of which the pieces of armourstone are

individually handled may be sampled at the most convenient location.

Sampling from static batches should be avoided wherever possible since it is difficult to satisfy

the principle of taking sampling increments at random from all parts of the batch, and hence

segregation is likely to cause the sampling to produce biased results.

During sampling, grabs or other extraction equipment shall be filled to a minimum such that the

degree of filling does not adversely affect the representative nature of the sample or sampling

increment.

4.5.2 Sampling, for the determination of particle size distribution, mass distribution and

shape characteristics
4.5.2.1 Sampling of material in bucket conveyors, bucket loaders, or grabs

Each sampling increment shall consist of the entire contents of a grab or bucket.

When this gives too large a sampling increment, it should be reduced by one of the methods

described in 4.6.
4.5.2.2 Sampling at belt and chute discharge points

The period during which the sampling is to be done shall be divided into a number of equal

intervals, and a sampling increment shall be taken in the middle of each interval.

A sample increment shall be taken by catching the discharge stream in a loader bucket, making

sure that the complete cross-section of the stream of material is intercepted. At the beginning

and the ending of the sampling the edge of the bucket shall pass the cross-section of the stream

as fast as possible.

Where appropriate, sampling should only be started after a preliminary run to ensure that

possible irregularities in the pass do not lead to unrepresentative samples.
Samples may also be taken at the discharge from a screen by the same method.
4.5.2.3 Sampling from stationary conveyor belts

Sampling should only be started after a preliminary run to ensure that possible irregularities in

the pass do not lead to unrepresentative samples.
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All sampling increments shall be taken at the same sampling point. In every sampling increment

all material between two cross-sections shall be taken. The distance between the cross-sections

shall be determined by the required quantity of the sampling increment.
4.5.2.4 Sampling from a silo
Sampling at a silo outlet shall be carried out in accordance with 4.5.2.2.

During filling of a silo the material segregates and as a result the finer material tends to be found

in the centre of the silo with the coarser material along the wall sides. Alternating loading and

discharging of a silo leads to a complex segregation pattern in the silo and this segregation

causes variations in the particle size distribution of the discharged material. The number of

sampling increments should be related to this variation.
4.5.2.5 Sampling from stockpiles

When sampling from a segregated stockpile, from which material is being collected for

transporting, a sampling increment shall be taken from the material which is being taken from

the stockpile. For this purpose, the contents of one or more loader buckets, grabs, lorries or any

other means of handling or transport shall be taken. The period during which the sampling is

done shall be divided into a number of equal intervals and a sampling increment shall be taken

in the middle of each interval.

If at the time of sampling no material of a segregated stockpile is undergoing routine removal,

the removal of material shall be simulated so as not to distort the representativity of the

sampling increment with the segregation effects associated with the initiation of stockpile

extraction. The sampling increments shall be taken at random or at equal distances around the

stockpile or part thereof to be sampled.
When sampling from a non-segregated stockpile, a sampling
...

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