Bitumen and bituminous binders - Sampling bituminous binders

This European Standard specifies methods of sampling bituminous binders, to determine the average quality of the material under examination and/or to determine deviations from average quality.

Bitumen und bitumenhaltige Bindemittel - Probenahme bitumenhaltiger Bindemittel

Dieses Dokument beschreibt Verfahren für die Probenahme bitumenhaltiger Bindemittel für die Bestimmung der durchschnittlichen Qualität des zu untersuchenden Prüfguts und/oder für die Bestimmung der Abweichung von der durchschnittlichen Qualität.

Bitumes et liants bitumineux - Echantillonage des liants bitumineux

Le présent document prescrit des méthodes pour l'échantillonnage des liants bitumineux, pour établir la qualité moyenne du produit sous examen et/ou pour déterminer les écarts existants par rapport à sa qualité moyenne.

Bitumen in bitumenska veziva - Vzorčenje bitumenskih veziv

Ta evropski standard določa metode vzorčenja bitumenskih veziv za določitev povprečne kakovosti preučevanega materiala in/ali za določitev odstopanj od povprečne kakovosti.

General Information

Status
Published
Public Enquiry End Date
14-Feb-2010
Publication Date
01-Aug-2012
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
10-May-2012
Due Date
15-Jul-2012
Completion Date
02-Aug-2012

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 58:2012
01-september-2012
1DGRPHãþD
SIST EN 58:2005
%LWXPHQLQELWXPHQVNDYH]LYD9]RUþHQMHELWXPHQVNLKYH]LY
Bitumen and bituminous binders - Sampling bituminous binders
Bitumen und bitumenhaltige Bindemittel - Probenahme bitumenhaltiger Bindemittel
Bitumes et liants bitumineux - Echantillonage des liants bitumineux
Ta slovenski standard je istoveten z: EN 58:2012
ICS:
75.140 Voski, bitumni in drugi naftni Waxes, bituminous materials
proizvodi and other petroleum products
91.100.50 Veziva. Tesnilni materiali Binders. Sealing materials
SIST EN 58:2012 en,de

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

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SIST EN 58:2012
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SIST EN 58:2012
EUROPEAN STANDARD
EN 58
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2012
ICS 91.100.50 Supersedes EN 58:2004
English Version
Bitumen and bituminous binders - Sampling bituminous binders

Bitumes et liants bitumineux - Échantillonage des liants Bitumen und bitumenhaltige Bindemittel - Probenahme

bitumineux bitumenhaltiger Bindemittel
This European Standard was approved by CEN on 7 January 2012.

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, 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 NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 58:2012: E

worldwide for CEN national Members.
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SIST EN 58:2012
EN 58:2012 (E)
Contents Page

Foreword ..............................................................................................................................................................3

1 Scope ......................................................................................................................................................4

2 Terms and definitions ...........................................................................................................................4

3 Safety precautions .................................................................................................................................5

4 Fundamentals of sampling ...................................................................................................................5

5 Sample size ............................................................................................................................................6

6 Choice of sampling method ..................................................................................................................6

7 Number of samples................................................................................................................................8

8 Arrangements, equipment and methods of sampling .......................................................................9

9 Further treatment of samples ............................................................................................................ 13

Annex A (informative) Example of a form for reporting on the sampling of bituminous binders –

Unique sample identification ............................................................................................................. 27

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SIST EN 58:2012
EN 58:2012 (E)
Foreword

This document (EN 58:2012) has been prepared by Technical Committee CEN/TC 336 “Bituminous binders”,

the secretariat of which is held by AFNOR.

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 September 2012, and conflicting national standards shall be

withdrawn at the latest by September 2012.

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 58:2004.

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, 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.
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SIST EN 58:2012
EN 58:2012 (E)
1 Scope

This European Standard specifies methods of sampling bituminous binders, to determine the average quality

of the material under examination and/or to determine deviations from average quality.

2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
composite sample
sample made up by the mixing of several spot samples

Note 1 to entry: A composite sample is regarded as a representative sample if the spot samples are taken according

to a sampling plan which makes it probable that the composition of the composite sample approaches that of the material

as closely as possible.
2.2
divided sample

sample formed by dividing a spot, composite or representative sample into several similar parts by appropriate

means
2.3
flowing material

material which flows in a transport pipeline or out of the drainline of a storage container

2.4
laboratory sample
sample intended for laboratory tests
2.5
layer sample

upper, middle or lower layer spot sample taken at a specific depth in a stationary material, usually in order to

detect segregation in large storage containers
2.6
main stream sample

sample taken from the outlet stream of a container, such that the entire cross-section of the outlet stream is

included
2.7
material under examination

entire quantity of the bituminous binder of which the properties are to be assessed

Note 1 to entry: "Material under examination" is termed simply "material" in the body of this document.

2.8
side-stream sample
sample taken from the outlet stream by means of a sampling probe
2.9
spot sample
sample, taken in a single operation at a single place and time

Note 1 to entry: If it can be assumed that the material is homogeneous, a spot sample is regarded as a representative

sample. If the material is not homogeneous, a spot sample is only regarded as representative of a limited region around

the sampling point.
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SIST EN 58:2012
EN 58:2012 (E)
2.10
stationary material

material in a storage container when all valves are closed and there is no flowing in the container

2.11
surface sample
spot sample taken at less than 5 cm below the upper surface
2.12
test sample

sample produced by treatment or subdivision of a laboratory sample during preparation in the laboratory of the

sample for individual tests
2.13
vertical straight-through sample

sample taken by drawing a sampling device through the total depth of the material under examination and

thereby including all layers of the material
3 Safety precautions

The safety precautions given in this clause represent good practice and shall be applied in all cases where

they are not in conflict with local or other regulations which shall be followed.

The list of safety precautions given in this clause is not necessarily exhaustive and they should be considered

in conjunction with relevant national safety regulations and/or recognised safety code(s) for the petroleum

industry.

a) All regulations concerning entry into hazardous areas shall be observed rigorously.

b) Equipment shall be maintained adequately.
Regular inspections of equipment should be carried out by a competent person.

c) All equipment and access facilities shall be checked to ensure that they are adequate for safe working

before commencement of sampling.

d) Metallic sampling devices used in flammable atmospheres shall be constructed only from non-ferrous

metal(s).

e) Cords used as components of sampling devices shall be constructed only from vegetable fibre(s), e.g.

manilla or sisal; for emulsions, the cord used shall not absorb water from the emulsion.

NOTE Attention is drawn to the situation that, for cords made from man-made fibres, it is possible for an operator to

build up a dangerous level of electrostatic charge on his person, if he is not earthed and wearing insulating gloves, and

that certain man-made fibres will melt or dissolve in hot bitumen.

f) Precautions shall be taken to prevent the breathing of bitumen vapours during sampling operations.

g) For samples taken from the main stream, the sampling device shall be selected such that sampling can

be performed without pressure.
4 Fundamentals of sampling

4.1 Correct sampling techniques are a prerequisite if meaningful test results are to be obtained.

4.2 The person taking the sample shall be experienced in the methods to be employed.

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SIST EN 58:2012
EN 58:2012 (E)

4.3 If the sample is to be subdivided, a suitably large representative sample shall be taken and divided into

the required number of divided samples.

4.4 A sampling report shall be prepared and signed by the person taking the sample.

The sampling report shall include:
a) name and address of the manufacturer,
b) name and address of the supplier (if different from manufacturer),
c) object of sampling (batch number, storage container, pipe identification),
d) nature and type of material sampled,
e) date and time of sampling,
f) name of the sampler,
g) unique identification of the sample(s),
h) number and amount of samples,
i) sampling method used,
j) reference to this European Standard,

k) any deviation, by agreement or otherwise, from the procedure described in the standard,

l) any special observations.

A prepared form shall be used for the sampling report (for example, see Annex A); a copy of the sampling

report shall be placed with each divided sample. Sampling reports shall not be put into sample containers.

Because of the variety of materials for which the same container vehicle or storage tank may be used,

account should always be taken of possible contamination by residues, deposits or solvents. For this reason,

it is relevant to enter data in the report on the previous history of the container vehicle or storage tank.

5 Sample size
Each divided sample should consist of at least 0,5 kg material.

NOTE The required size of a laboratory sample is dependent upon the nature and extent of the tests to be carried

out.
6 Choice of sampling method
The sampling method to be used depends upon:
a) nature, quantity and temperature of the material under examination,

b) number, type and size of the containers or cans from which the sample is to be taken,

c) whether the sample is to be taken from a stationary or a flowing material.
Arrangements, equipment and methods of sampling are described in Clause 8.
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SIST EN 58:2012
EN 58:2012 (E)

If samples shall be taken frequently from a large volume liquid material container, sampling appliances such

as sampling valves, sampling probes or three-way cocks can conveniently be installed permanently.

Otherwise, liquid test materials shall be sampled by immersion techniques, for example, by weighted sampling

cans or bottom closing sampling tubes; materials fluid at low temperature can be sampled from drums or

containers of up to 2 m capacity by means of open sampling tubes. Table 1 gives an informative guideline for

sampling devices.

Viscous, plastic and semi-solid material shall be sampled using tools of the kind described in 8.4, semi-solid to

brittle material by means of hand-operated tools described in 8.5 and granular material or lumps according to

8.5 and 8.6.

Sampling from the main stream by disconnecting the pipe linking a container vehicle to a storage tank shall

not be carried out.
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SIST EN 58:2012
EN 58:2012 (E)
Table 1 — Sampling methods for material liquid
at either high or low temperatures in pipelines, containers or cans
Sampling from
Sampling method Sampling from containers of capacity
pipelines
3 3 3
According to Main Side > 50 m to > 2 m to ≤ 2 m and
> 800 m
3 3
subclause stream stream 800 m 50 m cans
sampling
8.1.2 - + - - - -
probe
Sampling
using from 8.1.3 - - + + + -
permanently sampling
8.1.4 - + - - - -
installed valve
equipment
3-way
8.1.5 + - - - - -
valve
weighted
sampling 8.2.1 - - + + + (+)
can
surface
- - - - + -
sampling 8.2.2
can
bottom
Sampling
closing
using 8.2.3 - - - (+) + +
sampling
immersion
tube
methods
open
sampling 8.2.4 - - - - - 0
tube
vertical
straight-
8.2.5 - - - - + +
through
can
Sampling
from
directly from spraying 8.3 + - - - - -
installations
equipment
Key
+ usable
(+) limited use
0 only usable for materials fluid at low temperature
- not applicable
7 Number of samples

The number of samples taken shall be dependent upon the size and form of the container and for deliveries in

cans and lumps upon the number of those in a delivery; the number of samples to be taken from a container

shall be as given for each sampling method in Clause 8.

For deliveries in cans and lumps, the number of cans or lumps from which samples are to be taken shall

conform to Table 2. Initially, one sample from each can or lump shall be tested. If this test shows deviation

from the specification, the remaining samples shall be tested.
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SIST EN 58:2012
EN 58:2012 (E)

If sampling is intended to check homogeneity (segregation) in stationary liquid material, at least three layer

samples (upper layer, middle layer and lower layer) shall be taken. They shall not be mixed to form a

composite sample.

If, in exceptional circumstances, it is desired to assess the average quality from layer samples, the geometry

of the container shall be taken into account.
Table 2 — Number of cans or lumps from which samples are to be taken
Total number of cans or lumps (n) Number of cans or lumps sampled
2 to 8 2
9 to 27 3
28 to 64 4
65 to 125 5
126 to 216 6
217 to 343 7
344 to 512 8
513 to 729 9
730 to 1 000 10
n , rounded to the nearest integer above,
over 1 000
where n is the total number of cans or lumps
8 Arrangements, equipment and methods of sampling
8.1 Sampling using permanently installed systems
8.1.1 Necessary drawing off before sampling.

IMPORTANT — Depending on the type of system (e.g. valve) used to take the sample and/or on the

design of the unit (e.g. sampling pipe) from which the material is sampled, a draw-off shall be

performed to ensure that the sample is a relevant and representative part of the material.

Each sampling point shall be assessed in order to define the minimum volume to be discarded and

thus to fulfil the requirement listed above; assessment shall be reported in an appropriate document.

More precisely, when a material draw-off is required (e.g. from a valve with dead volume, a long

sampling pipe…), the quantity/volume of material to be taken prior sampling shall be accurately

evaluated.

Any drawn off material or any sample after use, may be recycled on site or elsewhere.

NOTE It is preferable to use valves or sampling systems with zero or minimal dead volume. With valves having no

dead volume, it is not necessary for any material to be drawn off before sampling.

WARNING — The sampling step on a running line shall be performed in accordance with all the

appropriate safety and health practices.
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SIST EN 58:2012
EN 58:2012 (E)

8.1.2 Sampling probe. If samples shall be taken from a flowing material, it is convenient to take side-

stream samples using a sampling probe installed in the delivery pipe. The sampling probe shall be installed in

an upward-sloping section of the pipe or on the pressure side of the pump, or in the case of a gravity-fed

system in a completely full section of pipe. The internal diameter of the sampling probe shall be less than 1/8

of the internal diameter of the delivery pipe, and its opening shall be approximately central in the pipe facing

upstream. The sampling probe shall be equipped with a stop-valve. For very viscous material, it may be

advantageous to arrange for the movable parts to be totally immersed in the material. Figures 1 (for pipes

without pressure) and 2 show examples of suitable arrangements; the arrangements shown in Figures 1 and 2

shall be equipped with a protecting box in the sampling device.
Necessity to draw off material should be assessed (see 8.1.1 above).

If a representative sample is required, either sampling can be continuous, or spot samples can be taken by

opening the stop valve at equal time intervals throughout the period of flow.

This method is usable for flowing material. For a well mixed material, a spot sample, usually taken from the

middle third of the material, can be regarded as a representative sample. For material which is not well mixed,

a sample taken during the whole period of flow, or a composite sample formed from at least three spot

samples, shall be used.

8.1.3 Sampling valve in container walls. Sampling valves in the walls of heated containers can

advantageously be installed so that the movable parts and the pipework are as far as possible within the

heated material. Figure 3 shows a suitable arrangement. For this arrangement, a simple cover shall be

provided for the sampling device.
Necessity to draw off material should be assessed (see 8.1.1 above).
The sample shall be drawn off into a suitable clean container or bottle.

This method is suitable for all liquid materials, whether hot or cold, and especially for containers larger than

50 m . For a well-mixed material, a spot sample, usually from the middle third, can be regarded as a

representative sample.

For material which is not well mixed, layer samples shall be taken from at least the top, middle and lower

thirds.

8.1.4 Sampling valve in delivery pipes (see Clause 6). To allow side-stream samples to be taken from

narrow delivery pipes, a sampling valve can be installed in place of a sampling probe in the supply line. The

sampling valve shall be installed in an upward-sloping section of the supply line or on the outlet of the pump.

For systems flowing under their hydrostatic head, the sampling valve shall be installed on the pressure side of

the supply pipe.
Necessity to draw off material should be assessed (see 8.1.1 above).

If a representative sample is to be taken, either the sample shall be taken continuously or se

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