INTERNATIONAL IS0

STANDARD 11127-l
First edition
1993-l 2-l 5
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Preparation of steel substrates before

application of paints and related
products - Test methods for non-metallic
blast-cleaning abrasives -
Part 1:
Sampling

Prdparation des subjectiles d’acier avant application de peintures et de

produits assimiks - M&hodes d’essai pour abrasifs non m&alliques
destines 4 la pkparation par projection -
Partie 1: khan tillonnage

Reference number
IS0 11127-1:1993(E)

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 IS0 11127-1:1993(E)
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Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.

Draft International Standards adopted by the technical committees are

circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.

International Standard IS0 11127-l was prepared by Technical Committee

lSO/TC 35, Paints and varnishes, Subcommittee SC 12, Preparation of
steel substrates before application of paints and related products.

IS0 11127 consists of the following parts, under the general title Prep-
aration of steel substrates before application of paints and related
products - Test methods for non-metallic blast-cleaning abrasives:

- Part 9: Sampling

- Part 2: Determination of particle size distribution

- Part 3: Determination of apparent density

- Part 4: Assessment of hardness by a glass slide test

- Part 5: Determination of moisture

- Part 6: Determination of water-soluble contaminants by conductivity

measurement

- Part 7: Determination of water-soluble chlorides

- Part 8: Determination of abrasive mechanical properties

0 IS0 1993
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
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Case Postale 56 l CH-1211 Geneve 20 * Switzerland
Printed in Switzerland

ii
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 0 IS0 IS0 11127-1:1993(E)

At the time of publication of this part of IS0 ‘I 1127, part 8 was in course
of preparation.
Annexes A and B of this part of IS0 11127 are for information only.

III
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 INTERNATIONAL STANDARD 0 IS0 IS0 11127-1:1993(E)

Preparation of steel substrates before application of

paints and related products - Test methods for
non-metallic blast-cleaning abrasives -
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Part 1:
Sampling

1 Scope 2.3 mixed sample: A sample obtained by mixing a

number of single samples.
This is one of a number of parts of IS0 11127 dealing
with the sampling and testing of non-metallic abras- 2.4 reduced sample: A sample obtained by re-
ives for blast-cleaning. duction of a mixed sample.

The types of non-metallic abrasive and require- NOTE 1 In order to obtain a sample quantity which is
ments on each are contained in IS0 11126. suitable for testing, all reduced samples but one are dis-
carded after each reduction; the reduction procedure is then
The IS0 11126 and IS0 11127 series have been repeated if necessary on the sample retained.
drafted as a coherent set of International Standards
on non-metallic blast-cleaning abrasives. Information 2.5 test sample: A reduced sample that comprises
on all parts of both series is given in annex B. a mass or volume sufficient for testing, portions of
which are immediately used for testing.
This part of IS0 11127 specifies a method for the
sampling of non-metallic blast-cleaning abrasives from
consignments and for the subdivision of the sample
into quantities suitable for undertaking the appropriate 3 Apparatus
test methods specified in other parts of IS0 11127.

3.1 Sample thief, made from seamless steel tubing

of inside diameter approximately 25 mm and length
2 Definitions approximately 800 mm. The tube shall be pointed at
one end and have a “T” handle at the other end.
For the purposes of this part of IS0 11127, the fol- Holes shall be bored in a straight line, lengthways
lowing definitions apply. along the tube, and spaced at 50 mm intervals. The
diameter of the holes shall be determined by the size
of the particles to be sampled and shall be approxi-
2.1 total quantity: The overall quantity of the
mately three times the size of the largest particle.
abrasive to be tested (for example the quantity of a
consignment) for which the sampling procedure is to NOTE 2 It is normally sufficient to use holes 10 mm in
be considered as representative. diameter for non-metallic abrasives.

2.2 single sample: A sample obtained from the total

quantity by a single sampling operation. This sample 3.2 Sample divider, riffler or other equipment
is not immediately used for testing. suitable for splitting a sample into parts.

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 IS0 11127-1:1993(E) 0 IS0

4 Procedure 4.3 Reduction of sample size

Subdivide the mixed sample either mechanically, for

example using a riffler-type sampling divider (3.21, or
4.1 Sampling of consigments
manually. Unless otherwise specified or agreed, dis-
Depending on the quantity of abrasive to be tested card one of the reduced samples obtained after each
subdivision (see figure 1). Continue the operation until
and the condition of the consignment (packaged or
unpackaged), the sampling procedure may be carried a test sample of appropriate size is obtained.
out manually or mechanically. Take samples as uni-
formly distributed as possible over the total quantity 4.4 Test sample
of the consignment, where appropriate, using the
sampling thief (3.1). The number of single samples to The quantity of test sample needed will depend on
be taken shall be as specified in table 1. the individual test method and is given in the appro-
priate part of IS0 11127 (see annex B).

Table 1 - Number of single samples to be taken Be sure to store the sample in a sealed container until
from a consigment required. Remix the test sample before taking
I portions for testing to ensure uniformity is maintained.
Total quantity Number of single Do not remix used portions with remaining sample.
tonnes samples
5 Sample identification
< 50 5
50 to 100 IO Each sample shall be clearly identified as to its origin.
> 100 15 Test samples shall carry at least the following infor-
mation:
Guidance on sampling from stockpiles and transpor- a) all details necessary to identify the product in ac-
tation units is given in annex A. cordance with the appropriate part of IS0 11126
(see annex B), if applicable;

4.2 Preparation of the mixed sample b) the consignment identification details, e.g. sup-
plier’s name, order number, date of despatch/re-
Pour all the single samples obtained as described in ceipt, etc.;
4.1 into a suitable container and mix them until a uni-
form distribution of all particle sizes within the mixed c) any product traceability reference which relates to
sample can be expected. the unit sampled.

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 IS0 11127-1:1993(E)

1 Total q;lontity 1

I I
Single Single
sample sample
I I

w 1st subdivision

2nd s&division

n th subdivision

Discarded

Figure 1 - Scheme for sampling and division of samples

(example beginning with five single samples, followed by subdivision)
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 IS0 11127-1:1993(E)

Annex A
(informative)

Guidance on sampling from stockpiles or transportation units”

A.1 Scope above the sampling point aids in preventing further

segregation. In sampling stockpiles of fine aggregate
In some situations it is necessary to sample aggre- the outer layer, which may have become segregated,
gates that have been stored in stockpiles or loaded should be removed and the sample taken from the
into rail cars, barges, or trucks. In such cases the material beneath. Sampling tubes approximately
procedure should ensure that segregation does not 30 mm min. by 2 m min. in length may be inserted
introduce a serious bias in the results. into the pile at random locations to extract a minimum
of five increments of material to form the sample.
A.2 Sampling from stockpiles
A.3 Sampling from transportation units
A.2.1 In sampling material from stockpiles it is very
difficult to ensure unbiased samples, due to the seg- In sampling coarse aggregates from railroad cars or
regation which often occurs when material is stock- barges, effort should be made to enlist the services
piled, with coarser particles rolling to the outside base of power equipment capable of exposing the material
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of the pile. For coarse or mixed coarse and fine ag- at various levels and random locations. Where power
gregate, every effort should be made to enlist the equipment is not available, a common procedure re-
services of power equipment to develop a separate, quires excavation of three or more trenches across
small sampling pile composed of materials drawn the unit at points that will, from visual appearance,
from various levels and locations in the main pile, after give a reasonable estimate of the characteristics of
which several increments may be combined to com- the load. The trench bottom should be approximately
pose the field sample. If necessary to indicate the level, at least 0,3 m in width and in depth below the
degree of variability existing within the main pile, surface. A minimum of three increments from ap-
separate samples should be drawn from separate proximately equally spaced points along each trench
areas of the pile. should be taken by pushing a shovel downward into
the material. Coarse aggregate in trucks should be
A.2.2 Where power equipment is not available, sampled in essentially the same manner as for rail
samples from stockpiles should be made up of at cars or barges, except for adjusting the number of in-
least three increments taken from the top third, at the crements according to the size of the truck. For fine
mid-point, and from the bottom third of the volume aggregate in transportation units, sampling tubes as
of the pile. A board pushed vertically into the pile just described in A.2 may be used to extract an appropri-
ate number of increments to form the sample.

1) Abstracted from ASTM D 75-l 987, Practices for sampling aggregates.

4
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 IS0 11127-1:1993(E)

Annex B
(informative)

International Standards for non-metallic blast-cleaning abrasives

Requirements and test methods for non-metallic IS0 11127 will consist of the following parts, under
blast-cleaning abrasives are contained in IS0 11126 the general title:
and IS0 11127 respectively.
Preparation of steel substrates before application
IS0 11126 will consist of the following parts under of paints and related products - Test methods for
the general title: non-metallic b/as t-cleaning abrasives

Preparation of steel substrates before application - Part 7: Sampling

of paints and related products - Specifications
for non-metallic blast-cleaning abrasives - Part 2: Determination of particle size distri-
bution
- Part 7: Genera/ introduction and classification
- Part 3: Determination of apparent density
- Part 2: Silica sand
- Part 4: Assessment of hardness by a glass
- Part 3: Copper refinery slag slide test

- Part 4: Coal furnace slag - Part 5: Determination of moisture

- Part 5: Nickel refinery slag - Part 6: Determination of water-soluble con-

taminants by conductivity measurement
- Part 6: Iron furnace slag
- Part 7: Determination of water-soluble chlor-
- Part 7: Fused aluminium oxide ides

- Part 8: Olivine sand - Part 8: Determination of abrasive mechanical

properties
- Part 9: Staurolite

- Part 10: Garnet --`,,,`-`-`,,`,,`,`,,`---

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 IS0 11127-1:1993(E)
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UDC 667.648.1:621.7.023:621.921.2/.3:620.11
Descriptors: paints, varnishes, substrates, steel products, blast-cleaning, abrasives, non-metallic abrasives, tests, sampling.

Price based on 5 paaes

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