ISO 16534:2012
(Main)Thermal insulating products for building applications — Determination of compressive creep
Thermal insulating products for building applications — Determination of compressive creep
This International Standard specifies the equipment and procedures for determining the compressive creep of specimens under various conditions of stress. It is applicable to thermal insulating products.
Produits isolants thermiques destinés aux applications du bâtiment — Détermination du fluage en compression
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 16534
First edition
2012-05-15
Thermal insulating products for building
applications — Determination of
compressive creep
Produits isolants thermiques destinés aux applications du bâtiment —
Détermination du fluage en compression
Reference number
ISO 16534:2012(E)
©
ISO 2012
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ISO 16534:2012(E)
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ii © ISO 2012 – All rights reserved
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ISO 16534:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 3
5 Apparatus . 3
6 Test specimens . 4
6.1 Selection of test specimens . 4
6.2 Dimensions of test specimens . 4
6.3 Number of test specimens . 5
6.4 Preparation of test specimens . 5
6.5 Conditioning of test specimens . 5
7 Procedure . 5
7.1 Test conditions . 5
7.2 Stress selection . 6
7.3 Test procedure . 6
7.4 Duration of test . 7
8 Calculation and expression of results . 7
9 Accuracy of measurement . 7
10 Test report . 7
Annex A (normative) Calculation method .10
Annex B (informative) Example of a linear regression analysis .13
Bibliography .16
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ISO 16534:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
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. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16534 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the
built environment, Subcommittee SC 1, Test and measurement methods.
ISO 16534 includes the original EN 1606 prepared by Technical Committee CEN/TC 88 “Thermal insulating
materials and products”, with the following clauses modified to reflect the conditions for tropical countries:
— Clause 6.5: Conditioning of test specimens;
— Clause 7.1: Test conditions;
— Clause 10: Test report.
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ISO 16534:2012(E)
Introduction
ISO 16534 is one of a series of existing European Standards on test methods which were adopted by ISO. This
group of International Standards comprises the following group of interrelated standards:
ISO Title Respective
EN
standard
12344 Thermal insulating products for building applications — Determination of EN 12089
bending behaviour
12968 Thermal insulation products for building applications — Determination of the EN 13495
pull-off resistance of external thermal insulation composite systems (ETICS)
(foam block test)
29465 Thermal insulating products for building applications — Determination of length EN 822
and width
29466 Thermal insulating products for building applications — Determination of EN 823
thickness
29467 Thermal insulating products for building applications — Determination of EN 824
squareness
29468 Thermal insulating products for building applications — Determination of flatness EN 825
29469 Thermal insulating products for building applications — Determination of EN 826
compression behaviour
29470 Thermal insulating products for building applications — Determination of the EN 1602
apparent density
29471 Thermal insulating products for building applications — Determination of EN 1603
dimensional stability under constant normal laboratory conditions (23 degrees
C/50 % relative humidity)
29472 Thermal insulating products for building applications — Determination of EN 1604
dimensional stability under specified temperature and humidity conditions
29764 Thermal insulating products for building applications — Determination of EN 1605
deformation under specified compressive load and temperature conditions
29765 Thermal insulating products for building applications — Determination of tensile EN 1607
strength perpendicular to faces
29766 Thermal insulating products for building applications — Determination of tensile EN 1608
strength parallel to faces
29767 Thermal insulating products for building applications — Determination of short- EN 1609
term water absorption by partial immersion
29768 Thermal insulating products for building applications — Determination of linear EN 12085
dimensions of test specimens
29769 Thermal insulating products for building applications — Determination of EN 12430
behaviour under point load
29770 Thermal insulating products for building applications — Determination of EN 12431
thickness for floating-floor insulating products
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ISO 16534:2012(E)
29771 Thermal insulating materials for building applications — Determination of EN 13820
organic content
29803 Thermal insulation products for building applications — Determination of the EN 13497
resistance to impact of external thermal insulation composite systems (ETICS)
29804 Thermal insulation products for building applications — Determination of the EN 13494
tensile bond strength of the adhesive and of the base coat to the thermal
insulation material
29805 Thermal insulation products for building applications — Determination of the EN 13496
mechanical properties of glass fibre meshes
16534 Thermal insulating products for building applications — Determination of EN 1606
compressive creep
16535 Thermal insulating products for building applications — Determination of long- EN 12087
term water absorption by immersion
16536 Thermal insulating products for building applications — Determination of long- EN 12088
term water absorption by diffusion
16537 Thermal insulating products for building applications — Determination of shear EN 12090
behaviour
16546 Thermal insulating products for building applications —Determination of freeze- EN 12091
thaw resistance
16544 Thermal insulating products for building applications — Conditioning to moisture EN 12429
equilibrium under specified temperature and humidity conditions
16545 Thermal insulating products for building applications — Determination of EN 13793
behaviour under cyclic loading
A further group of existing European Standards on test methods for products used to insulate building equipment
and industrial installations comprises the following group of interrelated International Standards:
ISO 12623 Thermal insulating products for building equipment and industrial installations — EN 13472
Determination of short-term water absorption by partial immersion of preformed
pipe insulation
ISO 12624 Thermal insulating products for building equipment and industrial installations — EN 13468
Determination of trace quantities of water soluble chloride, fluoride, silicate,
sodium ions and pH
ISO 12628 Thermal insulating products for building equipment and industrial installations — EN 13467
Determination of dimensions, squareness and linearity of preformed pipe
insulation
ISO 12629 Thermal insulating products for building equipment and industrial installations — EN 13469
Determination of water vapour transmission properties of preformed pipe
insulation
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INTERNATIONAL STANDARD ISO 16534:2012(E)
Thermal insulating products for building applications —
Determination of compressive creep
1 Scope
This International Standard specifies the equipment and procedures for determining the compressive creep of
specimens under various conditions of stress. It is applicable to thermal insulating products.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 29469, Thermal insulating products for building applications — Determination of compression behaviour
ISO 29768, Thermal insulating products for building applications — Determination of linear dimensions of
test specimens
ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method
for the determination of repeatability and reproducibility of a standard measurement method
3 Terms and definitions
For the purposes of this document, the following definitions apply.
3.1
thickness
linear dimension measured perpendicular to the length and width plane
3.1.1
thickness
d
original product thickness
3.1.2
thickness
d
s
initial thickness of the test specimen
3.1.3
thickness
d
L
thickness of the test specimen under the basic compressive stress of the loading device (‘dead weight’)
3.1.4
thickness
d
0
thickness of the test specimen 60 s after the beginning of the loading process
3.1.5
thickness
d
t
thickness of the test specimen at a given time, t
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ISO 16534:2012(E)
3.2
compressive stress
σ
c
ratio of the compressive force to the initial surface area of the cross-section of the test specimen
3.3
deformation
X
reduction in thickness of the test specimen
3.4
relative deformation
ε
ratio of the deformation of the test specimen X, and its thickness d , measured in the direction of loading
s
3.5
compressive creep
X
ct
increase in deformation of the test specimen under a constant stress with time under specified conditions of
temperature and humidity
X = X − X
ct t 0
where
X is the deformation at time t;
t
X is the initial deformation (after 60 s from the beginning of loading).
0
An illustration of the different thicknesses and deformations is given in Figure 1.
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ISO 16534:2012(E)
Key
a thickness
b time, t
c deformation curve
d reference value for deformation measurements
L
1 ‘Dead weight’ of the loading device (<10 % of the smallest stress chosen for the creep test).
2 Load applied in the compressive creep test.
NOTE In the illustration, d is used as a reference value for deformation measurements. If d is used as the reference
L s
value, the illustration can be used, omitting the column for d (see 7.3).
L
Figure 1 — Illustration of the different thicknesses and deformations
4 Principle
The compressive creep is determined by measuring the increase in deformation of a specimen under constant
compressive stress and specified conditions of temperature, humidity and time.
5 Apparatus
5.1 Loading device, consisting of two flat platens, one of which shall be movable, arranged so that they
compress the specimen in a vertical direction. The movable platen shall be guided in such a manner as to be
self-aligning. The platens shall be capable of being loaded smoothly and without distortion so that, during the
test, the static stress does not change by more than ± 5 %.
5.2 Measuring device (e.g. dial gauge), capable of determining the distance between the two platens, i.e.
the deformation of the specimen, to an accuracy of 0,01 mm.
5.3 Suitable damping measures, to minimize the effects of external vibration (e.g. substantial foundation of
the apparatus support).
Examples of the testing apparatus are given in Figure 2.
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ISO 16534:2012(E)
a) b)
Key
1 displacement transducer or dial gauge 4 test specimen
2 loading bridge 5 support beam
3 load distribution plate (movable, self-aligning) 6 loading by weights
Figure 2 — Examples of test apparatus
6 Test specimens
6.1 Selection of test specimens
The specimens for determining the compressive creep shall be taken from the same sample, with the same
preparation as the specimens used for the compression test as specified in EN 826.
The method of selecting the specimens shall be as specified in the relevant product standard.
NOTE In the absence of a product standard or any other technical specification, the method of selection of the test
specimens can be agreed between parties.
6.2 Dimensions of test specimens
The thickness of specimens shall be equal to the original product thickness. The width of the specimens shall
not be less than their thickness. Products with facings or integrally moulded skins which are retained in use
shall be tested with these faces or skins intact.
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ISO 16534:2012(E)
Test specimens shall not be layered to produce a greater thickness for testing.
The specimens shall be cut squarely and have sides with the following recommended dimensions:
— 50 mm × 50 mm; or
— 100 mm × 100 mm; or
— 150 mm × 150 mm; or
— 200 mm × 200 mm or
— 300 mm × 300 mm.
The dimensions of specimens shall be the same as used in the compression test as described in ISO 29469.
These are specified in the relevant product standard or agreed between parties.
The linear dimensions shall be determined in accordance with ISO 29768, to an accuracy of 0,5 %.
The tolerance and parallelism and flatness between the upper and lower face of the specimen shall not be
greater than 0,5 % of its side length, with a maximum of 0,5 mm.
If the specimen is not flat, it shall be ground flat or an adequate coating shall be applied to prepare the surface
for the test. Where it is coated, no significant creep should occur in the coating or it shall be taken into account
by deducting the creep of the coating.
6.3 Number of test specimens
The number of specimen
...
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