ISO 8336:2017

Fibre-cement flat sheets — Product specification and test methods

ISO 8336:2017 specifies methods for the inspection and testing of fibre-cement flat sheets and provides the acceptance conditions for their use in one or more of the following applications: - external wall and ceiling finishes; - internal wall and ceiling finishes; - internal and external backing sheets. Products covered by this document can be used for other purposes, provided they comply with the appropriate national or international application code or standard. NOTE 1 ISO 8336:2017 does not apply to sheets for fire protection purposes. NOTE 2 ISO 8336:2017 does not include calculations for installation design requirements, wind uplift or water proofing of the installed sheets. NOTE 3 ISO 8336:2017 does not apply to the following products: - boards of Portland or equivalent cement reinforced with fibrous wood particles; - fibre-reinforced boards of calcium silicate or cement for thermal insulation or fire protection; - sheets containing asbestos fibre reinforcement; - sheets containing steel fibre reinforcement; - fibre-cement roofing slates.

Plaques planes en fibres-ciment — Spécification des produits et méthodes d'essai

General Information

• Status: Published
• Publication Date: 13-Jun-2017
• ICS: 91.100.40 - Products in fibre-reinforced cement
• Technical Committee: ISO/TC 77 - Products in fibre reinforced cement
• Drafting Committee: ISO/TC 77 - Products in fibre reinforced cement
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 13-Sep-2022

Relations

• Revises: ISO 8336:2009 - Fibre-cement flat sheets — Product specification and test methods
• Effective Date: 20-Oct-2012
• Consolidated By: ISO 19014-2:2022 - Earth-moving machinery — Functional safety — Part 2: Design and evaluation of hardware and architecture requirements for safety-related parts of the control system
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 8336
Third edition
2017-06
Fibre-cement flat sheets — Product
specification and test methods
Plaques planes en fibres-ciment — Spécification des produits et
méthodes d’essai
Reference number
ISO 8336:2017(E)
©
ISO 2017

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ISO 8336:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
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ISO 8336:2017(E)

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 4
5 Requirements . 5
5.1 General . 5
5.2 Sheet classifications . 5
5.2.1 Category A . 5
5.2.2 Category B. 6
5.2.3 Category C . 6
5.3 Composition and manufacture . 6
5.3.1 General. 6
5.3.2 Reinforcement fibre . 6
5.3.3 Cement . 6
5.3.4 Manufacture . 6
5.4 Appearance and finish . 6
5.5 Dimensions and tolerances . 6
5.5.1 Nominal length and width . 6
5.5.2 Thickness . 7
5.5.3 Tolerances on nominal dimensions and shape . 7
5.6 Physical requirements and characteristics . 8
5.6.1 General. 8
5.6.2 Modulus of rupture . 9
5.6.3 Apparent density . 9
5.6.4 Moisture movement . 9
5.6.5 Water permeability . 9
5.6.6 Water vapour transmission .10
5.6.7 Thermal conductivity . .10
5.6.8 Freeze-thaw performance .10
5.6.9 Heat-rain performance .10
5.6.10 Warm water performance .10
5.6.11 Soak-dry performance .10
5.6.12 Resistance to mould growth .10
5.6.13 Resistance to nail head pull-through .11
5.6.14 Saturated shear bond performance .11
5.6.15 Surface burning characteristics .11
5.7 Fire properties . .11
5.8 Product performance .11
6 Evaluation of conformity .12
6.1 General .12
6.2 Type testing .12
6.2.1 General.12
6.2.2 Initial type testing .13
6.2.3 Further type testing .13
6.3 Quality control system.14
6.3.1 General.14
6.3.2 Acceptance tests .14
6.3.3 Equipment .15
6.3.4 Raw materials and components .15
6.3.5 Product testing and evaluation . .15
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ISO 8336:2017(E)

6.3.6 Non-conforming products .15
6.4 Inspection of a consignment of finished products .15
7 Test requirements .15
7.1 General .15
7.2 Dimensional and geometrical tests .15
7.2.1 General.15
7.2.2 Number of measurements .16
7.3 Physical performance tests .16
7.3.1 Modulus of rupture .16
7.3.2 Apparent density .17
7.3.3 Moisture movement test .17
7.3.4 Water permeability .18
7.3.5 Freeze-thaw test .18
7.3.6 Heat-rain test .18
7.3.7 Warm water test .19
7.3.8 Soak-dry test .19
7.3.9 Mould testing .19
7.3.10 Nail head pull-through .20
7.3.11 Saturated shear bond test .20
8 Marking .20
Annex A (normative) Consignment and inspection sampling .21
Annex B (normative) Statistical method for determining the corresponding wet values
or revised dry specifications for the MOR when making the dry method of test or
when tested prior to coating for quality control purposes .22
Annex C (normative) Dimensional measurement and geometrical testing procedure .26
Annex D (normative) Test method for the determination of fibre-cement sheet modulus of
rupture (bending strength) .30
Annex E (normative) Test method for the determination of the apparent density of fibre-
cement sheets .34
Annex F (normative) Test method for the determination of moisture movement
characteristic of fibre-cement sheets .36
Annex G (normative) Test method for the determination of water permeability of fibre-
cement sheets .38
Annex H (normative) Test method for the evaluation of freeze-thaw performance of fibre-
cement sheets .39
Annex I (normative) Test method for the evaluation of heat-rain performance of fibre-
cement sheets .41
Annex J (normative) Test method for warm water evaluation of fibre-cement sheets .43
Annex K (normative) Test method for soak-dry evaluation test of fibre-cement sheets .45
Bibliography .47
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ISO 8336:2017(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see the following
URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 77, Products in fibre reinforced cement.
This third edition cancels and replaces the second edition (ISO 8336:2009), which has been technically
revised.
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ISO 8336:2017(E)

Introduction
The purpose of this document is to provide manufacturers and purchasers with uniform requirements
for fibre-cement flat sheet products. These requirements are performance-based and have been
specified with the objective of ensuring product quality, industry efficiency and the performance of the
product in service.
ISO/TC 77 aims to harmonize this document, where possible, with other national fibre-cement
standards (CEN, ASTM and JIS) to facilitate and promote uniform performance benchmarks for the
global use of fibre-cement products.
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INTERNATIONAL STANDARD ISO 8336:2017(E)
Fibre-cement flat sheets — Product specification and
test methods
1 Scope
This document specifies methods for the inspection and testing of fibre-cement flat sheets and provides
the acceptance conditions for their use in one or more of the following applications:
— external wall and ceiling finishes;
— internal wall and ceiling finishes;
— internal and external backing sheets.
Products covered by this document can be used for other purposes, provided they comply with the
appropriate national or international application code or standard.
NOTE 1 This document does not apply to sheets for fire protection purposes.
NOTE 2 This document does not include calculations for installation design requirements, wind uplift or
water proofing of the installed sheets.
NOTE 3 This document does not apply to the following products:
— boards of Portland or equivalent cement reinforced with fibrous wood particles;
— fibre-reinforced boards of calcium silicate or cement for thermal insulation or fire protection;
— sheets containing asbestos fibre reinforcement;
— sheets containing steel fibre reinforcement;
— fibre-cement roofing slates.
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.
ISO 390, Products in fibre-reinforced cement — Sampling and inspection
ISO 12572, Hygrothermal performance of building materials and products — Determination of water
vapour transmission properties — Cup method
ISO 13787, Thermal insulation products for building equipment and industrial installations —
Determination of declared thermal conductivity
ANSI A118.1, Specification for Dry-Set Portland Cement Mortar
ANSI A118.4, Specification for Latex-Portland Cement Mortar
ANSI A136.1, Organic Adhesives for Installation of Ceramic Tile
A S T M G21: 2015, Standard Practice for determining Resistance of Synthetic Polymeric Materials to Fungi
ASTM D1037, Standard Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel
Materials
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ISO 8336:2017(E)

ASTM E84, Standard Test Method for Surface Burning Characteristics of Building Materials
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
3.1
acceptance test
test to establish whether a batch of sheets conforms to a specification
Note 1 to entry: The test is performed on samples drawn from continuous production or from a consignment
(see ISO 390).
Note 2 to entry: Test methods, specifications and limit values are specified in this document. Sampling levels and
acceptance criteria are specified in Clause 6.
3.2
type test
test carried out to demonstrate conformity with the requirements of this document or for the approval
of a new product and/or when a fundamental change is made in formulation and/or method of
manufacture, the effects of which cannot be predicted on the basis of previous experience
Note 1 to entry: The test is performed on the as-delivered product, but is not required for each production batch.
3.3
acceptable quality level
AQL
maximum percent defective (or maximum number of defects per 100 units) which can be considered
satisfactory as a long-term average quality level in a sampling plan
Note 1 to entry: When a manufacturer’s process satisfies a sampling scheme with an AQL of 4 %, this indicates
that 96 % of the inspected product exceeds the specification. This type of specification provides the consumer
with a clearly defined lower quality boundary; this does not occur if acceptance is based solely on the average
value of the measured property. Examples of sampling schemes can be found in ISO 390, ISO 2859-1, or
ISO 3951 (all parts).
3.4
apparent density
dry weight/unit volume based upon the volume of the sample determined by water displacement or
equivalent
Note 1 to entry: This is an average density of the material as-delivered coated or uncoated.
3.5
as delivered
same condition as the producer intends to supply the product after completing all aspects of the process
including maturing and, when appropriate, painting
3.6
upper face
face normally exposed
3.7
under face
reverse of the upper face (3.6)
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ISO 8336:2017(E)

3.8
textured sheet
sheet that has a relief pattern which is either embossed on or applied to the upper face (3.6) as a coating
3.9
reinforcement fibre
discrete randomly dispersed elements or continuous strands of cellulose fibre, synthetic organic,
inorganic fibre or glass fibre, used in the manufacture of fibre-cement sheets
3.10
small-sized sheet
sheet for which the method of installation includes horizontal overlap
2
Note 1 to entry: Their dimensions are generally such that they have an area of <0,4 m and a length/width
ratio of ≤3.
3.11
large-sized sheet
sheet that do not correspond to indicators for small-sized sheets (3.10)
Note 1 to entry: Large sheets can be declared as “small-sized sheets”, provided tolerances for small-sized sheets
apply and are specified in the manufacturer’s literature.
3.12
planks
category A sheet having an aspect ratio (3.13) of >7 normally used as horizontal overlapping wall
covering
3.13
aspect ratio
ratio of the sheet length to the sheet width
3.14
modulus of rupture
MOR
maximum load/unit area of cross section at breaking, under flexural loading conditions
Note 1 to entry: The modulus of rupture is referred to as the bending strength or flexural strength in some
countries.
3.15
quality control
part of quality management to ensure the product being manufactured meets stated
requirements
Note 1 to entry: This is referred to as factory production control (FPC) in some countries.
3.16
ambient laboratory condition
laboratory condition where the temperature is at (23 ± 10) °C and (50 ± 20) % relative humidity
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4 Symbols and abbreviated terms
a nominal length or width of sheet, in mm
b a)  dimension of the specimen (length or width) measured parallel to the test machine
supports, in mm
b)  one of the coefficients of the regression line (see Annex B)
3
d apparent density of the sheet, in g/cm
e thickness of sheet, in mm
F breaking load, modulus of rupture test, in N
l length, in mm
L length of moisture movement specimen, in mm
m
l span between support centres in modulus of rupture test, in mm
s
m mass of the specimen after drying, in g
MOR modulus of rupture, in MPa
th
MOR modulus of rupture of i exposed specimen after the type test
fi
th
MOR modulus of rupture of i unexposed reference specimen
fci
th
MOR individual ratio of the modulus of rupture of the i pair of exposed and unexposed
i
specimens
n number of paired specimens
R average ratio of the modulus of rupture of exposed and unexposed specimens
R lower estimate of the mean of the ratios at 95 % confidence level of the modulus of rupture
L
of exposed and unexposed specimens
s standard deviation of the values in the appropriate calculation
μ water vapour transmission value
λ thermal conductivity
3
V volume of specimen, in cm
w width, in mm
th
x individual value of the i specimen tested dry
i
x minimum value to be used as the specification for the dry test method of test. This value is
std
calculated at the 97,5 % lower confidence level from the value specified for the wet method
of test (see Annex B)
x actual result obtained when dry testing (see Annex B)
0
mean value of x for i = 1 to n
x i
th
y individual value of the i specimen tested wet
i
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ISO 8336:2017(E)

y minimum value specified in the standard for wet testing (see Annex B)
std
y value calculated from the value obtained from a specimen tested dry, which is the estimate
0
at the 97,5 % lower confidence level of the value expected from a specimen tested wet
(see Annex B)
mean value of y for i = 1 to n
y i
NT new technology (European term for asbestos-free fibre-cement products)
5 Requirements
5.1 General
Sheets covered by this document are divided into three categories: A, B and C, according to their
application. Within these categories, there are five classes based upon the minimum modulus of rupture
performance (see 5.6.1). The dimensional sizes are based upon the installation requirements (see 5.5.1
and 5.5.2). They may be supplied coated or uncoated.
Dimensional tolerances are specified for two levels of product quality: Level I and Level II, which are
selected according to the installation requirements of the product.
NOTE When selecting a sheet product for a particular building application, consideration is given to the
sheet category.
Table 1 provides information concerning the sheet category which should be selected for various typical
building applications.
Table 1 — Sheet applications and categories
Application Category
Façades A
Lap siding (planks) or cladding A
Backing for tile façade A
Sub-fl
...