ISO 4179:2024

International
Standard
ISO 4179
Fourth edition
Ductile iron pipes and fittings
2024-02
for pressure and non-pressure
pipelines — Cement mortar lining
Tuyaux et raccords en fonte ductile pour canalisations avec et
sans pression — Revêtement interne de mortier de ciment
Reference number
© ISO 2024
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Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Materials . 2
4.1 Cement .2
4.2 Aggregates . . .2
4.3 Mixing water.2
4.4 Mortar .2
4.5 General requirements for using admixture and additives .3
5 Application of lining . 3
5.1 Condition of interior surface of pipe before application of lining .3
5.2 Method of application .3
5.3 Curing .3
5.4 Seal coat .3
5.5 Repairs .4
6 Thickness of lining . 4
6.1 Thickness requirements .4
6.2 Internal diameter .5
6.3 Minimum internal diameter measurement .5
6.4 Determination of lining thickness .5
7 Surface condition of hardened lining . 6
8 Test conditions and performance requirements . 7
8.1 General .7
8.2 Aggregate .7
8.2.1 Check for organic impurities .7
8.2.2 Check for silt and clay .8
8.3 Compressive strength of cement mortar lining .8
8.4 Ring bending test for mortar disbonding check .9
8.5 Appearance of lining.9
8.6 Pipes for sewerage applications .10
Annex A (normative) Quality assurance .11
Bibliography .12

iii
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of 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 www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 5, Ferrous metal pipes and metallic fittings,
Subcommittee SC 2, Cast iron pipes, fittings and their joints.
This fourth edition cancels and replaces the third edition (ISO 4179:2005), which has been technically
revised.
The main changes are as follows:
— definitions of additives and admixtures have been added;
— the following tests and performance requirements have been introduced:
a) check for organic impurities;
b) check for silt and clay;
c) compressive strength of cement mortar lining;
d) ring bending test for mortar disbanding;
— the requirement of internal diameter of pipe has been added;
— the list of performance test and routine tests has been added.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
International Standard ISO 4179:2024(en)
Ductile iron pipes and fittings for pressure and non-pressure
pipelines — Cement mortar lining
1 Scope
This document specifies the nature, the method of application, the surface condition, performance
requirements and the minimum thickness of internal linings of cement mortar for ductile iron pipes and
fittings for pressure and non-pressure pipelines as defined in ISO 2531, ISO 7186 and ISO 16631.
It covers cement mortar linings which are used to improve the hydraulic properties of pipes and fittings
compared to un-lined pipes and fittings and/or to prevent corrosion damage and includes special
requirements for linings of gravity sewers operating partially filled.
It also covers linings used for the conveyance of particularly aggressive fluids, where the following solutions
can be used either separately or in combination:
a) an increase in the thickness of the lining;
b) a change of the type of cement;
c) a coating over the lining.
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 679, Cement — Test methods — Determination of strength
ISO 2531:2009, Ductile iron pipes, fittings, accessories and their joints for water applications
ISO 7186:2011, Ductile iron products for sewerage applications
ISO 10803:2011, Design method for ductile iron pipes
ISO 16132, Ductile iron pipes and fittings — Seal coats for cement mortar linings
ISO 16631:2016, Ductile iron pipes, fittings, accessories and their joints compatible with plastic (PVC or PE)
piping systems, for water applications and for plastic pipeline connections, repair and replacement
ISO 21051:2020, Construction and installation of ductile iron pipeline system
ISO 20290-5, Aggregates for concrete — Test methods for mechanical and physical properties — Part 5:
Determination of particle size distribution by sieving method
EN 545:2010, Ductile iron pipes, fittings, accessories and their joints for water pipelines – Requirements and test
methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
additives
finely divided mineral material (e.g. ground granulated blast furnace slag, coal fly ash, ground limestone,
silica fume, mineral fillers and metakaolin, mineral pigments) or polymeric material used in order to
improve certain properties of fresh mortar or hardened lining or that can be added to cement mortar in
order to achieve specific properties
3.2
admixtures
organic or inorganic material added during the mixing process of mortar in a quantity not more than 5 % of
dry matter by mass of the cement content of the mortar to modify the properties of the mix in the fresh and/
or hardened state
Note 1 to entry: Admixtures in cement mortar is used to enhance properties of the mortar in terms of plasticizing, set
accelerating, workability etc. meeting the requirements of this document.
4 Materials
4.1 Cement
The cement used for the lining shall comply with the cement standard(s) in application in the country of pipe
manufacture or equivalent ISO standard.
Unles
...