ISO 19720-1:2017

INTERNATIONAL ISO
STANDARD 19720-1
First edition
2017-06
Building construction machinery
and equipment — Plants for the
preparation of concrete and mortar —
Part 1:
Terminology and commercial
specifications
Machines et matériels pour la construction des bâtiments — Usines de
préparation du béton et du mortier —
Partie 1: Terminologie et spécifications commerciales
Reference number
ISO 19720-1:2017(E)
©
ISO 2017

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ISO 19720-1:2017(E)

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© ISO 2017, Published in Switzerland
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ISO 19720-1:2017(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 6
5 Commercial specifications . 7
5.1 General characteristics . 7
5.2 Characteristics of main components . 8
5.2.1 Concrete mixing unit . 8
5.2.2 Dry mortar mixing unit . 8
5.2.3 Storage bin . 8
5.2.4 Conveying equipment . 8
5.2.5 Thermal energy equipment . 9
5.2.6 Drying equipment . 9
5.2.7 Screening device. 9
5.2.8 Batching equipment . 9
5.2.9 Packer . 9
5.2.10 Dry mortar storage silo .10
5.3 Other characteristics .10
Annex A (informative) Examples of concrete and dry mortar mixing and batching plants .11
Bibliography .21
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ISO 19720-1:2017(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
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URL: w w w . i s o .org/ iso/ foreword .html
This document was prepared by Technical Committee ISO/TC 195, Building construction machinery and
equipment, Subcommittee SC 1, Machinery and equipment for concrete work.
A list of all parts in the ISO 19720 series can be found on the ISO website.
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INTERNATIONAL STANDARD ISO 19720-1:2017(E)
Building construction machinery and equipment — Plants
for the preparation of concrete and mortar —
Part 1:
Terminology and commercial specifications
1 Scope
This document specifies terms and definitions and commercial specifications for concrete mixing plants,
concrete batching plants and dry mortar mixing plants used in the preparation of concrete and mortar.
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 11375, Building construction machinery and equipment — Terms and definitions
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11375 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
concrete
material formed by mixing cement, coarse and fine aggregates, and water, with or without the
incorporation of admixtures, additives or fibres, which develops its properties by hydration
3.2
mortar
mixture of binder (cement, etc.), fine aggregates, water and optional additives, which hardens and
which is normally used as a jointing material
3.3
dry mortar
mixture of binder (cement, plaster, etc.), fine aggregates and optional additives and when mixed with
water, hardens
3.4
concrete mixing plant
combination of structures and devices used for proportioning aggregates, cement, water and possible
additives, admixtures, and mixing them by means of the concrete mixing unit (3.7) to generate
concrete (3.1)
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ISO 19720-1:2017(E)

3.4.1
batch-type concrete mixing plant
concrete mixing plant (3.4) which runs periodically following defined processes including materials
supply, proportion, charging, mixing and discharging
3.4.2
continuous concrete mixing plant
concrete mixing plant (3.4) in which all the processes including materials-supply, proportion, charging,
mixing, discharging are operated continuously
3.4.3
vertical concrete mixing plant
tower concrete mixing plant
configuration of concrete mixing plant (3.4) where the aggregate storage bins (3.9) are located above the
concrete mixing unit (3.7)
Note 1 to entry: See Figure A.1.
3.4.4
horizontal concrete mixing plant
configuration of concrete mixing plant (3.4) where the aggregate storage bins (3.9) or an active storage
are located to the side of the concrete mixing unit (3.7)
Note 1 to entry: An example of a horizontal concrete mixing plant where aggregates are loaded into bins with a
wheel loader is shown in Figure A.2.
Note 2 to entry: An example of a horizontal concrete mixing plant where aggregates are loaded into bins with a
drag-line is shown in Figure A.3.
3.4.5
stationary concrete mixing plant
concrete mixing plant (3.4) which remains fixed in place during operation and designed to stay
permanently in its position (e.g. installed on permanent foundations) until its dismantling
3.4.6
transferable concrete mixing plant
concrete mixing plant (3.4) which remains fixed in place during operation and where components can
be quickly assembled and disassembled for transport from one place to another
Note 1 to entry: See Figure A.4.
3.4.7
mobile concrete mixing plant
concrete mixing plant (3.4) which remains fixed in place during operation and which is self-propelled or
trailed to move from one place to another
Note 1 to entry: See Figure A.5.
3.5
concrete batching plant
combination of structures and devices used for proportioning aggregates, cement, and/or water,
admixtures so that they can be ready for transport
3.5.1
vertical concrete batching plant
configuration of concrete batching plant (3.5) where the aggregate storage bins (3.9) are located above
the batcher and the vehicle being loaded
Note 1 to entry: See Figure A.6.
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ISO 19720-1:2017(E)

3.5.2
horizontal concrete batching plant
configuration of concrete batching plant (3.5) where the aggregate storage bins (3.9) are arranged at the
side of the charging (feeding) hopper
Note 1 to entry: See Figure A.7.
3.5.3
stationary concrete batching plant
concrete batching plant (3.5) which remains fixed in place during operation and is designed to stay
permanently in its position (e.g. installed on permanent foundations) until its dismantling
Note 1 to entry: See Figure A.6.
3.5.4
transferable concrete batching plant
concrete batching plant (3.5) which remains fixed in place during operation and where components can
be quickly assembled and disassembled for transport from one place to another
Note 1 to entry: See Figure A.7.
3.6
dry mortar mixing plant
combination of structures and devices used for proportioning binder (cement, plaster, etc.), fine
aggregates and possible additives, and mixing them by means of the dry mortar mixing unit (3.8) to
generate dry mortar (3.3)
3.6.1
compact dry mortar mixing plant
configuration of dry mortar mixing plant (3.6) where the aggregate storage bins (3.9) are arranged
below the dry mortar mixing unit (3.8) and all the aggregates are lifted up beyond the mixing unit and
then mass-dosed
Note 1 to entry: See Figure A.8.
3.6.2
serial dry mortar mixing plant
configuration of dry mortar mixing plant (3.6) where the aggregate storage bins (3.9) are arranged below
the dry mortar mixing unit (3.8) and all the mass-dosed aggregates are lifted up beyond the mixing unit
Note 1 to entry: See Figure A.9.
3.6.3
tower dry mortar mixing plant
configuration of dry mortar mixing plant (3.6) where the aggregate storage bins (3.9) and batcher (3.15)
are located above the dry mortar mixing unit (3.8)
Note 1 to entry: See Figure A.10.
3.7
concrete mixing unit
component of a concrete mixing plant (3.4) where measured (by mass or volume) proportions of water,
cement, aggregate and possible additives, admixtures are mixed for a specified amount of time
3.8
dry mortar mixing unit
component of a dry mortar mixing plant (3.6) where mass-measured proportions of binder (cement,
plaster, etc.), fine aggregates and possible additives are mixed for a specified amount of time
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ISO 19720-1:2017(E)

3.9
storage bin
container on mixing and batching plants used for storing raw materials (e.g. aggregates, cement)
Note 1 to entry: See Figure A.1.
3.10
conveying equipment
equipment used to transport materials from the storage area to the batching and/or mixing equipment
EXAMPLE Bucket elevator, belt conveyor.
Note 1 to entry: See Figure A.1, key number 1.
3.11
thermal energy equipment
equipment used for the generation, conversion of thermal energy for the drying of wet sand
EXAMPLE Fluidized bed furnace and burner.
3.12
drying equipment
equipment used to achieve heat exchange for the drying of wet sand
3.13
screening device
equipment used to classify and separate material particles by sizes passing through the grate openings
3.14
batching equipment
equipment used to prepare material or mixed material according to the proportion of concrete (3.1),
mortar (3.2) and dry mortar (3.3) mixture
3.15
batcher
device consisting of the scales and necessary mechanism for its operation including cement batcher,
aggregate batcher, additive batcher and water batcher, etc.
3.16
discharge device
mechanism that moves the mixed concrete (3.1) or dry mortar (3.3) to transport vehicle
Note 1 to entry: Discharge device of concrete mixing plant and batching plant is a fixed
...