oSIST prEN 18185:2025

SLOVENSKI STANDARD
01-julij-2025
Trajnostnost gradbenih objektov - Okoljske deklaracije za proizvode - Pravila za
kategorije proizvodov za montažni lahki beton z odprto strukturo in montažni
avtoklavirani porobeton
Sustainability of construction works - Environmental product declarations - Product
Category Rules for precast lightweight concrete with an open structure and precast
autoclaved aerated concrete
Nachhaltigkeit von Bauwerken - Umweltproduktdeklarationen - Produktkategorieregeln
für vorgefertigten haufwerksporigen Leichtbeton und vorgefertigten dampfgehärteten
Porenbeton
Contribution des ouvrages de construction au développement durable - Déclarations
environnementales sur les produits - Règles régissant les catégories de produits pour le
béton préfabriqué de granulats légers à structure ouverte et le béton cellulaire autoclavé
préfabriqué
Ta slovenski standard je istoveten z: prEN 18185
ICS:
13.020.50 Označevanje z ekološko Ecolabelling
nalepko
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2025
ICS 13.020.50; 91.100.30
English Version
Sustainability of construction works - Environmental
product declarations - Product Category Rules for precast
lightweight concrete with an open structure and precast
autoclaved aerated concrete
Contribution des ouvrages de construction au Nachhaltigkeit von Bauwerken -
développement durable - Déclarations Umweltproduktdeklarationen -
environnementales sur les produits - Règles régissant Produktkategorieregeln für vorgefertigten
les catégories de produits pour le béton préfabriqué de haufwerksporigen Leichtbeton und vorgefertigten
granulats légers à structure ouverte et le béton dampfgehärteten Porenbeton
cellulaire autoclavé préfabriqué
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 177.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 18185:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Abbreviations . 8
5 General aspects . 8
5.1 Objective of the c-PCR. 8
5.2 Types of EPD with respect to life cycle stages covered . 8
5.3 Comparability of EPD for construction products . 8
5.4 Additional environmental information . 9
5.5 Ownership, responsibility, and liability for the EPD. 9
5.6 Communication formats . 9
6 Product category rules for LCA . 9
6.1 Product category . 9
6.2 Life cycle stages and their information modules to be included . 9
6.2.1 General. 9
6.2.2 A1-A3, Product stage, information modules . 9
6.2.3 A4–A5, Construction process stage, information modules . 11
6.2.4 B1–B5, Use stage, information modules related to the building fabric . 11
6.2.5 B6–B7, use stage, information modules related to the operation of the building . 11
6.2.6 C1–C4 End-of-life stage, information modules . 11
6.2.7 D, Benefits and loads beyond the system boundary, information module . 11
6.3 Calculation rules for the LCA . 11
6.3.1 Functional or declared unit . 11
6.3.2 Functional unit . 11
6.3.3 Declared unit . 11
6.3.4 Reference service life (RSL) . 12
6.3.5 System boundaries . 12
6.3.6 Criteria for the exclusion of inputs and outputs . 19
6.3.7 Selection of data . 19
6.3.8 Data quality . 20
6.3.9 Developing product level scenarios . 20
6.3.10 Units . 26
6.4 Inventory analysis . 26
6.4.1 Collecting data . 26
6.4.2 Calculation procedures . 26
6.4.3 Allocation of input flows and output emissions . 26
6.4.4 Information on biogenic carbon content . 26
6.5 Impact assessment . 26
6.5.1 General. 26
6.5.2 Core environmental impact indicators . 27
7 Content of the EPD . 27
7.1 Declaration of general information. 27
7.2 Declaration of environmental indicators derived from LCA . 27
7.2.1 General . 27
7.2.2 Rules for declaring LCA information per module . 27
7.2.3 Indicators describing environmental impacts based on life cycle impact assessment
(LCIA) . 27
7.2.4 Indicators describing resource use and environmental information based on life cycle
inventory (LCI) . 27
7.2.5 Information on biogenic carbon content . 28
7.3 Scenarios and additional technical information . 28
7.3.1 General . 28
7.3.2 Construction process stage . 28
7.3.3 B1-B7 use stage . 28
7.3.4 End-of-life . 28
7.4 Additional information on release of dangerous substances to indoor air, soil and water
during the use stage . 29
7.4.1 Indoor air . 29
7.4.2 Soil and water . 29
7.5 Aggregation of information modules . 29
8 Project report . 29
8.1 General . 29
8.2 LCA-related elements of the project report . 29
8.3 Documentation on additional information . 29
8.4 Data availability for verification . 29
9 Verification and validity of an EPD. 29
Annex A (informative) Product stage guidance for the definition of system boundaries . 30
Annex B (normative) Re-carbonation of elements . 31
Annex C (informative) Scenarios . 34
Bibliography . 37

European foreword
This document (prEN 18185:2025) has been prepared by Technical Committee CEN/TC177
“Prefabricated reinforced components of autoclaved aerated concrete or lightweight aggregate concrete
with open structure”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
Introduction
This document provides rules for environmental product declarations (EPD) for prefabricated reinforced
components. It complements the core product category rules for all construction products and services
given in EN 15804:2012+A2:2019, Sustainability of construction works — Environmental product
declarations — Core rules for the product category of construction products.
This document provides additional rules for environmental product declarations (EPD) of prefabricated
reinforced components. It complements the core rules for all construction products and services as
established in EN 15804:2012+A2:2019.
EPD information is expressed in information modules as defined in EN 15804:2012+A2:2019, which
allow easy organization and expression of data packages throughout the life cycle of concrete and
concrete elements. The approach requires that the underlying data should be consistent, reproducible
and comparable.
In line with EN 15804:2012+A2:2019 the EPD is expressed in a form that allows aggregation to provide
complete information for buildings. This document does not deal with aggregation at the building level
nor does this document describe the rules for applying EPD in a building assessment.
This document refers to and mirrors relevant parts of EN 16757, Sustainability of construction works —
Environmental product declarations — Product Category Rules for concrete and concrete elements, drafted
to cover concrete products to CEN/TC 177. In respect of the mechanism for re-carbonation cementitious
components this document references and follows the calculation methodology of G.2 of informative
Annex G ‘CO uptake by carbonation — Guidance on calculation’ of EN 16757:2022.
The document deals with a limited number of quantifiable parameters as predefined in
EN 15804:2012+A2:2019. Future revisions of EN 15804:2012+A2:2019 can lead to the incorporation in
this document of additional predetermined parameters. This document provides the means for
developing a Type III environmental declaration for prefabricated reinforced components in the context
of the suite of standards that are intended to assess the sustainability of construction works.
This suite of standards includes:
— EN 15643, Sustainability of construction works — Framework for assessment of buildings and civil
engineering works
— EN 15978, Sustainability of construction works — Assessment of environmental performance of
buildings — Calculation methods
— EN 15804:2012+A2:2019, Sustainability of construction works — Environmental product
declaration — Core rules for the product category of construction products
— EN 15941, Sustainability of construction works — Environmental product declarations — Data quality
for the environmental assessment of products and construction works — Selection and use of data
— EN 15942, Sustainability of construction works — Environmental product declarations —
Communication format — Business to business
— CEN/TR 16970:2016, Sustainability of construction works — Guidance for the implementation of
EN 15804
— EN 17472, Sustainability of construction works —Sustainability assessment of civil engineering
works — Calculation methods
— EN 17672, Sustainability of construction works — Environmental product declarations — Horizontal
rules for business to consumer communication
— EN 17680, Sustainability of construction works — Evaluation of the potential for sustainable
refurbishment of buildings
1 Scope
This document provides product category rules (PCR) guidance for the development of Type III
environmental declarations for prefabricated reinforced components of autoclaved aerated concrete or
lightweight aggregate concrete with open structure according to EN 15804:2012+A2:2019.
This document defines the parameters to be reported, the EPD types (and life cycle stages) to be covered,
the rules to be followed in order to generate life cycle inventories (LCI) and conduct life cycle impact
assessments (LCIA) and the data quality to be used in the development of EPDs.
In addition to the common parts of EN 15804:2012+A2:2019, this document provides guidance for
elements made as prefabricated reinforced components of autoclaved aerated concrete or lightweight
aggregate concrete with open structure:
— defines the system boundaries;
— defines the modelling and assessment of material-specific characteristics;
— defines allocation procedures for multi-output processes along the production chain;
— defines allocation procedures for reuse and recycling;
— includes the rules for calculating the LCI and the LCIA underlying the EPD;
— provides guidance/specific rules for the determination of the reference service life (RSL);
— gives guidance on the establishment of default scenarios;
— gives guidance on default functional units for elements.
This document is intended to be used for cradle to gate, cradle to gate with options or cradle to grave
assessments, when the intention is clearly stated in the system boundary description.
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.
EN 15804:2012+A2:2019, Sustainability of construction works — Environmental product declarations —
Core rules for the product category of construction products
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 15804:2012+A2:2019 and the
following 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
aggregate
granular material used in construction
Note 1 to entry: Aggregate may be natural, manufactured, or recycled.
[SOURCE: EN 12620:2002+A1:2008, 3.1 and EN 13055-1:2002]
3.2
carbonation
carbon dioxide reaction with calcium and magnesium containing minerals to form carbonates
3.3
lightweight aggregate concrete with open structure
3 3
concrete with a porous structure and a dry bulk density ranging from 400 kg/m to 2,000 kg/m
produced with lightweight aggregates (LWA), cement, concrete additives, and admixtures
[SOURCE: prEN 1520:20xx1 , 3.2, modified – open and porous structure have been added]
3.4
autoclaved aerated concrete
AAC
concrete that is manufactured from binders such as cement and/or lime combined with fine siliceous-
based material, cell-generating material, and water
Note 1 to entry: The raw materials are mixed and cast into moulds where the mix is allowed to rise and set into
cakes, and after this part of the process, the cake is cut into the required sizes of components and cured with high-
pressure steam in autoclaves.
[SOURCE: prEN 12602:20xx1 , 3.1]
3.5
element
precast reinforced components of autoclaved aerated concrete or lightweight aggregate concrete with
open structure
3.6
cement
finely ground inorganic material which, when mixed with water, forms a paste that sets and hardens
through hydration reactions and processes and which, after hardening, retains its strength and stability
even under water
[SOURCE: EN 206:2013+A2:2021, 3.1.2.8]
3.7
addition
addition added during the mixing process to improve certain properties or to achieve special properties
[SOURCE: EN 206:2013+A2:2021, 3.1.2.1]
3.8
admixture
admixture added during the mixing process to improve certain properties or to achieve special properties
[SOURCE: EN 206:2013+A2:2021, 3.1.2.4]

Under preparation.
Under preparation.
3.9
lime
calcium oxide and/or hydroxide, and calcium-magnesium oxide and/or hydroxide produced by the
thermal decomposition (calcination) of naturally occurring calcium carbonate (for example limestone,
chalk, shells) or naturally occurring calcium magnesium carbonate (for example dolomitic limestone,
dolomite)
[SOURCE : EN 459-1:2015, 3.1]
4 Abbreviations
Abbreviations given in EN 15804:2012+A2:2019 and the following apply.
EOL End of life
FU Functional unit
DU Declared unit
AAC Autoclaved aerated concrete
LAC Lightweight aggregate concrete with open structure
c-PCR Complementary product category rules
5 General aspects
5.1 Objective of the c-PCR
This c-PCR aims to provide rules specific to element units for the application of EN 15804:2012+A2:2019.
In addition to the objectives of EN 15804:2012+A2:2019, this document aims to:
— define the parameters being declared collated and reported;
— describe which stages of a product’s life cycle are considered in the EPD and which processes are to
be included in the life cycle stages;
— to define rules for the development of scenarios;
— to communicate EPDs and environmental information about elements;
— to ensure that comparisons between construction products are only carried out in the context of their
application in construction works.
This c-PCR enables transparency for the EPD-development for elements.
5.2 Types of EPD with respect to life cycle stages covered
For elements, the following type of EPD shall be declared: cradle to grave and module D (A, B, C and D).
This declaration shall be based on a functional unit or a declared unit.
EN 15804:2012+A2:2019 applies.
5.3 Comparability of EPD for construction products
EN 15804:2012+A2:2019 applies.
5.4 Additional environmental information
EN 15804:2012+A2:2019 applies.
5.5 Ownership, responsibility, and liability for the EPD
EN 15804:2012+A2:2019 applies.
5.6 Communication formats
EN 15804:2012+A2:2019 applies.
6 Product category rules for LCA
6.1 Product category
The product category referred to in this document includes elements conforming to prEN 1520:20xx or
prEN 12602:20xx .
6.2 Life cycle stages and their information modules to be included
6.2.1 General
See 5.2.
6.2.2 A1-A3, Product stage, information modules
In addition to the text of EN 15804:2012+A2:2019:
When the full LCI of constituents is not available, impact indicators and aspects from the EPDs complying
to EN 15804:2012+A2:2019 for the constituents, covering modules A1 to A3, can be used to assess
module A1 of the element. If transport is included, then the impacts and aspects covering modules A1 to
A4 can be used to assess modules A1 and A2 (see Figure 1).
NOTE For the use of constituents in elements, when the EPD of constituents is used, modules A1 to A3 of the
constituent EPD become part of modules A1 of element EPD, and module A4 of constituent EPD becomes part of
modules A2 of element EPD if relevant and following the supply chain scenario.
Figure 1 — EPD for constituents (top) and for elements (bottom)
6.2.3 A4–A5, Construction process stage, information modules
EN 15804:2012+A2:2019 applies.
6.2.4 B1–B5, Use stage, information modules related to the building fabric
EN 15804:2012+A2:2019 applies.
NOTE Carbonation of elements takes place in module B1.
6.2.5 B6–B7, use stage, information modules related to the operation of the building
EN 15804:2012+A2:2019 applies.
6.2.6 C1–C4 End-of-life stage, information modules
EN 15804:2012+A2:2019 applies.
NOTE Carbonation of elements can also take place in these modules.
6.2.7 D, Benefits and loads beyond the system boundary, information module
EN 15804:2012+A2:2019 applies.
At the end of life of elements, there are many options for new uses.
6.3 Calculation rules for the LCA
6.3.1 Functional or declared unit
EN 15804:2012+A2:2019 applies.
6.3.2 Functional unit
6.3.2.1 General
EN 15804:2012+A2:2019 applies.
6.3.2.2 Performance in a functional unit
EN 15804:2012+A2:2019 applies.
6.3.3 Declared unit
In addition to the text in EN 15804:2012+A2:2019:
For lightweight aggregate concrete with open structure
3 3
The declared unit is: 1 m LAC of a declared dry density (kg/m ).
The amount of reinforcement shall be declared in kg/m .
NOTE Other units (e.g. m of a declared thickness (mm) and a declared dry density) are also possible.
The dry density (kg/m ) should be specified in the EPD.
For AAC prefabricated reinforced components:
3 3
AAC of a declared dry density (kg/m ).
The declared unit is: 1 m
The amount of reinforcement shall be declared in kg/m .
NOTE Other units (e.g. m of a declared thickness (mm) and a declared dry density) are also possible.
The dry density (kg/m ) should be specified in the EPD.
6.3.4 Reference service life (RSL)
6.3.4.1 General
In addition to the text in EN 15804:2012+A2:2019:
Elements have a RSL normally exceeding that of the construction works.
Under normal service conditions, the RSL of elements shall be specified according to the planned use.
Guidance is given in Annex C.
NOTE Regarding the RSL and the intended use, national regulations or requirements can apply.
6.3.4.2 Scenarios for RSL and functional unit
EN 15804:2012+A2:2019 applies.
6.3.5 System boundaries
6.3.5.1 General
In addition to the text in EN 15804:2012+A2:2019:
For elements, the following type of EPD shall be declared: cradle to grave and module D (A, B, C, and D).
The general layout of system boundaries may be found in Figure 2.
Key
Normal process/component
Optional process/component
Waste cycle
External transport
Internal move
Waste flow
Figure 2 — General layout of system boundaries
Within the system boundaries, the impact of carbonation during the production, storage, use and the end-
of-life stages of the product shall be taken into account.
Carbonation is a natural process that can occur during the life cycle of elements containing reactive
calcium components. Carbonation is a continuous process, if the building is demolished earlier than the
RSL, then carbonation should be taken into account at the end of life.
The quantity of CO bound varies according to the type of element and the exposure conditions in use.
Annex B provides methods to assess carbon dioxide uptake through carbonation. Other calculation
methods may be used if transparently documented.
When carbonation is not taken into account, this shall be stated on the EPD. When carbonation is taken
into account assumptions made shall be specified.
For carbonization characterization factor see 6.5.1
6.3.5.5 clearly defines the system boundaries of the end of life stage, in order to distinguish between the
benefits within and beyond the system boundaries.
6.3.5.2 Product stage
In addition to the text in EN 15804:2012+A2:2019:
A1 Production of raw materials or constituent products.
All resources (raw materials and constituent products) entering the production process shall be declared.
The main raw and auxiliary materials for the different element types are (not limited listing):
Lightweight aggregate concrete with open structure
Raw materials
— Cement;
— Other binders;
— Admixtures;
— Additions;
— Steel reinforcement;
— Non-metallic reinforcement;
— Lightweight aggregates (including source) including extraction and processing;
— Fibres (if relevant);
— Recycled or returned production materials;
— Water (including source);
— Energy (including source).
Auxiliary materials and consumables:
— Admixtures;
— Additions;
— Steel reinforcement (if relevant);
— Non-metallic reinforcement;
— Mould oil;
— Insulation material (if relevant);
— Packaging;
— Pallets;
— Energy (including source).
Prefabricated reinforced components of autoclaved aerated concrete
Raw materials:
— Cement;
— Quicklime;
— Hydrated lime;
— Quartz sand;
— Quartz powder;
— Rock powder;
— Fly ash;
— Steel reinforcement;
— Return slurry;
— Recycled AAC, anhydrite (natural, from industry);
— Gypsum (natural or flue gas desulphurisation);
— Aluminium-powder;
— Aluminium-paste;
— Water (including source);
— Energy (including source).
Auxiliary materials and consumables:
— Mould oil;
— Grinding balls;
— Superplasticizer;
— Hydrophobic agents;
— Steam additives;
— Water conditioners (e.g. NaCl, NaOH, HCl);
— Pallets;
— Packaging.
A2 Transport of raw materials (incl. packaging material) to the production site and any internal
transport (lifts, cranes, etc.).
A3 Manufacturing.
All inputs and outputs used during the different stages of the production process shall be considered. The
main stages for the different element types are:
Lightweight aggregate concrete with open structure
— Raw material processing (if relevant);
— Production of auxiliary materials;
— Reinforcement manufacturing;
— Mixing;
— Moulding;
— Curing;
— Internal recycling;
— Internal transport;
— Any additional treatment of the product (heating, surface treatment, etc.);
— Packaging;
— Storing;
— Treatment of packaging waste.
Prefabricated reinforced components of autoclaved aerated concrete
— Raw material processing (e.g. milling);
— Reinforcement manufacturing;
— Mixing;
— Moulding;
— Curing;
— Cutting;
— Water processing and steam generation;
— Autoclaving;
— Packaging;
— Storing;
— Internal recycling;
— Treatment of packaging waste.
6.3.5.3 Construction stage
In addition to the text in EN 15804:2012+A2:2019:
A5 Installation in the building.
In general, the use of energy and water during the installation of elements is negligible. Unloading of
trucks and cutting of elements on site is considered negligible, and the few unused offcuts are also
considered negligible. Cutting and installation of partition panels is usually done manually.
NOTE Cutting of prefabricated reinforced components of autoclaved aerated concrete is normally carried out
in the factory.
However, some processes may be relevant and need to be included. This is particularly the case for when
mechanical equipment such as cranes are used.
Handling of take-back quantities and packaging (if applicable) should be taken into account. As a general
approach, national scenarios for packaging should be used, if no other data are available.
Disposal of any packaging material (if relevant) shall be taken into account.
A description of the reference scenarios used for the construction phase shall be part of the EPD where
relevant.
When a functional unit is declared details of any ancillary materials (e.g. mortars including water used
for site-mixed mortar) shall be included.
6.3.5.4 Use stage
6.3.5.4.1 General
EN 15804:2012+A2:2019 applies.
6.3.5.4.2 B1–B5 Use stage information modules related to the building fabric
In addition to the text in EN 15804:2012+A2:2019:
B1: Use of the installed element in terms of any emissions to the environment (not covered by B2–B7)
When carbonation is taken into account during the use stage, it shall be taken into account in module B1,
see Annex B.
Elements not containing organic materials do not contain volatile components.
The naturally ionising radiation of elements is extremely low permitting unlimited use of these products
from a radiological perspective.
Elements can be used without any restrictions concerning radiation.
NOTE 1 The European Commission “Radiation Protection 112” report as well as a number of national reports
show that the activity concentration values are well below the thresholds for exemption or clearance of materials,
the gamma radiation is well below the reference level and the activity concentration index (I) is well below 1
according to the Directive 2013/59/EURATOM.”
B2–B5: Elements generally require neither maintenance nor repairs during the use phase, neither
replacement nor refurbishment, and therefore no impact shall be declared in these modules.
NOTE 2 Maintenance and refurbishment are generally relevant only for the building works, not for elements
themselves.
6.3.5.4.3 B6-B7 use stage information modules related to the operation of buildings
B6–B7: these modules are not relevant for elements.
6.3.5.5 End-of-life stage
In addition to the text in EN15804:2012+A2:2019:

Figure 3 — Typical processes at the end-of-life of elements and their assignment to the life cycle
modules C1-C4 and D (transport processes not shown)
NOTE 1 The legal interpretation of end-of-waste can differ significantly at national level.
When carbonation is taken into account during the end-of-life-stage, it shall be taken into account in
module C, see Annex B.
An assessment of which amount (percentage) of element waste reaches the end of waste status should
be based on locally available data.
NOTE 2 It is technically possible for (crushed) elements to fully reach the end of waste stage when correctly
sorted out.
6.3.5.6 Benefits and loads beyond the product system boundary in module D
In addition to the text in EN 15804:2012+A2:2019:
See Figure 3 for assignment of impacts.
NOTE For the calculation procedures and examples, see 6.3.9.5.
When module D is used for elements, it can be applied for the following:
— reuse of elements;
— recycling of constituents;
a) AAC or LAC;
b) reinforcing steel and transport anchor;
c) other constituents.
6.3.6 Criteria for the exclusion of inputs and outputs
EN 15804:2012+A2:2019 applies.
6.3.7 Selection of data
It is recommended to have data that meet EPD objectives, at the appropriate level (e.g. national, European
level) especially for the following:
— cement;
— additions;
— reinforcement;
— transport;
— energy use;
— water use.
It shall be stated whether a specific concrete mix design or a generic design is used to make the
assessment.
Similarly, it shall be stated whether transport data are plant-specific or average.
When data from EPDs are used for upstream and downstream processes, the use of an
EN 15804:2012+A2:2019 compliant format for an EPD is preferable.
When available, energy mixes used for EPD are those provided by the suppliers. If not available, reference
databases shall be used.
Data assumption for average EPDs can be developed at national level, taking into account principles
employed at the place of production and place of use.
6.3.8 Data quality
6.3.8.1 General
EN 15804:2012+A2:2019 applies.
6.3.8.2 Data quality requirements
EN 15804:2012+A2:2019 applies.
6.3.8.3 Data quality assessment schemes applied on generic or specific data used and
established in the EPD
EN 15804:2012+A2:2019 applies.
6.3.9 Developing product level scenarios
6.3.9.1 General
In addition to the text of EN 15804:2012+A2:2019:
The description of the unit (functional or declared) is the basis for developing the life cycle scenario (e.g.
different scenarios for exposed and non-exposed elements). EN 15804:2012+A2:2019, 6.3.9 excludes
modules A1 to A3 from product scenarios. Therefore, the main topics to be included in the appropriate
life cycle stages are the following, where relevant:
— downstream transport (A4);
— method of installation on site (A5);
— reference Service Life for the Unit and relevant in-use conditions (B1 to B5);
— for each destination (crushing, stockpiling and disposal) percentage of constituents use after
demolition (C1 to C4);
— benefits and loads beyond the system boundary (D).
6.3.9.2 Construction stage
6.3.9.2.1 A4. Transportation of products to the site
EN 15804:2012+A2:2019 applies.
6.3.9.2.2 A5. Construction and installation process
Scenarios shall consider the most common ways to install the element. Use of cranes or other machinery
shall be considered including any additional process.
Any wastage of materials generated during the installation of product at the construction site shall be
reported in this Module.
6.3.9.3 Use stage
6.3.9.3.1 B1. Use of elements
When relevant there are no other environmental impacts related to the use of elements other than CO -
uptake i.e. carbonation.
NOTE Annex B provides methods to assess the carbon dioxide uptake through carbonation of elements.
6.3.9.3.2 B2. Maintenance of element
Scenarios are not required as there are no impacts in this module.
6.3.9.3.3 B3. Repair of element
Scenarios are not required as there are no impacts in this module.
6.3.9.3.4 B4. Replacement of element
Scenarios are not required as there are no impacts in this module.
6.3.9.3.5 B5. Refurbishment of element
Scenarios are not required as there are no impacts in this module.
6.3.9.3.6 B6. Operational energy use
Scenarios are not required as there are no impacts in this module.
6.3.9.3.7 B7. Operational water use
Scenarios are not required as there are no impacts in this module.
6.3.9.4 End of life
6.3.9.4.1 General
Figure 3 shows possible scenarios for end of life and for use beyond the system boundary.
Typically, structures made from elements are demolished or disassembled with demolition excavators,
cranes (with wrecking balls) or explosives. The environmental loads from the deconstruction, e.g. from
the operation of the machinery (fuels, lubricants, emissions) or the use of water sprays, shall be included
in module C1.
After demolition/deconstruction, the element debris and any elements and ancillary components
retrieved from the structure are considered to be waste (Figure 3, cell 2).
— Scenario “Disposal of debris at a landfill site” (Figure 3, cell 3)
When element debris does not reach the end-of-waste state the environmental loads, e.g. from the
operation of the landfill site, shall be included in module C4.
— Scenario “Reuse of recovered elements in new construction works” (Figure 3, cell 4)
Recovered elements or ancillary products reach the end-of-waste state and become a recovered
material (construction product) when they are reused in new buildings. Loads from the potential
treatment, such as cleaning, of the element and benefits from the substitution of primary materials
(construction products) shall be included in module D.
— Scenario “Use of element debris, e.g. in land restoration” (Figure 3, cell 5)
The element waste reaches the end- of-waste state and becomes a recovered material when the
coarse element debris is used for a specific purpose without further waste processing (e.g. in land
restoration). Benefits from the substitution of primary materials shall be included in module D.
— Scenario “Crushing/recycling of element” (Figure 3, cell 6)
The coarse element waste is crushed into smaller fractions in stationary crushing plants or in mobile
crushers. The environmental impacts e.g. from the operation of the machinery (fuels, lubricants,
emissions) and the stockpiling of the crushed element (e.g. from the operation of excavators or wheel
loaders) shall be included in module C3.
For the crushed element two “sub-scenarios” are feasible:
— Scenario: “Crushed element substitutes primary material without further processing” (Figure 3,
cell 7)
The crushed element reaches the end-of-waste state when it is reused as a secondary material, e.g.
in road construction. The benefits from the substitution of primary materials shall be included in
module D.
— Scenario “Crushed element substitutes primary material with further processing” (Figure 3, cell 8)
The crushed element reaches the end-of-waste state once an immediate market or demand is
available and no risk of reverting to a legal ‘waste’ status exists, but in contrast to the previous
scenario further
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