ENVIRONMENTAL PRODUCT DECLARATION

as per /ISO 14025/ and /EN 15804/

Owner of the Declaration Xella Baustoffe GmbH

Programme holder Institut Bauen und Umwelt e.V. (IBU)
Publisher Institut Bauen und Umwelt e.V. (IBU)
Declaration number EPD-XEL-20170147-IAD1-EN
Issue date 09/11/2017
Valid to 08/11/2022

Ytong® Autoclaved Aerated Concrete

Xella Baustoffe GmbH

www.ibu-epd.com / https://epd-online.com

Umwelt Produktdeklaration Name des Herstellers – Name des Produkts

1. General Information

Xella Baustoffe GmbH Ytong® Autoclaved Aerated Concrete

Programme holder Owner of the Declaration
IBU - Institut Bauen und Umwelt e.V. Xella Baustoffe GmbH
Panoramastr. 1 Düsseldorfer Landstraße 395
10178 Berlin 47259 Duisburg
Germany
Declaration number Declared product / Declared unit
EPD-XEL-20170147-IAD1-EN 1 m³ unreinforced Ytong® Autoclaved Aerated
Concrete with an average gross density of 438 kg/m³.
This Declaration is based on the Product Scope:
Category Rules: This LCA is based on consideration of each of the 10
Aereated Concrete, 07.2014 German Autoclaved Aerated Concrete plants operated
(PCR tested and approved by the SVR) by the Xella Group and the data from 2016.

Issue date The owner of the declaration shall be liable for the
09/11/2017 underlying information and evidence; the IBU shall not
be liable with respect to manufacturer information, life
Valid to cycle assessment data and evidences.
08/11/2022
Verification
The CEN Norm /EN 15804/ serves as the core PCR
Independent verification of the declaration
according to /ISO 14025/
Prof. Dr.-Ing. Horst J. Bossenmayer internally x externally
(President of Institut Bauen und Umwelt e.V.)

Dr. Burkhart Lehmann Patricia Wolf

(Managing Director IBU) (Independent verifier appointed by SVR)

2. Product
2.1 Product description / Product definition Equilibrium moisture content at 23
<4 M-%
The products under review are unreinforced °C, 80%
components of various formats made of Autoclaved Shrinkage acc. to /DIN EN 680/ < 0,2 mm/m
Aerated Concrete (AAC). AAC is classified as a Thermal conductivity acc. to /DIN
porous, steam-cured lightweight concrete. 0.07 - 0.18 W/(mK)
12664/
Directive (EU) No. 305/2011 /CPR/ applies for placing Water vapour diffusion resistance
the product on the market in the EU/EFTA (with the 5/10 -
factor acc. to /DIN 4108-4/
exception of Switzerland). The product requires a Sound insulation acc. to /DIN EN R'w,R=28*l
Declaration of Performance taking consideration of the [dB]
ISO 717-1/ für m' ≤ 250 [kg/m²] og(m')-18
/EN 771-4:2015-11/ and CE marking. Use is governed Sound insulation acc. to /DIN EN R'w,R=28*l
by the respective national regulations. [dB]
ISO 717-1/ für m' > 250 [kg/m²] og(m')-20

2.2 Application
Unreinforced components for masonry, monolithic,
supporting and non-supporting walls. Direct contact 2.4 Delivery status
with water is avoided for technical structural reasons. Components in accordance with /DIN 20000-404/ and
/DIN 4166/.
2.3 Technical Data
The product’s performance values correspond with the 2.5 Base materials / Ancillary materials
Declaration of Performance in terms of its essential
properties in accordance with /EN 771-4:2015-11/. Sand 50 – 70% by mass
Technical construction data Cement 15 – 30% by mass
Name Value Unit Unhydrated lime 10 – 20% by mass
Gross density 250 - 800 kg/m3 Anhydrite/Gypsum 2 – 5% by mass
Compressive strength 1.6 - 10 N/mm2 Aluminium 0.05 – 0.1% by mass
Tensile strength 0.24 - 1.2 N/mm2 Mould oil ancillary material
Bending tensile strength 0,44 - 2,2 N/mm² 50–75% water by mass (with reference to the solid
Modulus of elasticity 750 - 3250 N/mm2 materials) is also used.

2 Environmental Product Declaration Xella Baustoffe GmbH – Ytong® Autoclaved Aerated Concrete
 2.8 Product processing/Installation
Sand: The sand used is a natural raw material which AAC blocks are processed by hand; lifting equipment
contains quartz (SiO2) as a primary mineral as well as is required for components whose mass exceeds 25
natural minor and trace minerals. It is an essential kg. Components are cut using band saws or by hand-
base material for the hydrothermal reaction during held carbide saws as they only generate coarse dust
steam curing. and no fine dust. High-speed tools such as angle
Cement: In accordance with /DIN EN 197-1/, cement grinders are not suitable for processing AAC as they
serves as a binding agent and is largely manufactured release fine dust.
from lime marl or a mixture of lime and clay. The The AAC components are connected with each other
natural raw materials are burned before being ground. and with other standardised construction materials in
Unhydrated lime: In accordance with /DIN EN 459-1/, thin-bed mortar according to /DIN EN 1996-1-1/ in
unhydrated lime serves as a binding agent and is combination with /DIN EN 1996-1-1/NA/A2/ and /DIN
manufactured by burning natural lime. EN 1996-2/ in combination with /DIN EN 1996-2/NA/
Anhydrite / Gypsum: In accordance with /DIN EN with or without mortared butt joints. In special cases,
13279-1/; the sulphate agent used serves towards using normal or lightweight mortar (11 kg mortar / m³).
influencing the curing time for the AAC and originates The AAC components can be plastered, coated or
from natural reserves or is produced technically. painted. Panelling with small-format parts or fair-face
Aluminium: Aluminium powder or paste serves as a cavity brickwork is also possible.
pore-forming agent. Metallic aluminium reacts in the The professional liability associations' rules apply. No
alkaline environment when hydrogen gas is added special environmental protection measures need to be
which forms the pores and then evaporates after the taken while processing the building product.
fermenting process.
Water: The availability of water is a fundamental basis 2.9 Packaging
for the hydraulic reaction undergone by the binding Packaging and pallets incurred on the building site
agents. Water is also required for manufacturing a must be collected separately. Polyethylene shrink wrap
homogeneous suspension. foil is recyclable. Clean PE foil and reusable wooden
Mould oil: Mould oil is used as a release agent pallets are taken back by the building trade (reusable
between the mould and the raw AAC mixture. PAC pallets remunerated in the German deposit system)
(polycyclic aromatic carbons) are used - free mineral which returns them to the AAC plants which then
oils plus long-chain additives for increasing viscosity. redirect foils to the foil manufacturers for recycling.
This prevents it from running out of the mould and
permits economical application. 2.10 Condition of use
As outlined under 2.6 "Manufacturing", AAC primarily
2.6 Manufacture comprises tobermorit, a natural mineral. It also
The ground quartz sand is mixed with lime, cement contains non-reacting starting components, primarily
and crushed recycled AAC material, adding water and rough quartz and possibly carbonates. The pores are
aluminium powder or paste, in a mixer to form an full of air.
aqueous suspension and cast in moulds. The water
quenches the lime under heat generation. The 2.11 Environment and health during use
aluminium reacts in an alkaline environment, whereby In accordance with the current state of knowledge,
gaseous hydrogen is formed which generates the AAC does not emit any harmful substances such as
pores in the raw mixture and evaporates without VOC, for example.
residue. The pores usually have a diameter of 0.5 – The naturally ionising radiation of AAC products is
1.5 mm and are exclusively filled with air. The initial extremely low permitting unlimited use of this material
binding process results in semi-solid ingots from which from a radiological perspective (see 7.1 Radioactivity)
the AAC components are automatically cut at high
speed. 2.12 Reference service life
The final AAC characteristics are formed during the AAC does not alter its appearance after leaving the
subsequent steam curing process over 5 to 12 hours at autoclave. It displays unlimited resistance properties
approx. 190 °C and pressure of approx. 12 bar in when used as designated.
steam pressure chambers, so-called autoclaves,
where the substances used form calcium silicate
hydrates which correspond to the tobermorit mineral
prevailing in nature. The material reaction is concluded 2.13 Extraordinary effects
on removal from the autoclave. The steam is used for
other autoclave cycles once the curing process is Fire
finished. The condensate incurred is used as process In the event of a fire, no toxic gases and vapours can
water. This saves energy and avoids pollution by hot arise
steam and waste water. Fire safety acc. to /EN 13501-1/
AAC components are then stacked on wooden pallets Name Value
and shrink-wrapped in recyclable polyethylene (PE) Building material class A1
foil. Smoke gas development s1
Burning droplets d0
2.7 Environment and health during
manufacturing
The applicable regulations of the professional liability Water
associations apply; no special measures need to be When exposed to water (e.g. flooding), AAC reacts
taken to protect employee health. slightly alkaline. No substances are washed out which
could be hazardous to water.

3 Environmental Product Declaration Xella Baustoffe GmbH – Ytong® Autoclaved Aerated Concrete
Mechanical destruction
No details. 2.15 Disposal
In accordance with the German Landfill Ordinance of
2.14 Re-use phase 27.04.2009 /DepV/, AAC must be disposed of on Class
Sorted residual AAC can be taken back by the AAC I landfills (see 7.2 Leaching).
manufacturers and re-used or recycled. This practice Waste key as per /AVV/: 17 01 01.
has been applied with broken product for decades.
This material is either processed as granulate products 2.16 Further information
or added to the AAC mixture as a substitute for sand. More information is available at www.ytong-silka.de

3. LCA: Calculation rules

3.1 Declared Unit have contributed less than 5% to the impact categories
This Environmental Product Declaration refers to the under review
product stage (Modules A1-A3) for 1 m³ Ytong®
unreinforced AAC with an average gross density of 3.5 Background data
438 kg/m³. The “GaBi 7.3” software system for comprehensive
The AAC blocks produced have a gross density of 350 analysis developed by thinkstep AG was used for
kg/m³ to 700 kg/m³. modelling the AAC production process. The consistent
The results represent the average production mix for data sets contained in the GaBi data base are
Xella (Germany) documented in the online GaBi documentation /GaBi
ts/. The basic data in the GaBi data base was applied
Declared unit for energy, transport and consumables. The Life Cycle
Name Value Unit Assessment was modelled for Germany as a reference
Declared unit 1 m3 area. This means that apart from the production
Gross density 438 kg/m3 processes under these marginal conditions, the pre-
Conversion factor to 1 kg 0.0022831 - stages also of relevance for Germany such as
provision of electricity or energy carriers were used.
3.2 System boundary The power mix for Germany 2013 is applied.
Type of EPD: cradle to plant gate
The LCA for Ytong® AAC considers the life cycle 3.6 Data quality
phases of product manufacturing (A1-A3). All of the background data of relevance for production
Product installation (Modules A4-A5) and the use was taken from the GaBi 7.3 /GaBi ts/ software data
stage (Module B) are not considered in this study. Nor base or supplied by Xella. The background data used
is disposal (Module C) considered in this study. was last revised less than 3 years ago.
Balancing the modules under review does not result in
any credits or loads outside the system boundary 3.7 Period under review
The data applied for this LCA is based on data
3.3 Estimates and assumptions recorded for the manufacture of AAC in 2016. The
Specific /GaBi processes/ (software system for volumes of energy and raw materials, ancillary
comprehensive analysis) are not available for all materials and consumables used were considered as
additives and ancillary materials. The following average annual values in 10 plants.
assumptions were made:
The percentage by mass is < 0.2% for the grinding 3.8 Allocation
media and cutting wires. The “DE sheet steel” data set AAC products of various formats are manufactured in
represents steel production including further the plants. They can be reinforced and unreinforced.
processing steps similar to those for grinding media The production of reinforced AAC was not considered
and cutting wire in this study. Reinforced AAC is produced by Xella at
three locations in Germany. Energy and material inputs
3.4 Cut-off criteria for AAC with and without reinforcement were allocated
With the exception of one ancillary material, all data and/or calculated separately for these locations and in
from the operating data survey was taken into accordance with the production data.
consideration in the analysis, i.e. all starting materials Production incurs AAC rubble which is largely refined
used according to the recipe, the thermal energy used as AAC granulate. The environmental impacts of AAC
as well as electricity and diesel consumption. As an manufacturing and the rubble used for manufacturing
ancillary material, sodium sulphite is ignored AAC granulate were allocated by mass. Approx. 10%
accounting for an input volume of < 0.001%. of the environmental loads and raw materials used are
Specific transport distances were considered for all allocated to AAC granulate (see /EPD AAC granulate/).
raw materials weighted by mass; assumptions During the production process, AAC rubble and AAC
regarding transport expenses were made for the powder are also incurred which are redirected to the
remaining inputs and outputs. production process (closed-loop recycling). This
Accordingly, material and energy flows with a share of internal recycling was considered in the calculation.
less than 1 per cent were also considered.
The manufacture of machinery, plants and other 3.9 Comparability
infrastructure required for production of the items Basically, a comparison or an evaluation of EPD data
under review was not taken into consideration in the is only possible if all the data sets to be compared
LCA. were created according to /EN 15804/ and the building
It can be assumed that the processes ignored would context, respectively the product-specific
characteristics of performance, are taken into account.
.

4 Environmental Product Declaration Xella Baustoffe GmbH – Ytong® Autoclaved Aerated Concrete
4. LCA: Scenarios and additional technical information
Modules A4-D are not taken into consideration in this
LCA.

5 Environmental Product Declaration Xella Baustoffe GmbH – Ytong® Autoclaved Aerated Concrete
5. LCA: Results
The environmental impacts of 1 m³ Ytong® unreinforced AAC with an average gross density of 438 kg/m³,
manufactured by Xella in Germany, are outlined below.
Modules marked "x" in the following overview as per /DIN EN 15804/ are not addressed here.
The following tables depict the results of the indicators of the estimated impact, use of resources, waste and other
output flows in relation to 1 m³ Ytong® AAC.

DESCRIPTION OF THE SYSTEM BOUNDARY (X = INCLUDED IN LCA; MND = MODULE NOT DECLARED)
BENEFITS AND
CONSTRUCTI LOADS
PRODUCT STAGE ON PROCESS USE STAGE END OF LIFE STAGE BEYOND THE
STAGE SYSTEM
BOUNDARIES

Operational energy
Transport from the

Waste processing
Operational water

De-construction
gate to the site

Refurbishment
Manufacturing

Replacement
Raw material

Maintenance

Recycling-
demolition

Recovery-
Assembly
Transport

Transport

Disposal

potential
Reuse-
Repair
supply

Use

use

use
A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 B6 B7 C1 C2 C3 C4 D
X X X MND MND MND MND MNR MNR MNR MND MND MND MND MND MND MND
RESULTS OF THE LCA - ENVIRONMENTAL IMPACT: 1 m³ Ytong® Autoclaved Aerated Concrete
Parameter Unit A1-A3

Global warming potential [kg CO2-Eq.] 167.00

Depletion potential of the stratospheric ozone layer [kg CFC11-Eq.] 1.62E-10
Acidification potential of land and water [kg SO2-Eq.] 1.83E-1
Eutrophication potential [kg (PO4)3--Eq.] 2.33E-2
Formation potential of tropospheric ozone photochemical oxidants [kg ethene-Eq.] 1.68E-2
Abiotic depletion potential for non-fossil resources [kg Sb-Eq.] 4.48E-4
Abiotic depletion potential for fossil resources [MJ] 1.00E+3
RESULTS OF THE LCA - RESOURCE USE: 1 m³ Ytong® Autoclaved Aerated Concrete
Parameter Unit A1-A3
Renewable primary energy as energy carrier [MJ] 1.98E+2
Renewable primary energy resources as material utilization [MJ] 1.65E+2
Total use of renewable primary energy resources [MJ] 3.63E+2
Non-renewable primary energy as energy carrier [MJ] 1.02E+3
Non-renewable primary energy as material utilization [MJ] 6.87E+1
Total use of non-renewable primary energy resources [MJ] 1.09E+3
Use of secondary material [kg] 0.00
Use of renewable secondary fuels [MJ] 0.00
Use of non-renewable secondary fuels [MJ] 0.00
Use of net fresh water [m³] 2.47E-1
RESULTS OF THE LCA – OUTPUT FLOWS AND WASTE CATEGORIES:
1 m³ Ytong® Autoclaved Aerated Concrete
Parameter Unit A1-A3
Hazardous waste disposed [kg] 4.02E-6
Non-hazardous waste disposed [kg] 1.45E+1
Radioactive waste disposed [kg] 3.21E-2
Components for re-use [kg] 0.00
Materials for recycling [kg] 0.00
Materials for energy recovery [kg] 0.00
Exported electrical energy [MJ] 0.00
Exported thermal energy [MJ] 0.00
Note on the first indicator in the third table “Hazardous waste for landfilling”: in accordance with the /DIN EN
15804/, hazardous waste for landfilling is modelled until it reaches its end-of-waste status.

6. LCA: Interpretation
Within the framework of a dominance analysis, it is elements) impact category. The binding agents have a
apparent that the environmental impacts of AAC relevant influence here.
manufacturing are dominated by the preliminary Both the binding agents and aluminium have a relevant
products in most impact categories. Energy influence on the ozone depletion potential (ODP). All
requirements only have a significant influence during other categories are dominated by the binding agents
manufacturing in the fossil abiotic depletion of
resources (ADP fossil) impact category.
The anhydrite has a significant impact in the
elementary abiotic depletion of resources (ADP

6 Environmental Product Declaration Xella Baustoffe GmbH – Ytong® Autoclaved Aerated Concrete
7. Requisite evidence
A manufacturer's declaration is available according to dispenses with a requirement for any additional
which the composition of base materials, the controls. From a radiological perspective, the natural
manufacturing process and product features of the radioactivity of the building material permits unlimited
Xella® products under review have remained use thereof.
unchanged since the evidence outlined below was
issued. Accordingly, the evidence applies in full.
7.2 Leaching
7.1 Radioactivity Leaching by landfilled AAC is of significance for
Method: Measurements of the nuclide content in assessing its environmental impact after use. /LGA
Bq/kg, determining the Activity Index I 2007/, /LGA 2011/
Summarising report: /BfS-SW-14-/12/, Salzgitter, Measuring agency: LGA Institut für Umweltgeologie
November 2012 und Altlasten GmbH, Nuremberg
Result: The samples were evaluated in accordance Result: All criteria for landfilling in class I landfills are
with the /European Commission Guideline "Radiation complied with in accordance with the Landfill
Protection 112"/ (Radiological Protection Principles Ordinance /DepV/ dated 27.04.2009 applicable in
concerning the Natural Radioactivity of Building Germany. In accordance with the Council Decision
Materials, 1999). The Index values I established are in (2003/33/EC) dated 19 December 2002, AAC is to be
all cases lower than the exclusion level which allocated to the “Non-hazardous waste” landfill class.

8. References
und Konstruktion von Mauerwerksbauten - Teil 1-1:
Institut Bauen und Umwelt Allgemeine Regeln für bewehrtes und unbewehrtes
Institut Bauen und Umwelt e.V., Berlin (pub.): Mauerwerk; Deutsche Fassung
Generation of Environmental Product Declarations
(EPDs); DIN EN 1996-1-1/NA/A2: 2015-01; Nationaler Anhang
General Principles - National festgelegte Parameter - Eurocode 6:
for the EPD range of Institut Bauen und Umwelt e.V. Bemessung und Konstruktion von Mauerwerksbauten -
(IBU), 2015/10 Teil 1-1: Allgemeine Regeln für bewehrtes und
www.ibu-epd.de unbewehrtes Mauerwerk; Änderung A2

/ISO 14025/ DIN EN 1996-2: 2010-12; Eurocode 6: Bemessung

DIN EN /ISO 14025:2011-10/, Environmental labels und Konstruktion von Mauerwerksbauten - Teil 2:
and declarations — Type III environmental Planung, Auswahl der Baustoffe und Ausführung von
declarations — Principles and procedures Mauerwerk; Deutsche Fassung EN 1996-2:2006 +
AC:2009
/EN 15804/
/EN 15804:2012-04+A1 2013/, Sustainability of DIN EN 1996-2/NA: 2012-01; Nationaler Anhang -
construction works — Environmental Product National festgelegte Parameter - Eurocode 6:
Declarations — Core rules for the product category of Bemessung und Konstruktion von Mauerwerksbauten -
construction products Teil 2: Planung, Auswahl der Baustoffe und
Ausführung von Mauerwerk
CPR: Regulation (EU) No 305/2011 of the European
parliament and of the council of 9 March 2011 laying DIN 4108-4: 2017-03 Wärmeschutz und Energie-
down harmonised conditions for the marketing of Einsparung in Gebäuden - Teil 4: Wärme- und
construction products and repealing Council Directive feuchteschutztechnische Bemessungswerte
89/106/EEC
DIN 4166: Porenbeton-Bauplatten und Porenbeton-
DIN EN 13279-1:2008-11; Gipsbinder und Gips- Planbauplatten. Ausgabe: 1997-10
Trockenmörtel - Teil 1: Begriffe und Anforderungen;
Deutsche Fassung EN 13279-1:2008 DIN EN 459-1: 2010-12; Baukalk - Teil 1: Begriffe,
Anforderungen und Konformitätskriterien; Deutsche
DIN EN 12664: 2001-05; Wärmetechnisches Verhalten Fassung EN 459-1:2010
von Baustoffen und Bauprodukten - Bestimmung des
Wärmedurchlasswiderstandes nach dem Verfahren mit DIN EN ISO 717-1:2013-06; Akustik - Bewertung der
dem Plattengerät und dem Wärmestrommessplatten- Schalldämmung in Gebäuden und von Bauteilen -
Gerät - Trockene und feuchte Produkte mit mittlerem Teil 1: Luftschalldämmung
und niedrigem Wärmedurchlasswiderstand; Deutsche
Fassung EN 12664:2001 EAKV: Europäischer Abfallkatalog EAK oder
„European Waste Cataloge EWC“ in der Fassung der
DIN 20000-404: 2015-12; Anwendung von Entscheidung der Kommission 2001/118/EG vom 16.
Bauprodukten in Bauwerken - Teil 404: Regeln für die Januar 2001 zur Änderung der Entscheidung
Verwendung von Porenbetonsteinen nach DIN EN 2000/532/EG über ein Abfallverzeichnis
771-4:2011-07
DIN EN 197-1: 2011-11; Zement - Teil 1:
DIN EN 1996-1-1: 2013-02; Eurocode 6: Bemessung Zusammensetzung, Anforderungen und

7 Environmental Product Declaration Xella Baustoffe GmbH – Ytong® Autoclaved Aerated Concrete
Konformitätskriterien von Normalzement (BGBI I S. 900); zuletzt geändert durch Art. 7 V vom
26.11.2010
DIN EN 680: 2005-12; Bestimmung des Schwindens
von dampfgehärtetem Porenbeton BfS-SW-14-/12: Gehrke, K. Hoffmann, B., Schkade,
U., Schmidt, V., Wichterey, K.: Natürliche
EN 771-4: 2015-11; Festlegungen für Mauersteine - Radioaktivität in Baumaterialien und die daraus
Teil 4: Porenbetonsteine; Deutsche Fassung EN 771- resultierende Strahlenexposition - BfS-SW-14-/12,
4:2011+A1:2015 urn:nbn:de:0221-201210099810, Salzgitter, 2012

EN 13501-1:2010-01 +A12009: Klassifizierung von Richtlinie der Europäischen Kommission

Bauprodukten und Bauarten zu ihrem Brandverhalten - "Radiation Protection 112": European Commission:
Teil 1: Klassifizierung mit den Ergebnissen aus den Radiological Protection Principles concerning the
Prüfungen zum Brandverhalten von Bauprodukten Natural Radioactivity of Building Materials, 1999

EPD Porenbetongranulat: LGA 2007 Kluge, Ch.: Auslaugtests an Porenbeton zur

Ytong® - Granulat Bewertung von Umweltrisiken im Bezug zu den
EPD-XEL-20170148-IAD-1-DE Geringfügigkeitsschwellen (GFS) der LAWA (IUA
2007249), LGA Institut für Umweltgeologie und Alt-
Produktkategorieregeln für Bauprodukte Teil B: lasten GmbH, Nürnberg 2007, 19 S.
Anforderungen an eine EPD für Porenbeton.
https://epd-online.com LGA 2011 Kluge, Ch.: Untersuchung von Porenbeton
hinsichtlich der Entsorgung (IUA2011170), LGA Institut
Entscheidung des Rates (2003/33/EG) vom 19. für Umweltgeologie und Altlasten GmbH, Nürnberg
Dezember 2002 zur Festlegung von Kriterien und 2011, 10 S.
Verfahren für die Annahme von Abfällen auf
Abfalldeponien gemäß Artikel 16 und Anhang II der GaBi ts
Richtlinie 1999/31/EG; Rat der europäischen Union; GaBi ts dataset documentation for the software-system
veröffentlicht im Amtsblatt der Europäischen and databases, LBP (University of Stuttgart) and
Gemeinschaften; Brüssel; 19. Dezember 2002 thinkstep AG, Leinfelden-Echterdingen, 2016
(http://www.gabi-
DepV (2009): Verordnung über Deponien und software.com/deutsch/databases/gabi-databases/)
Langzeitlager – Deponieverordnung vom 27.04.2009

8 Environmental Product Declaration Xella Baustoffe GmbH – Ytong® Autoclaved Aerated Concrete
Publisher
Institut Bauen und Umwelt e.V. Tel +49 (0)30 3087748- 0
Panoramastr. 1 Fax +49 (0)30 3087748- 29
10178 Berlin Mail info@ibu-epd.com
Germany Web www.ibu-epd.com

Programme holder
Institut Bauen und Umwelt e.V. Tel +49 (0)30 - 3087748- 0
Panoramastr 1 Fax +49 (0)30 – 3087748 - 29
10178 Berlin Mail info@ibu-epd.com
Germany Web www.ibu-epd.com

Author of the Life Cycle

Assessment Tel 0049 711 34 18 17-0
thinkstep AG Fax 0049 711 341817-25
Hauptstraße 111 Mail info@thinkstep.com
70771 Leinfelden-Echterdingen Web www.thinkstep.com
Germany

Owner of the Declaration

Xella Baustoffe GmbH Tel 0049 203 8069002
Düsseldorfer Landstraße 395 Fax 0049 203 8069540
47259 Duisburg Mail info@xella.com
Germany Web www.ytong-silka.de