institute for environment and development stØ wall case - optiroc denmark

Institute for Environment and Development STØ

Wall case - Optiroc Denmark

1.: Lightweight aggregate concrete (LWAC) incl. reinforcement, = 1600 kg/m3

2.: Insulation (Rockwool)3.: Brick4.: Mortar


Purpose• To be prepared for future market demands.• Learn more about LCA and LCA methodology.• Learn about own products and own processes.• Where in our production is the environmental

impact greatest?


FunctionThe function of the product is important for defining the functional unit. Following the LCA guideline, the function of the wall was described as:

’ climate shield (watertight, insulating), "face" of the building and should therefore have a nice appearance.’

In addition the wall has other defining parameters, such as heat and sound insulating properties. These should be included where they affect the performance and type and quantity of materials used. All utilities affecting the dimensions should be included in the functional unit, as far as possible.

The functional unit for this case is a Danish house wall, 2.8m high, enclosing a floor area of 10x10m (excl. doors and windows), with a 60 year life.


Mortar

LWA

LWAC element

production

Insulation production

TRP insulation TRP Mortar

Steel

TRP LWAC

elements

Additives

Maintenance (life span 60 years)

Demolition

Wall construction

Binders

Brick production

TRP bricks

TRP demolition waste TRP of filling material to next

life cycle

The Danish Wall Life Cycle

Landfill

0,035%

Cement

TRP CementTRP steel

TRP LWA

TRP flyash

Flyash

SandTRP sand


The main ingredients of the wallkg % of total mass

Elements LWA 2976 7,9

Steel 237 0,6

Admixtures (LWAC)

Flyash 520,8 1,4

Sand 8630,4 23,0

Cement 2752,8 7,3

Wall Elements 15117 40,3

Mortar 7529 20,1

Bricks 14490 38,6

Binders (stainless steel) 13 0,0

Insulation (rockwool) 376 1,0

very small amounts


Mortar

LWA

LWAC element

production

Insulation production

TRP Mortar

Steel

TRP LWAC

elements

Maintenance (life span 60 years)

Demolition

Wall construction

Brick production

TRP bricks

TRP demolition waste TRP of filling material to next

life cycle

LCA model

Landfill

TRP steel

TRP LWA

TRP insulation

Cement

TRP flyash

Flyash

Sand

TRP sand

TRP Cement


Data usedElements LWA

Trp LWASteelTrp SteelAdmixtures (LWAC)FlyashTrp FlyashSandTrp SandCementTrp CementElement production

Wall Trp elementsMortarTrp MortarBricksTrp BricksBinders (stainless steel)Insulation (rockwool)Trp InsulationWall construction

MaintenanceEnd of Life Demolition

Trp demolition wasteLandfill

References: Norwegian pollution control authority (report 99:04, 1997 data) and European Commission, MEET project, part of COST 319 programme, 1997

Data from 'cradle to gate', BEAT 2000 (Danish Building Research Institute)

Not includedData from 'cradle to gate', Rockwool and Danish Building Research Institute

Energy data from Danish Institute of Technology report

*Heavy Goods Vehicle, Denmark based on emissions from Norwegian lorries in 1997 and Denmark's diesel production and distribution

Data from 'cradle to gate', Optiroc Denmark and production groupHeavy Goods Vehicle, Denmark*, 100 km.Average European data 'from cradle to gate', World Steel OrganisationHeavy Goods Vehicle, Denmark*, 150 km.

Data from 'cradle to gate', Danish Institute of Technology report

Data from 'cradle to gate', Danish Institute of Technology report

Energy data from Danish Institute of Technology report

Heavy Goods Vehicle, Denmark*, 60 km.

Heavy Goods Vehicle, Denmark*, 60 km

Energy data from Danish Institute of Technology report, 99% re-use

No emissions data, only quantity of industrial waste



Heavy Goods Vehicle, Demnark*, 15 km

None needed within 60 years

Data from 'cradle to gate', BEAT 2000 (Danish Building Research Institute)Heavy Goods Vehicle, Denmark*, 25 km.

Data source/comments

Not includedBy-product from the steel industry, only transport burdens included




ResultsEnergy consumption for the main steps in the life cycle

Energy Consumption

0

20000

40000

60000

80000

100000

120000

Production ofother

materials

Element rawmaterials

Elementproduction

Construction Maintenance End of life Total

MJ

Bioenergy (recycled)

Fossil energy (recycled)

Hydropower (primary)

Bioenergy (primary)

Nuclear energy (primary)

Fossil energy (primary)


Energy consumption for raw materials production

Energy Consumption

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

100000

LWA Steel Cement Flyash Sand Bricks Insulation Mortar Totalt

MJ

Bioenergy (recycled)

Fossil energy (recycled)

Hydropower (primary)

Bioenergy (primary)

Nuclear energy (primary)

Fossil energy (primary)

Elements Other materials


Global Warming Potential for the main steps in the life cycle

Global Warming Potential

0

5

10

15

20

25

Production ofother

materials


Elementproduction


t C

O2-

equ

ival

ents

CO2 from recycled energy carriers

CO2-equivalents


Global Warming Potential for raw materials production

Global Warming Potential

0

2

4

6

8

10

12

14

16

18

20

LWA Steel Cement Flyash Sand Bricks Insulation Mortar Total

t CO

2-eq

uiv

alen

ts

CO2 from recycled energy carriers

CO2-equivalents



Eutrophication and Acidification for raw materials production

Eutrophication and Acidification

0

50

100

150

200

250

300

350


kg

Eutrophication, O2-equivalents

Acidification, SO2-equivalents



POCP for the main steps in the life cycle

Photochemical Ozone Creation Potential (Smog)

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

4,0

4,5

5,0

Production ofother

materials


Elementproduction


kg e

the

ne

-eq

uiv

ale

nts


POCP for raw materials production

Photochemical Ozone Creation Potential (Smog)

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

4,0


kg e

then

e-eq

uiv

alen

ts



Waste production for the main steps in the life cycle

Waste

0

100

200

300

400

500

600

700

Production ofother

materials


Elementproduction


kg

Hazardous waste

Industrial waste


Waste production for raw materials production

Waste

0

50

100

150

200

250

300

350

400

450

LWA Steel Cement Sand Other rawmaterials

Bricks Total

kg

Hazardous waste

Industrial waste


institute for environment and development stØ wall case - optiroc denmark

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