Institute for Environment and Development  STØ Wall case - Optiroc Denmark

Institute for Environment and Development  STØ 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?

Institute for Environment and Development  STØ Function The 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.

Institute for Environment and Development  STØ 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 wasteTRP of filling material to next life cycle The Danish Wall Life Cycle Landfill 0,035% Cement TRP Cement TRP steel TRP LWA TRP flyash Flyash SandTRP sand

Institute for Environment and Development  STØ The main ingredients of the wall

Institute for Environment and Development  STØ 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

Institute for Environment and Development  STØ Data used

Institute for Environment and Development  STØ Results Energy consumption for the main steps in the life cycle

Institute for Environment and Development  STØ Energy consumption for raw materials production

Institute for Environment and Development  STØ Global Warming Potential for the main steps in the life cycle

Institute for Environment and Development  STØ Global Warming Potential for raw materials production

Institute for Environment and Development  STØ Eutrophication and Acidification for raw materials production

Institute for Environment and Development  STØ POCP for the main steps in the life cycle

Institute for Environment and Development  STØ POCP for raw materials production

Institute for Environment and Development  STØ Waste production for the main steps in the life cycle

Institute for Environment and Development  STØ Waste production for raw materials production