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Re-use, recyling and future of demolished buildings
construction and demolition waste (C&D) 2009 : 6,9 million t of C&D accrued in Austria 12% of the total amount of waste generated in
Austria Law since 2011:
*) implentation of waste prevention programmes*) support of the life cycle thinking of products to reduce negative environmental impacts*)Strengthening of responsibility of producer
Until 2020: Austria commits itself to achieve a recycling rate of 70% EU-Waste Framework Directive
Buildings in the course of times
The increasing number of used building materials inhibits recycling
Building constructed in 1900:
86% brickwork5% stones & concrete5% slag3% wood0,5% metals
Building constructed in 1970:
40% brickwork46% stones & concrete5% slag3% wood2% metals
C&D waste in Austria in 2009
increasing of: C&D and Landfilled masses, decreasing of: free landfill capacity
Nomenclature according to ÖNORM S2100
Rubble (without wastefrom building site)
Roadway rubble /bitumen and asphalt
concrete rubble
track ballast
waste from building site
Quantity in (t)
3.200.000
1.300.000
1.700.000
370.000
300.000
Act on the Remediation of Contaminated SitesThe ALSAG fee has to be payed for theinsertion of residues above and belowground level;Exemption from ALSAG-fee, if Quality assurance Permissible at technical necessary
extent Approved building activity
Contaminants in buildings Sanitary and electricity installation (e.g. PVC,
heavy metals) Tiles (e.g. heavy metals) Gypsum plaster boards and
planks (e.g. sulphate) Window & doors (PVC) Sealants and sealing sheets Floor coverings Wall & roof cladding In further times these materials used to be
appreciated but now they are contaminants
Recycling orientated dismantlingThe prospecting of contaminants avoidsbad surprises Consider historic usages Site inspection Develop sampling plan Implement analytics Develop concepts for dismantling Develop wast management concept Implement dismantling
Preparation of C&D waste / assessment of demolition work
Facturing – sieving – magnetic iron separator in mobile and stationary facilities to produce pure and high – qualitative secondary resources
The recycling orientated dismantling and the separation of light weight fraction ensure a high qualitiy of the RC material
Product life cycles of Fate of contaminants in C&D waste Point sources Manual separation Planar sources Separation machinesFor a high quality recyling ensures
secondary resources for next generationsMerging energy & resource efficiency
Strategy for the sustainable use
Support market Precise legal framework Prohibition of landfilling recycable materials Additional taxes on primary resources Obligatory utilization rate for recycled materials
in pubic construction ventures Promotion of innovation for architects and
planners Promotion of innovation for companies
regarding the development and production of recycled building materials
Support acceptance Raise awareness for the conservation of
resources in the construction industry A precise legal framework supports the
transition of C&D was from waste to product Promotion of best-practice examples Production of quality-controlled secondary
raw materials Promotion of the acceptance for secondary
raw materials on the part of architects and planners
Support quality Promotion of recyclable and dismantable building
material Implementation of building passport system for better
documentation of materials in the building Conduction of obligatory prospecting of contaminants
before demolition Promotion of the recycling orientated dismantling
procedure Promotion of preparation technologies Strengthening of standardized quality assurance for RC
material – quality protection for RC building materials
Measures along life cycle stages Plan
Design for recycling concepts Buildings pass Subventions „buildings and sanify“ Ecologication of the Federal construction contacts Act
Building Obligatory prospection of contaminants and valuables Collaboration of building and waste management
administration Promotion of ecological housing advancement
Measures along life cycle stages Dismantle
Determination für end of waste Adaption of ALSAG-fee Strengthening of demolition notification Obligatory waste management concept for building
sites
Recylce Prohibition for landfillable material Strenghtening of Quality assurance for RC material RC quota for new buildings Ecologication of building material industry
Thank you for your attention!