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A method for determining buildings' material composition prior to demolition

A method for determining buildings' material composition prior to demolition
Fritz Kleemann
Jakob Lederer
Philipp Aschenbrenner
Helmut Rechberger
Johann Fellner
Journal Article
Building Research & Information
A prerequisite of the efficient recycling of demolition waste and its evaluation in terms of the material specific recycling
rates is information on the composition of the building material stock (as the source of future demolition waste). A
practical method is presented that characterizes the material composition of buildings prior to their demolition. The
characterization method is based on the analysis of available construction documents and different approaches of onsite
investigation. The method is tested in different buildings and the results from four case studies indicate that the
documents are useful to quantify bulk materials (e.g. bricks, concrete, sand/gravel, iron/steel and timber). However,
on-site investigations are necessary to locate and determine the trace materials such as metals (e.g. copper and
aluminium), or different types of plastics. The overall material intensity of the investigated buildings ranges from 270
to 470 kg/m3 gross volume. With ongoing surveys about the composition of different buildings, the collected data
will be used to establish a building-specific database about the amount of materials contained in Vienna's building stock.
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