On Tuesday, Hanna Salmenperä, a senior advisor at the Finnish Environmental Institute, told YLE.
For example, in the demolition of a block of flats in Mäntsälä, Central Finland, an excellent recycling rate was achieved.
''T granted recycled status, but it could be utilised,'' said Jarno Salminen, the managing director of Maansiirto Harry Mäkelä.
Most of the waste that was buried as part of the demolition project was made up with asbestos.
The family-owned earth-moving company has adopted a front-loaded approach to raising the recycling rate in part because contractors that fail to meet the 70-percent standard are disqualified from projects by the city of Jyväskylä.
Europe's circular economy objectives for demolition projects have been raised. The European Commission defines circular economy as a system that maintains the value of products, materials, and resources for as long as possible and minimizes the generation of waste.
The objective of demolition projects is to process and channel waste streams in the right order, with the top priority being reducing the amount of harmful waste and waste in general. If re-use is not possible, the waste generated must be processed to ensure that it can be re-used or utilised for energy generation, for example.
If no type of re-utilisation is possible, waste should be disposed of according to regulations.
A land-use engineer at the city of Jyväskylä, Janne Tervo, said on Tuesday to YLE.
'' T have a lot of concrete and steel'', Salminen said.
Due to the presence of harmful substances such as asbestos, chemicals, oil, electrical and electronics waste, impregnated wood and polycyclic aromatic hydrocarbon compounds, a fully circular demolition project is not possible.