Some Aspects of Recycling Concrete Crush for Thermal Heat Storage

Buildings are being demolished around year. This creates a lot of demolishing waste, which is then processed further by companies specialized, for example, crushing concrete. This crushed waste includes concrete crush and several other materials. The problem is that a lot of this concrete crush as well as other demolishing waste ends up in landfills in many countries like Finland. It can be, however, recycled or reused: some usages of the concrete crush are already suggested and tested. In this paper, we study some aspect of usability of concrete crush for thermal heat storages. These thermal heat storages can be used with renewable and non-renewable heat sources. They are also identified as an important factor to reduce the greenhouse gas emissions: for example, renewable heat can be collected and stored in the summer, and used from the storage in the winter time. Since the natural storages like aquafers might be not available or they are protected, artificial storages need to be constructed and used. Thus, using concrete crush for heat storages would help in recycling the demolishing waste as well as combat climate change.