There are a lot of drivers for it, and they are ultimately creating opportunities for businesses. First of all, continuing urbanization means more construction of new buildings and demolition of the older ones from their way. At the same time, sustainability is emphasized more than ever, deployment of natural resources and circular economy thinking is on the rise. There is a need for alternatives.
Countries have reacted to this by changing legislation to favor the use of recycled materials more and more. The recycling of construction waste started around the 1990s with Germany and Japan leading the way. The early use cases had little or no restrictions at all on what characteristics the used concrete should have. Nowadays, use cases are becoming more sophisticated, keeping in mind the required strength of the materials, for example.
As an example of the latest legislation, the EU set a directive in 2008 that called its member countries to recycle 70% of construction and demolition waste by 2020. In 2018, the percentage was at 50%, but with some countries reaching up to 90%.
In addition, the costs of dumping demolition waste are constantly growing. The costs become even more significant, when the transport distance is long. So, instead of paying to get rid of the material, it is possible to recycle and sell it and even make a profit.