May lightning strike!
Several millions of tons of construction waste are produced every year in Germany. A considerable proportion of this is attributed to concrete – probably the most often used building material of the 20th and 21st century. „This is a huge material flow, but at the moment there is no effective recycling method for concrete rubble,“ explains Volker Thome of Fraunhofer Institute for Building Physics IBP from the Concrete Technology Group in Holzkirchen. The present method is to shred the concrete waste causing an enormous dust formation. In the best case, the stone fragments are used as sub-base...