Campers help researchers turn urine into concrete

Professor Lucio Blandini, head of the Institute for Lightweight Structures and Conceptual Design (ILEK), holds a piece of concrete made from urine. — Photo: Katharina Kausche/dpa

Concrete made from human urine may sound unusual but this is a research project at the University of Stuttgart.

Campers at a travel fair have donated litres of their urine in a bid to help build more sustainable structures in future.