Can waste materials be stiffened by biomineralization and function as an alternative to sand?

Growing populations, increasing urbanisation and infrastructure have risen the global demand of sand, a limited resource, to an average of 18 kg per person each day, causing political and environmental problems.

Concreation is a material research, focusing on finding a substitute for sand. In collaboration with the Department of Bioprocess Engineering at Beuth University of Applied Sciences Berlin a series of material experiments was conducted trying to solidify waste materials. Certain kinds of bacteria are able to build a crystalline calcium-carbonate structure, glueing single particles together and thus creating a composite material, which is stable, lightweight and insoluble in water.

These positive properties can open up unknown possibilities of structural engineering, enabling architecture to grow in organic shapes.

Supervisor(s)

Prof. Dr. Zane Berzina, Prof. Barbara Schmidt, Prof. Steffen Schuhmann, Prof. Susanne Schwarz-Raacke, Essi-Johanna Glomb, Julia Wolf