Added bacterial film makes new mortar resistant to water uptake

Moisture can destroy mortar over time – for example when cracks form as a result of frost. A team of scientists at the Technical University of Munich (TUM) has found an unusual way to protect mortar from moisture: When the material is being mixed, they add a biofilm – a soft, moist substance produced by bacteria. (Mehr in: Pressemitteilungen – idw – Informationsdienst Wissenschaft)