Add to ORKGThe increasing use of nano-sized titanium dioxide in various building materials raises the question of the possible release of nanoparticles over the lifecycle of these materials. Ineris has completed two studies on this topic: a first on the characterization of the release of aerosols under mechanical stress, the second on the release of particles in water by building materials during leaching experiments. Self-cleaning tiles covered with a coating containing nanosized titanium dioxide have been submitted to a standardized mechanical abrasion. Aerosols have been quantified in terms of nature and quantity. It appears that emissions from coated tiles are far more important than those produced by uncoated reference tiles. This is explained by...