Here is an innovation that should appeal to all homeowners who dread the bill of remodeling. We have developed a concrete that cleans itself. In some communes, in Paris for example, the renovation is compulsory every 10 years at least. But that can end up encrypting. A team of Chinese and Greek researchers has therefore created a superhydrophobic concrete, that is to say on which liquids have difficulty adhering (a bit like a raincoat).
Suddenly, the rainwater will simply slide on the facade. Nothing will hang. There will be no more traces of runoff, more fungi that grow or mosses that grow. And it works against the traces of pollution, those blackening the facades. Because having a material that slides water, it also slips dust and fine particles. Especially when one is vertical as on a wall of facade.
A much lighter cleaning bill
There are already said coatings that work the same way. They are used, for example, to avoid graffiti. But this is the first time that we can give these kinds of characteristics to the concrete itself, without impacting its resistance. That means we can scribble on the walls and it will not mark. In fact, it will be as if one were trying to write on a window. It will mark a little bit. But it will be very easy to clean with a little water.
Of course, if you use a marker or spread some junk on the wall, you end up dirtying it. But the cleaning bill will be much lighter and we will certainly no longer need a cleaning up every ten years. It is for all these reasons that this concrete interests the promoters.