I have heard of self healing vapor barriers before, and porous concrete but self healing concrete?
Now we have concrete that heals itself because it contains a limestone excreting bacteria that comes to life when exposed to corrosive water that penetrates the concrete. Hopefully it doesn't try and take over the world. It is Halloween afterall, what my kids need are self-healing teeth. So now that we have concrete you can pour water through and concrete that is living and can heal its self, when are we going to get concrete that can place itself and finish itself? Maybe its the Halloween talking, but things they are a changing; and its a little scary. That next slab you demo might just say....Ouch!
Keep an eye out for the Crete Monster, he maybe lurking in the shadows.