Up until now, concrete cracks have been the nemesis of the construction industry. In fact, there’s an old joke that there are two types of concrete. The first type is concrete that has cracked. The second type is concrete that hasn’t cracked…yet. But is there something new on the way?

Concrete “flatwork,” that is, concrete poured in slabs for floors, sidewalks, driveways, and roads, is particularly prone to cracking. It will shrink as it “cures” and crack. And it will continue to swell and shrink when it gets warmer or cooler and be susceptible to developing more cracks. (more…)