The roads must roll
It seems every state has the same joke: “What’s the state flower of ___? The orange traffic cone.” But a Purdue engineer and her lab are developing what they call “self-healing concrete” that has “curing agents” mixed in to repair itself.
When concrete cracks, the curing agents absorb water and feed it into chemical reactions. These reactions produce solid substances that seal off the crack, “healing” the concrete. The healing process also prevents water from seeping into the concrete and corroding steel or rebar reinforcement.