Self-Healing Concrete Could Fortify America’s Crumbling Roads

Recent innovations in concrete technology point to stronger and higher-performing highways and bridges in the future. Some products are already on the market; others are a long way off. It may sound far-fetched, but the technology exists for self-healing concrete. The auto-mending material contains limestone-producing bacteria that activates when wet. The bacteria can lie dormant for up to 200 years, according to the European Patent Office, where the technology is registered.