Repairing Cracks: Cutting-Edge Concrete with Bacteria

Concrete that doesn’t just sit there, but actively fixes itself when it gets damaged. That’s what scientists are working on with a type of concrete mixed with special bacteria. Here’s how it works: tiny bacteria are added to the concrete mix, but they stay dormant, like little living seeds. When cracks appear and moisture gets in, the bacteria wake up and do their job. They eat nutrients and produce a natural substance called calcium carbonate, which fills up the cracks and makes the concrete strong again. This is a big deal because concrete structures, like bridges and buildings, can get worn down by weather and time. But with this self-healing concrete, we might not need to fix them as often, saving us money and keeping structures standing longer. Scientists are now trying to find the best types of bacteria that can live in concrete's tough environment and work effectively over time. They’re also thinking about how much it will cost to make this concrete and how it might affect the environment. Teams are even looking into ways to make the bacteria stronger using genetic engineering and smart technology. This could change how we maintain our infrastructure, making our structures not just durable, but also capable of healing themselves.