Self-healing concrete can reduce the carbon footprint of the building sector

Conventional concrete is one of the most used building materials in the world. Production of cement, which is a main component of concrete, uses 10–15% of total industrial energy and causes 5–8% of the CO2 emissions caused by humans.

Conventional concrete easily cracks; cracks can cause structural failure and make the building less durable and safe. To make concrete more environmentally friendly, self-healing concrete has been developed. In this article is explained how this works:
https://medium.com/climate-conscious/how-co2-emissions-can-be-reduced-with-self-healing-concrete-d0ecab049545

Concrete that has healed itself (credit: studiojaskrawo on Shutterstock)