What is the half life of concrete?

Concrete does not have a half-life in the same way radioactive materials do, as it is not a radioactive substance. Instead, concrete can deteriorate over time due to environmental factors, chemical reactions, and physical wear. Its lifespan can vary significantly, typically lasting from 50 to 100 years, depending on the conditions and maintenance. While it can degrade, it does not "decay" in a quantifiable half-life manner.