limestone - problems need help please?

Question

what is the problem when we use limestone for buildings?

why is this problem worse tgoday than it was hundreds of years ago?

Answer 1

Acid rain!

Limestone dissolves relatively quickly in acids. An increase in the acidity of rain (from pollution) means that stuctural limestone will not last as long.

Keep in mind that I said limestone dissolves _relatively_ quickly. It dissolves a lot faster than granite, but it will still last a long time, even with acid rain.