Graph of world cement usage


Davis Tucker says:

Cement is mainly used to make concrete, and is sort of the "active ingredient" in concrete - it is combined with sand and gravel in roughly fixed proportions. So cement production can be considered a rough proxy for the total amount of construction going on in a country.

The growth in China, from 1 Gigatons to 1.3 Gigatons in two years is mindboggling, even India and Russia are interesting... and there's more to the story than that too.