Concrete thinking

One of our Home & Garden columnists reminded me recently of the difference between concrete and cement. Cement is the dry powder that is mixed with other things (water, sand, gravel) to make concrete, which is the hardened stuff used for sidewalks and some roads. Cement is only cement as long as it’s dry. Another way to think of it is that cement is to concrete as flour is to bread.

If you are interested a more technical (and rather interesting) explanation, here is one from the WiseGeek.

This article was originally posted by the Raleigh News & Observer, a subsidiary of The McClatchy Co.; is posted here to provide continuity; and is copyright © 2011 The News & Observer Publishing Company, which reserves the right to remove this post.