Concrete, Stone & Masonry [BACK] Concrete information and resources for the building community and concrete industry. A great resource for professionals with loads of good information for everyone. Stone Care Techniques - The aim of this site is to provide more than a basic introduction to the characteristics of different types of stone that are used commercially, why these differences have such a dramatic effect on their performance and how these differences affect a successful stone maintenance program, and to provide helpful stone care guidelines to help you preserve and enjoy the aesthetic beauty of your stone. Brick - Everything you ever wanted to know about brick (and more) including technical information, an idea gallery, and where to buy brick. International Masonry Institute - IMI is a labor/management cooperative of the International Union of Bricklayers and Allied Craftworkers and the Contractors who employ its members. IMI offers design and technical assistance and will help you find skilled craftworkers in all of the trowel trades.