Energy and Emission Reduction Opportunities for the Cement ...
accounts for over 75% of all concrete production. Over 390,646,000 cubic yards (687,000,000 tonnes) of ready mixed concrete were produced in 2002. Concrete blocks and precast products account for 13%, onsite concrete mixing accounts for 6%, and the remaining 6% of concrete production is used in well lining, mining operations, and other activities.