What has the cement industry done to improve its manufacturing process?
A. New technology and equipment, coupled with increased use of alternative fuels and raw materials, have reduced energy consumption by one-third since 1975. Today, cement and concrete can contain recycled materials that utilize industrial byproducts that would otherwise clog landfills. The industry has reduced its own waste by recycling more than 75 percent of cement kiln dust (CKD) nearly eight million tons each year directly back into the cement kiln as raw material. By doing so, manufacturers conserve energy and reduce use of limestone and other virgin raw materials.
