Raw material blending silo, preheater tower and rotary kiln at National Cement Company of Alabama, Ragland. Production of Types I-V portland cement entails pyroprocessing of finely ground limestone, clay and other mineral sources selected to yield the basic chemistry of calcium, alumina, silica and iron. Clinker, the product of the Read more…
More commonly known as rebar, ASTM A615/A706 concrete reinforcing bar is milled in common diameters, #4 through #12, from Grades 40 to 120 carbon steel. The Concrete Reinforcing Steel Institute issued its second Industry Wide Steel Reinforcement Bar Environmental Product Declaration in September 2022. The carbon dioxide emissions factor in Read more…
ASTM C 90 concrete masonry is produced on automated machines that mold 8- x 16-in. or other sized units from dry, or zero slump mixes, with hydraulic press and vibration cycles. The robust vibration contributes to strength development with lower cementitious material content than conventional low to high slump concrete Read more…