Ready mixed concrete is defined in the ASTM C 94 standard and specified for cast-in-place, reinforced and/or post-tensioned structural conditions. It combines hydraulic binder, primarily portland cement but also supplementary materials such as Class F or Class C fly ash, slag or pozzolan; chemical or mineral admixtures; sand, gravel or Read more…
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…