ConcCare®GGBFS is a by-product of iron manufacture and is chemically very consistent. When iron ore, limestone and coke are heated to an approximate temperature of 1500°C in a blast furnace, they melt to produce two products which are molten iron and molten slag. The process of granulating slag involves cooling molten slag through high-pressure water jets. This rapidly quenches the slag and forms granular particles. The granulated slag is further processed by drying and then grounded to a very fine powder. This process is called ground granulated blast furnace slag (GGBFS).
The use of ConcCare®GGBFS as a partial Portland cement replacement takes advantage of the energy invested in the slag making process and its corresponding benefits with respect to the enhanced cementitious properties of the slag. Grinding slag for cement replacement requires only about 25 percent of the energy needed to manufacture Portland cement. For more detailed information about ConcCare®GGBFS, we advise our valued customers to contact our concrete consultants to get a copy of JAS’s ConcCare®GGBFS User Guide.