In addition to being used as the base material, it is also used as aggregate for asphalt mixture due to its excellent hardness and wear resistance. Reducing energy consumption, since a ton of slag cement requires nearly 90% less energy to produce than a ton of portland cement. The length of the first bin can be shortened to 2.6m and the second increased to 3.9m to enhance the grinding capacity of the ball mill. Secondly, transform the partition board to 2mm, so that the slag can be well broken in the first bin and the slag with particle size <2mm enters the second bin for grinding. Slag is a by-product from steel plants, which is obtained from blast furnaces, during the separation of iron from iron ore. Mass concrete utilizes the highest potential levels of slag percentage to provide effective heat mitigation and reduced thermal stress. Slag cement proportions of 40 to 50% normally optimize strength. It is called almighty engineering aggregate. As an oasis for children, the new space features a James River theme incorporating naturalistic elements of light and green space. How To Recover Free Gold Wires Using A Shaking Table? Slag cement, when used as a separate component in a concrete mixture, is specified through ASTM C 989 Specification for Ground Granulated Blast-Furnace Slag for Use in Concrete and Mortar. Slag Ground-granulated blast-furnace slag (GGBFS) is produced by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water, to produce a granular product that is then dried and ground into a fine powder. Blast furnace slag can be used as paving material after mechanically stabilizing. The use of slag cement with a Type I portland cement can provide equivalence to a Type II (moderate sulfate-resistant) or even a Type V (high sulfate-resistant) cement. Typical mechanical properties of air-cooled blast furnace slag: Put the slag into the roller crusher and the slag will be broken into a good cube shape with relatively few elongated fragments. Often, slag cement concrete that is many years old will manifest greening when the concrete is broken up (in the non-surface interior portions of the concrete). It is easy to process which enables the road can be opened to traffic immediately after the end of the work, and road compaction base can continue to be carried out even on rainy days, which is widely praised. The first United States production was in 1896. Ground granulated blast furnace slag (GGBFS) is designated in ASTM C 989 and consists mainly of silicates and aluminosilicates of calcium. Concrete properties can be improved using Fine Blast Furnace Slag (BFS). Ground granulated blast furnace slag is widely used with its characteristics of cost-effective, green effect, hydraulic property as raw material for cement, civil engineering works, fertilizer and so on. Concrete made of BFS aggregates can be pumped, placed and refined successfully. What Are the Uses of Blast Furnace Slag (BFS). Ground Granulated Blast Furnace Slag (GGBS) and Ordinary Portland Cement (OPC) [Quora] Chemical Composition of Ground Granulated Blast Furnace Slag. Use of slag cement in concrete reduces the environmental impact of concrete by: The Environmental Protection Agency recognizes the environmental benefits of using slag cement in concrete. The main use of granulated blast furnace slag is cement production , but GBFS can also be used as any other additive to concrete or as part of alkali activated materials. Grade 80 has a low activity index and is used primarily in mass structures because it generates less heat than portland cement. Because of the fertilizer components CaO, SiO2 and MgO in ground granulated blast furnace slag, it is used as calcium silicate fertilizer in rice cultivation. Slag cement is a hydraulic cement formed when granulated blast furnace slag (GGBFS) is ground to suitable fineness and is used to replace a portion of portland cement. Slag cement reduces the rate of heat rise in proportion to its quantity in a mixture. Use of Blast Furnace Slag Aggregate in Concrete K.G. Slag is primarily composed of CaO, SiO 2, aluminum oxide (Al 2 O 3), and magnesium oxide (MgO). The fineness of discharge can be controlled to 2-10mm with a handling capacity of 40 tons per hour. Reducing the "urban heat island" effect by making concrete lighter in color thus reflecting more light and cooling structures and pavements with exposed concrete. If heat curing is used (or ambient curing temperatures relatively high) higher levels within this range are common. Slag Cement Benefits and Use in Concrete. This causes an expansive reaction and resulting deterioration of the concrete structure.