Among steel slag, the real utilization of steel slag is after the formulation of JIS road steel slag standard in 1979. Then, on the basis of road subgrade materials, the utilization technology of new composite subgrade materials mixed with recycled concrete and soft foundation treatment materials is developed. The development of new composite foundation materials and steel slag materials for ports is introduced below.
Extended data:
The beginning of steel slag utilization;
Blast furnace slag is used as cement raw material, aggregate and civil engineering after water quenching, and slow cooling slag is used as subgrade material of road. Water-quenched slag has been used in cement for a century. Since the first blast furnace in Dong Tian of 190 1 Bagan Plant was put into operation, in order to effectively utilize the iron-making by-products, technology was introduced from Germany, and 19 10 used blast furnace slag for cement.
Subsequently, in 193 1, a cement pulverizer was set up in the Maeda area of Bagan Factory to formally produce blast furnace cement. At that time, portland cement clinker was purchased, and blast furnace water-quenched slag and gypsum were mixed into the clinker, which was crushed to make cement.
By 19 18, a cement kiln was built, and clinker with blast furnace water-quenched slag and limestone as the main raw materials began to be produced. Blast furnace cement is still produced by adding blast furnace water-quenched slag and gypsum into clinker.
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