Water slag has potential hydraulic cementing performance, which can show the hydraulic cementing performance under the action of activators such as cement clinker, lime and gypsum, and is a high-quality cement raw material. Water residue can be used as cement mixture or made into clinker-free cement.
Among steel slag, the real utilization of steel slag was after the JIS standard for road steel slag was formulated in 1979. Then, based on road subgrade materials, the utilization technology of new composite subgrade materials mixed with recycled concrete and soft foundation improvement materials was developed. The development of new composite subgrade materials and steel slag materials used in harbor are introduced below.
Extended information:
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 for roads. Water-quenched slag has been used in cement for a century. Since the first blast furnace in Dong Tian, the original Bagan Factory was opened in 191, in order to effectively utilize the iron-making by-products, technology was introduced from Germany, and blast furnace slag was used in the experimental study of cement in 191.
Then in 1931, a cement pulverizer was set up in Maeda area of Bagan Factory, and the blast furnace cement was officially produced. At that time, portland cement clinker was purchased, and blast furnace water-quenched slag and gypsum were mixed in the clinker and crushed to produce cement.
By 1918, 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 mixing blast furnace water-quenched slag and gypsum in clinker.
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