| 摘要 |
PURPOSE: A drying shrinkage reduction type high intensity inorganic composition is provided to enhance durability and drying shrinkage resistance by not using cement as a binder. CONSTITUTION: A drying shrinkage reduction type high intensity inorganic composition is composed of 40-70 wt% of active loess having the particle fineness of 3,000-8, 000cm^2/g, 3-15 wt% of calcium hydroxide, quicklime or a mixture including calcium hydroxide and quicklime; and 5-30 wt% of limestone powder having particle fineness of 5,000-10,000cm^2/g, and 20-40 wt% of silica compound. The silica mixture is composed of one or more among blast furnace slag powder having the particle fineness of 3,000-8, 000cm^2/g, fly ash having the particle fineness of 3,000-8, 000cm^2/g, and silica fume having the particle fineness of 7,000-15, 000cm^2/g. The SiO2 content of the silica compound is 30-70 wt%. A manufacturing method of the active loess comprises a step of pulverizing waste ceramic, which was soft baked at 800 deg. Celsius or greater, into 5000-10000cm^2/g using a ball mill.
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