| 摘要 |
PURPOSE: A aggregate composition for concrete or mortar using granulated blast furnace slag is provided to improve mobility and compressive strength of concrete or mortar by using blast furnace slag which has a unit weight of 1.35-1.75kg/L. CONSTITUTION: A aggregate composition for concrete or mortar using granulated blast furnace slag includes blast furnace slag which has a unit weight of 1.35-1.75kg/L. The blast furnace slag comprises 20-50 weight% of CaO, 10-60 weight% of SiO2, 5-20 weight% of Al2O3, 1-15 weight% of MgO, 0.5-10 weight% of T-Fe, and 0.1-10 weight% of SO3. The aggregate composition for concrete or mortar additionally includes cement. The cement and blast furnace slag aggregate are mixed in a weight ratio of 1:2-5. The manufacturing method of the aggregate for the concrete or the mortar comprises a step of manufacturing blast furnace slag which has unit weight of 1.35-1.75kg/L by pulverizing the blast furnace slag.
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