| 摘要 |
<p>PURPOSE: A composition for concrete manufacture using fluidized bed boiler dusts is provided to reduce a discharge amount of carbon dioxide by minimizing an used amount of cement while recycling dusts and industrial byproducts by using the fluidized bed boiler dusts and a blast furnace slag powder instead of cement. CONSTITUTION: A composition for concrete manufacture using fluidized bed boiler dusts comprises 100.0 parts by weight of the fluidized bed boiler dusts, 200 to 500 parts by weight of a blast furnace slag powder based on the 100.0 parts by weight of the fluidized bed boiler dusts, and 5 to 7 parts by weight of anhydrous gypsum based on the 100.0 parts by weight of the fluidized bed boiler dusts. The fluidized bed boiler dusts comprises 1 to 5 parts by weight of a silicon dioxide, 1 to 5 parts by weight of an aluminum oxide, 0.1 to 1 part by weight of an iron oxide, 30 to 70 parts by weight of a calcium oxide, and 10 to 60 parts by weight of a sulfur oxide. Also, 150 to 1,000 parts by weight of cement based on 100.0 parts by weight of the fluidized bed boiler dusts is added thereto. The composition for manufacturing concrete further includes at least one selected from a limestone powder, a silica powder, fly ash, metakaolin, and silicalcium. [Reference numerals] (AA) Conventional concrete; (BB) Example 1; (CC) Example 2</p> |
