Heavy weight concrete composition using slag byproducts
Disclosed is a heavyweight concrete composition using slag byproducts, including: ground granulated blast furnace slag; slow-cooled electric-arc-furnace oxidizing slag or atomized steel slag used as a fine aggregate; a coarse aggregate; water; and a chemical admixture based on 100 parts by weight high-early-strength cement. Thus, the heavyweight concrete composition contains a large quantity of steel slag and blast-furnace slag that are byproducts in iron-making and steel-making processes, thereby remarkably reducing an amount of emission of carbon dioxide and maximizing the recycling of waste resources for preserving the natural environment. As a result, an eco-friendly heavyweight concrete product can be made.
1. A heavy weight concrete composition using slag byproducts comprising:
on the basis of 100 parts by weight high-early-strength Portland cement, 42 to 67 parts by weight ground granulated blast-furnace slag, 290 to 310 parts by weight slow-cooled electric-arc-furnace oxidizing slag having a density of 3.3 to 3.8 and used as a fine aggregate, 260 to 290 parts by weight coarse aggregate, and 40 to 45 parts by weight water.
2. The heavy weight concrete composition according to claim 1 , further comprising a chemical admixture for concrete.
3. A heavy weight concrete composition using slag byproducts comprising:
on the basis of 100 parts by weight high-early-strength Portland cement, 15 to 30 parts by weight ground granulated blast-furnace slag, 220 to 280 parts by weight atomized steel slag having a density of 3.4 to 3.6 and used as a fine aggregate, 230 to 300 parts by weight coarse aggregate, and 30 to 40 parts by weight water.
4. The heavy weight concrete composition according to claim 3 , further comprising a fiber reinforcement, a chemical admixture, or a combination thereof.