2 2 BINDER FOR SECONDARY CONCRETE PRODUCT AND MANUFACTURING METHOD OF SECONDARY CONCRETE PRODUCT

摘要

The present invention relates to a binder for secondary concrete products and a method for manufacturing secondary concrete products using the same. It relates to a binder for secondary concrete products that can minimize the most widely used type 1 ordinary cement in the manufacture of secondary concrete products, and a method for manufacturing secondary concrete products using the same. The binder for secondary concrete products according to the present invention contains 100 to 1,000 parts by weight of crushed blast furnace slag with a specific surface area of 4,000 cm 2 /g or more, and a CaO content of 20 to 70% by weight and SO 3 based on 100 parts by weight of Portland cement of type 1 Waste generated as a by-product in the desulfurization process of a steelworks having 0.5 to 1,000 parts by weight of bottom ash in a circulating fluidized bed boiler with a content of 3 to 30% by weight, and 10 to 50% by weight of Na 2 O and 10 to 50% by weight of SO 3 0.1 to 500 parts by weight of sodium sulfate.