Design Method of Mix of Ready-Mixed Concrete to Manufacture Concrete Structures with Unit Weight of 2,700kg/m3 or More

摘要

The present invention, 23 to 34% by weight of coarse aggregate consisting of steelmaking slag and having a unit specific gravity of 2.8 to 3.5t/m 3 to prevent damage or loss by external force according to climate change in the ocean; 23-41 wt% of fine aggregates having a unit specific gravity of 2.8-3.5t/m 3 and consisting of steelmaking slag; 10-15 wt% of a binder having a unit specific gravity of 2.6~2.7t/m 3 and consisting of loess powder; 15 to 18% by weight of mixed cement; 4-7% by weight of water; and 4 to 6% by weight of an AD admixture, the coarse aggregate is made of a particle size of 5 to 25 mm, the fine aggregate is made up of a particle size of 0.5 to 5 mm, and the ocher powder is 0.15 to 5 mm of It consists of a particle size, and the mixed cement is made by mixing Portland cement, blast furnace cement, and fly ash in a weight ratio of 5: 4: 1, and the AD admixture is an acrylic thickener 1 to 100 parts by weight of a cellulosic thickener. 10 parts by weight, 1 to 10 parts by weight of polyethylene oxide-based thickener, and 1 to 3 parts by weight of propylene carbonate are dissolved in water to liquefy and dried to form a powder thickener, water-reducing agent and crude polycarbonate-based fluidizing agent The crude polycarboxylic acid-based fluidizing agent comprises 50 to 70 parts by weight of tetraethoxysilane, 30 to 50 parts by weight of polyvinyl acetate, and trimethylolpropane triglycy based on 100 parts by weight of ethyl methacrylate. It is composed of 10 to 20 parts by weight of dilether and 5 to 15 parts by weight of polydimethylsiloxane, and the specific gravity is 2,700 kg/m 3 or more.