LIGHT-WEIGHT FOAMED CONCRETE COMPOSITE FOR SECONDARY PRODUCTS AND A METHOD FOR MANUFACTURING CONCRETE SECONDARY PRODUCTS USING THE SAME

摘要

Provided are a light-weight foamed concrete composite for concrete secondary products and a method for manufacturing the concrete secondary products using the same, capable of showing a high strength performance without an autoclave curing. The light-weight foamed concrete composite according to the present invention is composed by mixing a composition including 25-44 wt% of cement, 0.5-18 wt% of an admixture composed of at least one of fly ashes and ground granulated blast furnace slag, 0.5-3 wt% of a gypsum, 28-35 wt% of a fine aggregate, 17-22 wt% of water, and 4-5 wt% of enclosed type foam, with a foam reinforcing agent of 0.01-1.0 parts by weight as an extra with respect to total 100 parts by weight of the cement, the admixture, and the gypsum. The fine aggregate includes 30-40 parts by weight of heavy sand having a grain fineness distribution of 0.9-1.7 mm as crushed sand, and 60-70 parts by weight of fine sand having a grain fineness distribution of 0.9 mm or less. The enclosed type foam is manufactured by mixing 95-99 parts by weight of water and 1-5 parts by weight of an animal foaming agent.