| abstract |
The present invention relates to a secondary product such as a block, a brick, a panel, and the like, which is made of a binder composed of inorganic slag, lime, gypsum and silica fume, and an oil-inorganic composite cement concrete composition using an organic substance, casein. The present invention relates to an inorganic binder comprising 60 to 90 wt% of slag fine powder, 3 to 25 wt% of lime, 4 to 10 wt% of gypsum, 1 to 10 wt% of limestone fine powder and 0.1 to 5 wt% of silica fume as the clay, Inorganic composite cementitious soil concrete composition in which 10 to 200 parts by weight of casein is mixed with 100 to 10 parts by weight of 100 parts by weight of the inorganic binder, Wherein the mortar has a compressive strength of 25 MPa or more at 28 days of age and a pH of less than 9.0 at 91 days of age after mixing with water under the condition of 5 to 50 wt% of mortar (a mixed composition of mortar and inorganic binder) Secondary product ". |