钢渣制备高强度人工鱼礁混凝土

以79%的矿渣、15%的钢尾渣、5%的脱硫石膏以及1%的水泥熟料制备的胶凝材料代替水泥，以热闷法稳定化的钢尾渣为骨料，制备出了强度达到61 MPa的人工鱼礁混凝土。在该混凝土中，水泥熟料所占比例为0.16%，钢渣比例超过了99%。利用XRD和SEM方法分析净浆的水化过程，结果表明，体系水化主要生成AFt相和C-S-H凝胶，并对强度的增长起了主要作用。

High Strength Artifical Reefs Concrete Made from Steel Slags

79% granulated high furnace slag and 15% steel slag and 5% flue gas desulphurization(FGD) gypsum was mixed with 1% cement clinker to produce a cementitious material.The ordinary portland cement can be totally substituted by such a mixed cementitious material with iron and steel slags as its major components in preparing the concrete for building high-strength artificial reefs.A concrete with a compressive strengh of 61 MPa can be prepared by using such a mixture as a cementitious material and steel slag grains as its fine and coarse aggregats which have been stubilized by a hot-simmering method.The cement clinker content of the concrete was 0.16%,and solid waste ratio reached over 99%.Hydration processes of net slurry were analysized by XRD and SEM methods.The results show that the early hydration products in the system are mainly AFt and C-S-H gel.The strength growth is mainly contributed by these two phases.