【摘要】 为了促进钢铁冶金渣与化工废渣的高值化利用，以钢渣、矿渣、碱渣、脱硫石膏为原材料，通过活性激发剂与全固废材料间的组合协同作用制备海洋牧场人工鱼礁胶凝材料。胶凝材料中钢渣掺量为16%(质量分数，下同),矿渣为64%,碱渣为8%,脱硫石膏为12%,胶砂试块28 d抗压强度为52.6 MPa,在某些场合具有取代硅酸盐水泥的潜力。研究了东海海水条件下净浆试块浸泡15个月龄期内，钢渣与矿渣掺比对净浆试块抗压强度发展的影响，通过XRD、SEM、MIP等表征方法研究了全固废胶凝材料体系的水化产物。结果表明：钢渣和矿渣之间具有协同水化作用，其水化产物主要为钙矾石(AFt)、C-S-H凝胶和Friedel盐(FS),非晶态的C-S-H凝胶将针棒状的AFt与FS紧密结合在一起，这是整个体系强度的主要来源。本研究为大宗固废的妥善安置提供了科学依据。更多还原

【Abstract】 In order to promote the high-value utilization of iron and steel metallurgical slag and chemical waste slag, steel slag, blast furnace slag, soda residue and desulfurization gypsum were used as raw materials to prepare artificial reef cementitious materials for marine ranching through the combination and synergistic effect between active activator and solid waste materials. By mixing 16%(mass fraction, the same below) steel slag, 64% blast furnace slag, 8% soda residue and 12% desulfurized gypsum, the 28 d compressive strength of the mortar test block reaches 52.6 MPa, which has the potential to replace Portland cement in some cases. The influences of steel slag and blast furnace slag ratios on the compressive strength development of the net slurry test block soaked in seawater of East China sea in the 15 months were studied. Hydration products of the total solid waste cementitious materials system were studied through XRD, SEM and MIP characterization methods. The results show that there is a synergistic hydration between steel slag and blast furnace slag, and the main hydration products are ettringite(AFt), C-S-H gel and Friedel’s salt(FS). The amorphous C-S-H gel, which binds AFt to FS, is the main source of strength of the whole system. The research provides scientific basis for the proper settlement of large amount of solid waste.更多还原