摘   要：分析了转炉钢渣的矿物组成和胶凝性能，研究了Na₂SO₄、CaCl₂、NaCl和海水对钢渣浆体和钢渣水泥浆体强度的影响。结果表明，钢渣粉3d的水化放热量仅为P·O 42.5水泥的7.5%，钢渣浆体7d和90d抗压强度只有0MPa和15.1MPa，所以钢渣粉自身水化能力很低，胶凝性很差。Na₂SO₄和CaCl2对于钢渣浆体有一定的激发效果，掺0.9% Na₂SO₄时激发效果最好，浆体3d和90d抗压强度比不掺激发剂的空白组提高了19.1%和8.2%。对于钢渣水泥浆体，掺1.2%CaCl₂的浆体强度最高，浆体3d和90d抗压强度分别比空白组提高了53.6%和16.9%。NaCl和海水对钢渣浆体和钢渣水泥浆体3d强度有明显的激发作用，但会使90d强度出现较明显的倒缩。

Abstract: The mineral composition and cementitious properties of the converter steel slag are analyzed. The influence of Na₂SO₄, CaCl₂, NaCl and seawater on the strength of steel slag slurry and steel slag cement slurry is evaluated. The results show that the hydration heat of steel slag powder is only 7.5% of P·O 42.5 cement at 3 days, and the compressive strength of steel slag slurry is 0MPa at 7 days and 15.1MPa at 90 days. So converter steel slag has low potential hydraulic property and poor cementitious activity. Na₂SO₄, CaCl₂, NaCl and seawater may promote the early strength of steel slag slurry and steel slag cement slurry. NaNa₂SO₄ and CaCl₂ had good activation effects on the steel slag slurry. CaCl₂ is the most effective activator and the compressive strength of steel slag cement slurry added with 1.2% CaCl₂ is increased by 19.1% at 3 days and 8.2% at 90 days respectively. The strength of steel slag cement slurry is the highest when the slurry is added with 1.2% CaCl₂ and the compressive strength is increased by 53.6% at 3 days and 16.9% at 90 days respectively. NaCl and seawater have significant activation on the strength of steel slag slurry and steel slag cement slurry at 3 days, however the strength at 90 days decreases remarkably.