以炉渣基复合胶凝材料为主要原料,研究不同激发剂对SCM-I型胶凝材料的激发效果并通过XRD与SEM分析,从微观结构与水化产物的角度探讨不同激发剂对SCM-I型胶凝材料强度的影响.结果表明:碱激发剂中氢氧化钠与氢氧化钙均具有一定的激发效果,添加氢氧化钙比未添加激发剂的28 d抗压强度提高了34.77%,而硅酸钠对强度的提高起到了抑制作用,在其掺量为0.75%时,抗压强度下降了45.15%,添加0.50%硫酸钠的28 d抗压强度提高7.90%,激发效果并不明显.氯盐激发剂中,添加1.00%的氯化钙与氯化钠,分别比未添加激发剂的28 d抗压强度提高了68.08%与5.62%.添加氯化钙后促水化反应的进一步进行,并生成大量的钙矾石;添加硅酸钠后抑制了C-S-H凝胶的生成,降低了胶凝材料的强度.%With the cementing materials based on furnace slag used as main raw material, this study analyzed the effects of different kinds of activators on SCM-I cementing materialsbased on furnace slag. The analysis of SEM and XRD, and perspectives of microscopic and hydration products were added to the study. The results show that alkali-activators like Ca(OH)2, NaOH have certain activation effect. The addition of Ca(OH)2 has increased the 28 d compressive strength of cementing materials by 34.77 %. Na2SiO3 has inhibitory effect on the strength when the mixing amount is 0.75 % and the strength has depressed by 45.15 % . The compressive strength increases 7.90 % when 0.50 % of Na2SO4 is added, which shows that the activation effect is insignificant. When 1.00 % of the mixing amount of chloride activators such as NaCl and CaCl2 is added, the compressive strength increasesby 68.08 % and 5.62 % respectively. CaCl2 promotes the hydration reaction and a lot of ettringite is formed. The addition of Na2SiO3 inhibits the formation of C-S-H gels, which declines the strength of the cementing materials
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