摘　要：不同來源礦渣因其微觀結構的差異導致活性差別很大，利用紅外光譜分析方法從礦渣網(wǎng)絡聚合度角度進行礦渣水化活性機理的研究與探討。結果表明：礦渣玻璃體由于表面存在Si-O和Al-O鍵,不同來源礦渣Si-O和Al-O鍵明顯不同，硅酸根離子的溶出相對來說比較難，因此早期只有少量單硅酸根離子聚合形成水化硅酸鈣凝膠。隨著水化的不斷進行，會有更多的硅和鋁暴露在表面，礦渣水化加速，單硅酸根離子聚合的速度也加速，表現(xiàn)在后期礦渣石灰的強度有較大的增長。

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FT-IR analysis of polymerization degree of different origin slag
Huang Xinliang1,Zhou Shenbo2,Liang Xiaoying3,Ren Tingting1,He Fan1(1.Shanxi Building Research Institute, Shanxi,Xian,710082)
Abstract: Different origin of slag has quite different hydration activity due to the discrepancy in micro-sturcture, and by infrared spectroscopic analysis method,the hydration activity mechanism of slag was studied from the angle of polymerization degree. the results show that different origin of slag has quite different Si-O and Al-O chemical bond, therefore only a bit of silicate root polymerize to form gel at early hydration ages. Along with the hydration, there will be more silicon and aluminum exposure to the surface, slag hydration was accelerated, single silicate root ion polymerizing to form silicate speed up. As a result, the strength of the slag lime system increase larger at later hydration ages.
Key words: blast furnace slag; polymerization degree; Si-O bond; Al-O bond; infrared spectroscopic analysis