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为促进钢渣在水泥混凝土中的应用,通过X射线衍射分析、水化产物化学结合水量的测定、强度测试、粒度分析等方法研究了转炉钢渣的胶凝特性,并研究了钢渣细度对胶凝性能的影响。结果表明:纯钢渣与水拌合后可缓慢硬化,但钢渣的胶凝性能很弱;水泥和钢渣的水化过程相似,钢渣在早期的水化速率远低于水泥,但在后期尤其是养护90d后钢渣的水化速率高于水泥;增大比表面积可以提高钢渣的早期水化率,同时其后期水化率一定程度上增大,养护90d后其水化率降低,180d后不同比表面积的水化程度接近。
In order to promote the application of steel slag in cement concrete, the gelation characteristics of converter steel slag were studied by means of X-ray diffraction analysis, determination of the amount of chemical bonded water of hydration product, strength test and particle size analysis. The effects of slag fineness on gelling The impact of performance. The results show that pure steel slag can be slowly hardened after being mixed with water, but the gelling property of steel slag is very weak. The hydration process of cement and steel slag is similar, and the hydration rate of steel slag in early stage is much lower than that of cement. However, After 90 days, the hydration rate of steel slag is higher than that of cement. Increasing the specific surface area can increase the early hydration rate of steel slag, and the hydration rate increases to a certain extent in later stage. After 90 days of conservation, the hydration rate of steel slag decreases. After 180 days, The degree of hydration is close.