采用SEM,XRD,TG-DSC等微观测试手段，探讨掺高钛矿渣-水泥复合胶凝材料体系的水化机理。研究结果表明：高钛矿渣主要由结晶性强的稳定矿物组成，水化活性低；高钛矿渣颗粒分散并填充水泥颗粒，明显改善浆体结构。水化反应早期，硬化浆体结构疏松，水化产物较少，有大量未被反应的稳定晶相。反应后期，Ca(OH)₂参与二次水化反应，强度稳定增长。

Hydration mechanism of cementitious composite based on high-titanium slag and cement was studied by micromorphology of hardened paste using SEM, XRD and TG-DSC. The results show as follows：High-titanium slag, whose hydration activity is quite low, is mainly composed of stable minerals with strong crystallinity. High-titanium slag particles can disperse cement particles as well as fill in between them to improve paste structure obviously. In the early period of hydration reaction, the hardened paste structure is loose and the hydration products are relatively less, and there still exist lots of unreacted stable minerals. In the late period of reaction, there is a secondary reaction of hydration between high-titanium slag and Ca(OH)₂, resulting in stable growth of mortar strength