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中文摘要：
采用固相法合成硅酸三钙（C3S）和阿利特,通过掺杂不同含量的MgO得到几种典型晶型的阿利特。利用X线衍射仪（XRD）测定阿利特的晶型,发现MgO掺杂量为0、05%、10%和20%（质量分数）时,阿利特在室温下能够分别以T1、T1＋M1、M1及M3型稳定存在。通过Image Pro Plus（IPP）软件对阿利特水化早期（3、7及14 d）样品的背散射电子像进行定量分析,测定不同颗粒尺寸范围内4种晶型阿利特的水化程度。结果表明：对水化活性最敏感的粒径范围为〉6-17μm,水化早期4种晶型阿利特的水化活性由小到大依次为T1、T1＋M1、M3和M1。
英文摘要：
Tricalcium silicate （C3S） and alite were synthesized by a solid-state method. Some typical modifications of the alite were obtained by doping different amounts of MgO and were characterized with X-ray diffraetometer （XRD）.Results showed that T1 ,T1 ＋M1 ,M1, and M3 modifications of alite were stabilized at room temperature when doped amounts were 0,0.5%, 1.0% and 2.0% MgO, respectively. The backscattered electron composition image （BEC） of early hydration periods （ 3,7 and 14 d） of the alite were quantitatively analyzed by using Image-Pro-Plus （IPP） software, and hydration degrees of the alite of different particle size ranges with 4 different modifications were measured.Results showed that the most sensitive particle size ranges to the hydration activity were 〉6 - 17 Ixm, and the hydration activity for the 4 alite modifications in early hydration periods was in the orders of T1 ,TI＋M1 ,M3, and M1.
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