对水泥水化过程中泥浆微结构的演化进行模拟是揭示水化机理、预测性能和改进水泥设计的有效手段。迄今为止，人们仍未能对水泥微结构的演化过程给出完整统一的数学描述，在计算机模拟方面也尚未解决高度逼真的微元外貌描述方法及展示技术、也无法准确地控制模拟微元的演化速率。为解决该问题，本项目将在先期研究基础上进一步探索基于实际数据和移动最小二乘曲面的水泥水化微结构演化过程反向建模问题。采用显微扫描仪获取水泥微元的系列演化图像并经三维配准、边缘检测、分割及合成得到随时间演化的水化过程中各种物相的真实轮廓；然后以该轮廓为指导，得到可描述整体三维轮廓的移动最小二乘曲面模型；根据移动最小二乘曲面模型在不同时间点的参数时间序列，利用进化计算为其构建参数动力系统来控制水化速率。最终建立起面向真实三维结构的水泥水化微结构演化的连续系统模型，形成接近工程实用的仿真平台，为实现水泥材料的计算机辅助设计奠定坚实的理论基础。

Computer simulation for the microstructure evolution in cement hydration has been proven to be an effective method for understanding the cement hydration mechanism, predicting cement performance, and improving the design for cement materials. So far, scientists still failed to establish a unified mathematical description for the evolution of cement microstructure, failed to give highly realistic description method and display technology for the appearance of simulated cement phase microstructure, and also failed to control the evolution speed accurately. In order to solve the problem, based on the early research,this project will further explore the reverse modeling method for the microstructure in cement hydration based on actual images and Moving Least-squares Surface algorithm. The project first gets the real images from the microstructure evolution process in cement hydration using MicroCT, and then gets the temporal evolution process of real three-dimensional outline of different phases using image registration,image edge detection,image segmentation and synthesis. Secondly,guided by the obtained outline,the project achieves the moving least-squares surface model that can describe the three-dimensional profile of the whole surface. Thirdly,based on the parameter time series of moving least-squares surface model in different time points, Evolution Computation is adopted to build the kinetic system of parameters to control the hydration rate. Finally, a continuous system model for real 3D microstructure of cement hydration phase is established, an engineering practical simulation prototype for the evolution of cement hydration microstructure is constructed, which lay a solid theoretical foundation for computer aided design of cement materials.