基于改进的CEMHYD3D模型模拟水泥水化微结构演变过程  

Simulation of Cement Hydration Microstructure Evolution Process Based on Improved CEMHYD3D Model

作　　者：吴大江[1] 佘伟[1] 缪昌文[1] 谢德擎 杨永敢 WU Dajiang;SHE Wei;MIAO Chanwen;XIE Deqing;YANG Yonggan(Jiangsu Key Laboratory of Construction Materials,Southeast University,Nanjing 211189,China)

机构地区：[1]东南大学土木工程材料江苏省重点实验室

出　　处：《建筑材料学报》2020年第1期11-17,共7页Journal of Building Materials

基　　金：国家重点研发计划(2017YFB0309904);国家自然科学基金资助项目(51508090,51890904);国家重点基础研究发展计划(973计划)项目(2015CB655100);高性能土木工程材料国家重点实验室开放基金资助项目(2016CEM005)

摘　　要：将二维与三维不规则颗粒的重构方法引入到CEMHYD3D模型之中,提出了改进的CEMHYD3D水化模型.利用该模型,分别对水泥基材料的水化进程、水化放热量、C-S-H含量、CH含量、孔隙率和孔隙连通度进行了模拟与验证.通过与实测数据(各组分含量、孔隙率、水化放热信息等)进行对比,验证了改进的水化模型具有较高的精度.Combined with the reconstruction method of 2D and 3D irregular particles,this method is introduced into the CEMHYD3D model.The hydration process,hydration heat,C-S-H content,CH content,porosity and pore connectivity were simulated and verified respectively.The results show that compared with the experimental data of components(each component content,porosity,hydration heat release information),the perfected paste hydration model is verified of higher precision.

关 键 词：水泥水化 模型 C-S-H 孔隙率 

分 类 号：TQ172.1[化学工程—水泥工业]