水泥基材料孔结构与吸水性能关系研究进展

水分子通过各级孔道在水泥基材料内部传输,其流动携裹着侵蚀离子进入材料内部,会对材料性能产生不利影响。为深入了解水泥基材料的孔结构与吸水性能,本文对其相关力学理论研究成果进行了综述;比较了水泥基材料孔的分类方法,分析了孔结构的多种表征技术,介绍了其应用;重点阐述了水泥基材料渗透理论及毛细吸水力学与孔结构参数之间的关系;综述了国内外基于分子动力学理论水泥基材料纳米级孔道模拟的研究现状;对水泥基材料孔结构与吸水性能的关系进行了总结,并对此领域的研究方向进行了展望。

Research Progress on Relationship Between Pore Structure and Water Absorption Performance of Cement-Based Materials

Water molecules are transported inside the cement-based materials through all levels of pores, bringing corroding ions into the material, which have an adverse impact on the properties of the materials. In order to deeply understand the pore structure and water absorption performance of cement-based materials, the relevant literature reviews on mechanical theory research were conducted in this paper. The classification methods of the pore of cement-based materials were compared and the multiple technologies on characterization of pore structure were analyzed, as well as their applications were presented. In addition, it emphasized the permeability theory of cement-based materials and the relationship between capillary water absorption mechanics with pore structure parameters. Meanwhile, the paper reviewed the present scholars’ studies in terms of nano-scale pore simulation of cement-based materials based on molecular dynamics theory. Finally, it summarized the relationship between pore structure and water absorption performance and looked forward the prospect of research in this field.