混凝土硫酸盐侵蚀化学热力学和多尺度研究进展

Research progress on concrete attacked by sulfate based on chemical thermodynamics and multi-scale

总结了混凝土硫酸盐侵蚀在基于化学热力学理论、微观-细观结构分析、宏观性能、多尺度分析与建模等方面的研究成果,指出现有研究多基于微观、细观和宏观的单一尺度分析混凝土硫酸盐侵蚀性能劣化,有关混凝土硫酸盐侵蚀的跨尺度和跨层次耦合关联等方面研究极少,传统混凝土硫酸盐侵蚀损伤评价指标、表征方法和量化参数难充分反映硫酸盐侵蚀损伤的多样性。基于化学热力学和多尺度理论开展混凝土硫酸盐侵蚀损伤和动态演化研究更具现实意义。

The existing achievements of the durability issues of concrete sulfate attack,including the analysis of concrete sulfate attack based on the chemical thermodynamics theory,micro components,meso-scale damage and macroscopic performances of concrete attacked by sulfate,and the multi-scale damage of concrete sulfate attack for modeling,were concluded.The results manifest that the existing researches mostly base on singal-scale damage for concrete sulfate attack including micro,micro and macro scale.The explorations and researches on the concrete sulfate attack for the scale-span correlative coupling are still rare.Moreover,the traditional damage evaluation indicators reflect,characterizations,quantitative parameters cannot reflect variety damage of the concrete sulfate attack,which cannot quantify damage feature layer by layer of concrete surface cover and diversity damage modes.Therefore,it has some realistic significance to research the damage and dynamic evolvement process of concrete sulfate attack based on the chemical thermodynamics and multi-scale theory.