【摘要】 为了研究混凝土中硫酸根离子与氯离子扩散的相互影响，引入硫酸根离子侵蚀损伤演化理论，分析了硫酸根离子侵蚀对混凝土孔隙率的影响和混凝土孔隙率对氯离子扩散的影响，提出了考虑硫酸根离子影响的氯离子扩散系数。通过菲克定律推导出的一维扩散模型对实验数据进行拟合，确定了待定系数a_D的值，建立了考虑硫酸根离子侵蚀损伤演化的氯离子扩散模型。更多还原

【Abstract】 In order to study the mutual influence of sulfate ion and chloride ion diffusion in concrete, the evolution theory of sulfate ion erosion damage was introduced to analyze the influence of sulfate ion erosion on concrete porosity and the influence of concrete porosity on chloride ion diffusion, and the chloride ion diffusion coefficient considering the influence of sulfate ion was proposed.The one-dimensional diffusion model derived from Fick’s law was used to fit the experimental data and determine the value of the undetermined coefficient at different times.In addition, the chloride ion diffusion model considering the erosion damage evolution of sulfate ions was established by a_D.更多还原