CAJ | 학술논문

混凝土材料所具有的多孔隙结构是由其本身的物理、化学性质所决定的，而孔隙结构又决定了混凝土整体的强度和渗透性。将混凝土复杂的孔隙结构简化为单根毛细管，根据 Fick 定律和质量守恒原理推导出混凝土孔隙溶解控制方程，并运用 Bear 理论中关于多孔介质毛细孔渗透率的研究理论及饱和溶质运移扩散方程建立侵蚀模型。模拟结果表明，该模型能够有效地反映混凝土孔隙中固相钙离子溶解、浓度变化和孔隙边壁侵蚀厚度变化过程。
혼응토재료소구유적다공극결구시유기본신적물리、화학성질소결정적，이공극결구우결정료혼응토정체적강도화삼투성。장혼응토복잡적공극결구간화위단근모세관，근거 Fick 정률화질량수항원리추도출혼응토공극용해공제방정，병운용 Bear 이론중관우다공개질모세공삼투솔적연구이론급포화용질운이확산방정건립침식모형。모의결과표명，해모형능구유효지반영혼응토공극중고상개리자용해、농도변화화공극변벽침식후도변화과정。
The concrete material has a porous structure due to its own physical and chem ical properties, and the pore structure determ ines the strength and permeability of concrete. In this paper, the complex porous structure of concrete was simplified to the single capillary. According to the Fick's law and mass conservation principle, the dissolution equation of concrete pores was obtained, and the erosion model was established based on the research of capillary permeability of porous medium in Bear theory and saturated solute t ransport diffusion equations. The simulation results showed that the model can reflect the variations of dis-solution and concent ration of solid phase calcium ions and erosion thickness of side wall inpores.