加速氯離子擴散試驗之模式探討

• Main Author: 王春寶
• Other Authors: 葉為忠
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/64564315009695063877

碩士 === 國立海洋大學 === 河海工程學系 === 90 === In this thesis, a unified modified diffusion theorem, considering the consumption of chloride ions in the determine cell, to model the mass transportation of chloride ions for the accelerated chloride diffusion experiments is proposed. In this theorem, the effect of chloride consumption on the volumetric chloride-increasing rate is assumed to be constant (independent of time) based on the facts from experimental data. Furthermore, it is observed from the experiments that the consumption of chloride ions increases the volumetric chloride-increasing rate. From this fact, we proposed two mechanisms to explain the effects of chloride consumption: chloride consumption rate and sucking force due to chloride consumption. And the experimental data shows that the second mechanism is stronger than the first one. Using various experimental data, we have shown the validity of the current theorem. Basically, our theorem can obtain close diffusion coefficients for all kinds of accelerated chloride diffusion tests (two-cell or three-cell test).