عنوان پایان‌نامه
بررسی عمر مفید سازه‌های بتن‌آرمه در منطقه خلیج فارس در معرض نفوذ یون کلر با رویکرد احتمال‌اندیشانه
- رشته تحصیلی
- مهندسی عمران - مهندسی زلزله
- مقطع تحصیلی
- کارشناسی ارشد
- محل دفاع
- کتابخانه پردیس یک فنی شماره ثبت: 1475;کتابخانه مرکزی -تالار اطلاع رسانی شماره ثبت: 47311
- تاریخ دفاع
- ۱۴ مهر ۱۳۸۹
- دانشجو
- بنیامین قربانی
- استاد راهنما
- محمد شکرچی زاده
- چکیده
- ندارد
- Abstract
- In recent years, much research work has been carried out on durability and long-term performance of concrete structures in marine environment. In particular, much work has been carried out in order to obtain a better control of chloride penetration and corrosion of embedded steel, which represent the greatest threat to the safety and economy of the structures. Corrosion of reinforcement is the major cause of the deterioration of concrete structures exposed to chloride in Persian Gulf region that is affected by many factors. Silica fume and water to cement ratio would be considered as one of the factors simply influences the chloride diffusion into concrete. A durability model for the reinforcement corrosion, based on the second Law of Fick, is developed that takes into account the time dependant parameter for diffusion coefficient and the influence of temperature and humidity. As an extension of the model a probability-based software is proposed for the durability analysis. The parameters of the model have been discussed and the sensitivity of the model towards these parameters is analysed. Results show that the proposed software provides valuable information indicating the effect of each parameter on the outcome and the extent in which these parameters should be stochastically defined. The results from this investigation demonstrate that the analysis of the durability performance of the structures can be expanded and improved by using the proposed model, in relation to the traditional condition assessment.
