کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
260788 503669 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Probabilistic assessment to predict the time to corrosion of steel in reinforced concrete tunnel box exposed to sea water
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Probabilistic assessment to predict the time to corrosion of steel in reinforced concrete tunnel box exposed to sea water
چکیده انگلیسی

This study concerned the service life prediction, in terms of chloride-induced steel corrosion, of a concrete tunnel-box structure placed on seabed. To calculate the time to steel corrosion, the rate of chloride transport in the identical concrete mix to the structure was tested, and the chloride threshold level for corrosion was assumed by a literature review from 65 published data. Then, the Monte Carlo Simulation was used to calculate the probability of steel corrosion and its corresponding service life, assuming that the corrosion initiates at 10% of the probability of corrosion. As a result, the service life depended on the time dependency of chloride transport. The service life was equated to 31, 51, 85, and 147 years, at 0.1, 0.2, 0.3 and 0.4 of the age factors, respectively, while the time independent model indicated only 27 years of the service life. Finally, methods to raise the service life were discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 23, Issue 10, October 2009, Pages 3270–3278
نویسندگان
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