کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6718195 503531 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A Brownian motion simulation for the chloride diffusivity of concrete
ترجمه فارسی عنوان
شبیه سازی حرکت براون برای نفوذپذیری کلرید بتن
کلمات کلیدی
بتن، نفوذپذیری کلرید، شبیه سازی حرکت براون،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
The purpose of this paper is to present a Brownian motion simulation for the chloride diffusivity of concrete. According to stereological theory, the probability density function and cumulative distribution function for the circular aggregates in terms of the number of aggregates are derived. By coating each aggregate with an interfacial transition zone (ITZ) layer of equal thickness, concrete is then reduced to a two-phase composite material, composed of a bulk cement paste and equivalent aggregates. The equivalent ITZ thickness and the chloride diffusivity of each equivalent aggregate are formulated in an analytical manner. The Brownian motion simulation is used to compute the chloride diffusivity of concrete. Finally, the validity of the numerical simulation is verified with two sets of experimental results and the effects of the aggregate area fraction, the chloride diffusivity of ITZ, and the ITZ thickness on the chloride diffusivity of concrete are evaluated in a quantitative manner. The paper concludes that the numerical simulation can predict the chloride diffusivity of concrete with an average relative error smaller than 6% for the two selected verification examples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 122, 30 September 2016, Pages 478-487
نویسندگان
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