کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6712062 1428724 2018 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new mixture design methodology based on the Packing Density Theory for high performance concrete in bridge engineering
ترجمه فارسی عنوان
روش جدید طراحی مخلوط بر اساس تست تراکم بسته بندی برای بتن با عملکرد بالا در مهندسی پل
کلمات کلیدی
روش طراحی مخلوط بتن، نظریه بسته شدن ذرات، طول عمر بتن با عملکرد بالا، مدل بسته بندی فشرده
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
In this study, a new mixture design methodology based on the 4-parameters compressible packing model (CPM) of Packing Density Theory was proposed to satisfy the specific performance criteria of high performance concrete for prestressed concrete bridge construction. Iterative algorithms were developed to determine the parameter of critical cavity size ratio x0 which reflect the crushed aggregate particles shape property and optimize the proportions of aggregates with different size range. After the optimization of aggregates, all the components in concrete were calculated. Thirty-one concrete mixtures with coarse aggregate from 5 different sources have been formulated according to this method to validate it both in fresh and hardened state. The workability, mechanical, and durability properties are verified during the slump, compressive strength, shrinkage, chloride-penetration resistance, and freeze-thaw resistance tests to characterize the obtained high-performance concrete. It is clear from the study that the proposed method is a successful theory for optimizing composition of high performance concrete.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 182, 10 September 2018, Pages 80-93
نویسندگان
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