کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4913446 1428769 2017 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Age-dependent properties of fiber-reinforced concrete for thin concrete overlays
ترجمه فارسی عنوان
خواص وابسته به سن بتن مسلح فیبر برای پوشش های بتنی ناز
کلمات کلیدی
بتن مسلح فیبری، وابستگی به سن، مدول پارگی، نسبت قدرت باقی مانده، انرژی شکستگی، طرح روکش
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This study aims to investigate the age-dependent changes in flexural and fracture properties of fiber-reinforced concrete (FRC) used in the design of thin overlay pavements. Total four different types of steel or polypropylene macro-fibers with different dimensions and different fiber volume contents (0%, 0.5%, and 1.0%) were selected and investigated. No significant changes in compressive strength, free drying shrinkage, coefficient of thermal expansion, and modulus of rupture versus age were identified. Steel FRCs were observed to have a constant or increased residual strength as a function of age while different types or contents of polypropylene FRCs showed varied trends in residual strength versus age. Fracture energy for all FRCs was observed to increase versus age. Residual strength ratio for all FRCs decreased as a function of age, but with only two replicates per age and FRC type, values were highly variable so no trends were statistically verified at this time. A standard test age is recommended due to the changing residual strength ratio parameter used in thin FRC overlay design.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 137, 15 April 2017, Pages 288-299
نویسندگان
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