کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1454551 1509680 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prediction of ductility factor of corroded reinforced concrete beams exposed to long term aging in chloride environment
ترجمه فارسی عنوان
پیش بینی عامل انعطاف پذیری تیرهای بتونی خورنده که در معرض پیری بلند مدت در محیط کلر است
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی

An experimental study using a three-point bending test on RC beams with dimensions of 150 × 280 × 3000 mm, naturally corroded over many years was conducted to evaluate the influence of steel corrosion on structural performance and, in particular, to better understand the change in ultimate deflection in bending and then in ductility. Some previous works by different authors are also discussed. The results show that the conventional ductility factor hardly applies to the assessment of ductile behaviour of corroded beams. A new ductility factor, based on the ratio between ultimate deflection of corroded and non-corroded beams, is proposed. In addition, the relation between ductility factor of corroded beams and cross-section loss in the corroded reinforcing steels was studied on the RC beams tested. The service life of corroded structures appears to be limited by the reduction of ductility in bending behaviour, which is more pronounced on the reduction of load-bearing capacity. This was linked to the change in mechanical properties of corroded steel bars in comparison with non-corroded steel bars.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 53, October 2014, Pages 136–147
نویسندگان
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