کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6711585 1428720 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic response of rubberized concrete columns with and without FRP confinement subjected to lateral impact
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Dynamic response of rubberized concrete columns with and without FRP confinement subjected to lateral impact
چکیده انگلیسی
This study experimentally investigates the impact response of rubberized concrete columns subjected to lateral impact. A pendulum impact testing apparatus was used to test the concrete columns with varied rubber contents including 0%, 15%, and 30%. Fine and coarse aggregates were replaced by crumb rubber with particle sizes of 2-5 mm and 5-7 mm, respectively. The experimental results have shown that the rubberized concrete columns significantly reduce the peak impact force (27%-40%) and thus mitigate the risk of injury and even death if rubberized concrete is used in roadside barriers. In addition, the rubberized concrete columns were more flexible than the normal concrete columns. They could deflect twice the reference columns before failure. Rubberized concrete significantly increased the impact energy absorption. The columns with 15% and 30% crumb rubber showed an increase in the impact energy absorption by 58% and 63% as compared to the reference columns. The rubberized concrete column confined with FRP outperformed the reference columns in terms of both the energy absorption and load carrying capacity. Therefore, rubberized concrete is a better alternative and recommended for the use in roadside barriers to achieve better impact energy absorption capacity and reduce the maximum impact force under vehicle collisions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 186, 20 October 2018, Pages 207-218
نویسندگان
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