کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6714864 | 1428739 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bond behavior of steel-fiber-reinforced self-stressing and self-compacting concrete-filled steel tube columns for a period of 2.5â¯years
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The aim of this study is to explore the influence of concrete age on the bond behavior of steel-fiber-reinforced self-stressing and self-compacting concrete-filled steel tube (FSSCFST) columns. The push-out tests of 36 FSSCFST columns are conducted at ages corresponding to 28â¯d or 2.5â¯y. All specimens with an age of 2.5â¯y are tested under four cycles of repeated loading. The variables considered in the test are as follows: (a) concrete age (28â¯d and 2.5â¯y); (b) thickness of the steel tube (2.5â¯mm, 3.5â¯mm, and 4.25â¯mm); (c) steel-fiber volume percentage (0% and 1.2%). The experimental results indicate that an increase in the concrete age increases the bond strength and corresponding slip (Su) of FSSCFST columns. The addition of steel fibers improves the bond behavior at an early age and it generally loses its effect with increases in the concrete age. With increases in the loading cycle, the bond strength in the same direction exhibits a decreasing trend. However, steel fibers delay the degradation in bond strength.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 167, 10 April 2018, Pages 33-43
Journal: Construction and Building Materials - Volume 167, 10 April 2018, Pages 33-43
نویسندگان
Yiyan Lu, Zhenzhen Liu, Shan Li, Wenshui Tang,