کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6716606 | 1428744 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigating the effects of maximum aggregate size on self-compacting steel fiber reinforced concrete fracture parameters
ترجمه فارسی عنوان
بررسی اثرات حداکثر اندازه دانه بر پارامترهای شکستگی بتونی تقویت شده با فیبر فولاد خودکفا
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کلمات کلیدی
فایبر بتن، انرژی شکستگی، فیبر فولاد، بتن خود فشرده، اثر اندازه،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This research has studied the effects of maximum aggregate size of coarse aggregate and volume fraction of steel fibers on the parameters of self-compacting concrete fracture/brittleness. The laboratory program was implemented and the percent fiber and aggregate size were considered variable. Accordingly, 9 mix designs were prepared in 3 series based on 0.1, 0.3, and 0.5% steel fiber and three aggregate sizes (9.5, 12.5, and 19â¯mm) were considered in each fiber series. A total of 108 different-size notched beams were then prepared and fracture parameters were studied using Work Fracture Method (WFM) and Size Effect Method (SEM). Results have shown that in both methods, the largest aggregate size of 12.5â¯mm can be appropriate for self-compacting steel fiber-reinforced concrete(SCSFRC), although it is more significant in work fracture method. With the increase of aggregate size to 19â¯mm, GF and Lch decrease in work fracture method. However, in size effect method the concrete will be more ductile if Vf is increased, and it will be more brittle if dmax is increased. Comparing to the size effect method, the work fracture method performed better in energy absorption with the increase of both aggregate size and the steel fiber percentage. Size effect in such concrete with different fiber percentages was as anticipated and GF/Gf ratio was found 8.89.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 162, 20 February 2018, Pages 674-682
Journal: Construction and Building Materials - Volume 162, 20 February 2018, Pages 674-682
نویسندگان
Mohammad Ghasemi, Mohammad Reza Ghasemi, Seyed Roohollah Mousavi,