کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
776824 1464105 2012 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An experimental and numerical study on how steel and polypropylene fibers affect the impact resistance in fiber-reinforced concrete
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
An experimental and numerical study on how steel and polypropylene fibers affect the impact resistance in fiber-reinforced concrete
چکیده انگلیسی

In this paper, impact loading results from numerical simulations of plain concrete (PC) and fiber-reinforced concrete (FRC) are compared with experimental testing data, which were based on a testing procedure recommended by ACI committee 544. Concrete specimens were prepared with two water–cement ratios 0.36 and 0.46. Hooked-end steel fibers with an aspect ratio equal of 80 at 0.5% and 1% volume fractions and polypropylene fibers at 0.2%, 0.3% and 0.5% volume fractions were used. Both the numerical and experimental analysis results indicated that increasing the fiber volume fraction increased the impact resistance of the concrete specimens. The impact resistance increase was greater for normal-strength than that for high-strength concrete. The results also demonstrated that steel fibers are more effective at increasing impact resistance than polypropylene fibers.


► Adding fibers to concrete increases its compressive and tensile strengths.
► Fibers improve the concrete performance against the first crack initiation.
► Fibers improve the concrete performance against the final fracture.
► Steel fibers with hooked-ends have a better performance than polypropylene fibers.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Impact Engineering - Volume 46, August 2012, Pages 62–73
نویسندگان
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