کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7172103 | 1463762 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of the loading frequency on the compressive fatigue behavior of plain and fiber reinforced concrete
ترجمه فارسی عنوان
اثر فرکانس بارگیری در رفتار خستگی فشرده بتن سبک و فایبر
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کلمات کلیدی
خستگی، فشرده سازی، بتن مسلح فیبری، فرکانس بارگیری،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
This paper presents the recent experimental results aimed at disclosing the loading frequency effect on the fatigue behavior of a plain concrete and two types of fiber-reinforced concrete, using polypropylene and steel fibers. Compressive fatigue tests were conducted on 123 cubic specimens (100 mm in edge length). Four different loading frequencies, 4 Hz, 1 Hz, 1/4 Hz and 1/16 Hz, were employed. The maximum stress applied on the specimen was 85% of its compressive strength and the stress ratio was kept constant as 0.3. The results show that the loading frequency effect on the fatigue behavior of the plain concrete is pronounced. The fatigue life (the number of cycles to failure) at lower frequencies is less than that at higher frequencies. However, the fibers do improve the fatigue behavior significantly under low loading frequencies. Such trend can be attributed to the effectiveness of the fibers in bridging cracks, and thus inhibiting the crack extension under cyclic loads.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 70, January 2015, Pages 342-350
Journal: International Journal of Fatigue - Volume 70, January 2015, Pages 342-350
نویسندگان
Arthur Medeiros, Xiaoxin Zhang, Gonzalo Ruiz, Rena C. Yu, Marta de Souza Lima Velasco,