کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5437061 1509728 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pull-out behaviour of straight and hooked-end steel fibres under elevated temperatures
ترجمه فارسی عنوان
رفتار بیرونی الیاف فولادی مستطیلی و قلابدار در دمای بالا
کلمات کلیدی
رفتار بی نظیر، ساز و کارهای باند، درجه حرارت بالا، الیاف آویزدار الیاف راست،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
This paper presents the results of an experimental investigation into the effect of elevated temperature on the steel fibre-matrix bond characteristics. A series of pull-out tests on straight and hooked-end fibres embedded in four different cementitious matrixes, namely normal strength concrete (NSC), medium strength concrete (MSC), high strength concrete (HSC) and ultra-high performance mortar (UHPM) were performed. Ninety days after casting, the specimens were heated to target temperatures of 100, 200, 300, 400, 500, 600, 700 and 800 °C, respectively. The initial and residual thermal and mechanical properties of the concrete were investigated. It was shown that while the variation in compressive strength and pull-out response for different temperatures is relatively small up to 400 °C, further increase in temperature results in a reduction in the pull-out strength, especially for the temperature > 600 °C. At 800 °C, the maximum pull-out load of the hooked-end fibres with NSC, MSC and HSC decreased by 54%, 64% and 56%, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 95, May 2017, Pages 132-140
نویسندگان
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