کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4913890 | 1428777 | 2016 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Residual stress-strain relationship for thermal insulation concrete with recycled aggregate after high temperature exposure
ترجمه فارسی عنوان
رابطه تنش-استرس باقی مانده برای بتن حرارتی با ترکیب بازیافت پس از قرار گرفتن در معرض دمای بالا
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کلمات کلیدی
بتن عایق حرارتی با ترکیبات بازیافتی، عملکرد مکانیکی، رابطه فشار تنش-فشاری، درجه حرارت بالا، مدول الاستیک
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
Containing recycled coarse aggregates and insulation aggregates, the thermal insulation concrete with recycled aggregates (RATIC) was developed to alleviate the environmental impact and improve the energy efficiency in buildings. This paper presents the experimental results of the residual mechanical performance and the complete compressive stress-strain relationship of RATIC after a high temperature exposure of 20-800 âC. In the experiments, three different concrete compositions were designed by substituting natural coarse aggregates with recycled coarse aggregates at the replacement ratios of 0%, 30% and 50%. The results show that the residual compressive strength of heated concrete decreases significantly when the temperature exceeds 400 °C and the elastic modulus deteriorates faster than the strength. However, both the residual strength and the elastic modulus of RATIC are apparently larger than those of the normal concrete. Higher RCA percentage results in higher relative ultimate strain but appears not having much influence on the failure modes, residual strength, elastic modulus, and peak strain of RATIC. Based on the experimental results, the equations for predicting the residual strength, peak strain, and ultimate strain, and elastic modulus of the RATIC after high temperature exposure are proposed along with the compressive stress-strain constitutive relationship.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 129, 30 December 2016, Pages 37-47
Journal: Construction and Building Materials - Volume 129, 30 December 2016, Pages 37-47
نویسندگان
Yuanzhen Liu, Wenjing Wang, Y. Frank Chen, Haifeng Ji,