کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4912920 | 1428749 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal and mechanical properties of high-performance fiber-reinforced cementitious composites after exposure to high temperatures
ترجمه فارسی عنوان
خواص حرارتی و مکانیکی کامپوزیت های سیمان با مقاومت بالا با فیبر تقویت شده پس از قرار گرفتن در معرض دمای بالا
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This paper investigates residual thermal and mechanical properties of high-performance fiber-reinforced cementitious composites (HPFRCCs) proportioned with high-volume fly ash after exposure to 200, 400, 600, and 800 °C. The investigated thermal and mechanical properties include the thermal conductivity, specific heat, compressive strength, tensile strength, tensile ductility, and density. The effects of five mix proportioning variables on the material properties are evaluated, which include the water-to-binder ratio (0.24-0.36 by mass), sand-to-binder ratio (0.36-0.66 by mass), fly ash content (60%-75% by mass), polyvinyl alcohol fiber content (1.5%-2.2% by volume), and superplasticizer content (0.10%-0.15% by mass). Experimental results reveal significant dependence of the residual thermal and mechanical properties on temperature and the mix proportion, which can be attributed to a series of chemical and physical reactions that occur at elevated temperatures. This study can facilitate optimization of mix proportions of HPFRCCs for enhanced thermal and mechanical performance in fire or high temperature applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 157, 30 December 2017, Pages 829-838
Journal: Construction and Building Materials - Volume 157, 30 December 2017, Pages 829-838
نویسندگان
Xiuling Li, Yi Bao, Lele Wu, Qingxi Yan, Hongyan Ma, Genda Chen, Huining Zhang,