کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6717883 | 503531 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental investigation of whole stress-strain curves of coral concrete
ترجمه فارسی عنوان
بررسی تجربی از کلیه منحنی های تنش و کرنش بتن مرجانی
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کلمات کلیدی
بتن مرجانی، روش بارگیری و تخلیه چرخه تنش برابر، روش بارگذاری یکنواختی تنش برابر، منحنی تنش و تنش کامل مدول الاستیک نسبت پواسون،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
The constitutive relationship of coral concrete (CPC) was researched using prismatic specimens under uniaxial compression. The equal stress cycle loading and unloading and equal strain monotonic loading methods were adopted. The elastic modulus (Ec) and Poisson's ratio (μ) were determined. The results showed that when the specimen strain was close to the maximum, CPC was rapidly damaged in the form of splitting. The whole stress-strain curve ascent stage was composed of concave and convex curves, while the descent stage was relatively short. The ratio of residual stress (Ïri) and peak stress (Ï0i) was 0.30-0.50, and with increase in the strength grade, Ïri/Ï0i decreased. The two-part constitutive equations of CPC were presented, which could reflect all the characteristics of the compression tests. With increase in the strength grade, the μ of coral concrete first increased and then decreased. The Ec of CPC tended to increase. To expand the application of CPC in island engineering construction, superfine cement paste, silicon mortar, or polymer could be used to strengthen the coral surface. Adding steel bar, steel fibre, or organic fibre into CPC could also increase the CPC strength and tenacity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 122, 30 September 2016, Pages 81-89
Journal: Construction and Building Materials - Volume 122, 30 September 2016, Pages 81-89
نویسندگان
Bo Da, Hongfa Yu, Haiyan Ma, Yongshan Tan, Renjie Mi, Xuemei Dou,