کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6480793 1428772 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Uni-axial compressive stress-strain relation of recycled coarse aggregate concrete after freezing and thawing cycles
ترجمه فارسی عنوان
رابطه تنش-فشار فشاری متحرک بتن پس از انجماد و انجماد بتن
کلمات کلیدی
بتن های جمع آوری شده بازیافت شده، انجماد و انجماد، از دست دادن توده، مدول الاستیک پویا، استحکام فشاری، منحنی فشار استرس،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


- The complete compressive stress-strain curves of RAC after freezing and thawing cycles were measured in this study.
- Theoretic stress-strain curve of RAC after freezing and thawing cycles was presented.
- Parameters of descending branch in stress-strain curve of RAC were given after freezing and thawing cycles.

The mass loss, compressive strength, dynamic elastic modulus and stress-strain relationship of recycled coarse aggregate concrete under different cycles of freezing and thawing were investigated by comparison with normal concrete in the research reported in this paper. Forty-eight prism specimens with the size of 100 mm × 100 mm × 300 mm and ninety-six cubic specimens with the size of 100 mm × 100 mm × 100 mm were fabricated and tested. Test results show that, the mass loss of recycled coarse aggregate concrete decreased first then increased with the increase of freezing and thawing cycles; the relative cubic compressive strength and the relative dynamic elastic modulus of recycled aggregate coarse concrete decreased linearly with the increase of freezing and thawing cycles. The stress-strain curve of recycled aggregate concrete first ascended rapidly and then descended rapidly after exceeding the peak stress till to 1.5 times of the peak strain, finally turned into a slow decrease process. The ductility of recycled coarse aggregate concrete became worse with the increase of freezing and thawing cycles. Theoretic stress-strain curve of recycled coarse aggregate concrete after different cycles of freezing and thawing was presented and it was in good agreement with the experimental results from the other researcher.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 134, 1 March 2017, Pages 210-219
نویسندگان
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