کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5207697 | 1382363 | 2008 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Long-term prediction of compressive creep development in expanded polystyrene
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The results obtained in investigating the creep of expanded polystyrene (EPS) boards under compressive stress are presented. Power and exponential equations were used for describing creep compliance. It was found that the curves of creep compliance approximated by both equations adequately represent the research results, taking into account the scatter of the experimental data. Based on the calculation and empirical estimate of long-term creep of EPS under compressive stress Ïc=(0.25-0.45)Ï10%, its creep compliance I¯c(T=10) was determined for a period of 10 years in the future. The dependence of I¯c(T=10) on the density of polystyrene boards and the value of long-term compressive stress Ïc was established. The expected values of creep strain ε¯c(T=10) development in expanded polystyrene boards EPS 80-EPS 250 under constant compressive stress Ïc=(0.25-0.45)Ï10% are presented for the prediction period of 10 years. To obtain the expected creep values for any other period of time in the interval of 5⩽T⩽50 years, the values of ε¯c(T=10) should be multiplied by the empirical coefficient m¯I¯c(Ti)j.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 27, Issue 3, May 2008, Pages 378-391
Journal: Polymer Testing - Volume 27, Issue 3, May 2008, Pages 378-391
نویسندگان
I.Y. Gnip, S. Vaitkus, V. KerÅ¡ulis, S. VÄjelis,