کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6712265 | 1428722 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modelling and characterising the fatigue behaviour of asphaltic concrete mixtures
ترجمه فارسی عنوان
مدل سازی و مشخص کردن رفتار خستگی مخلوط بتن آسفالت
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کلمات کلیدی
بتن آسفالت، خستگی کششی غیر مستقیم، تعداد چرخه تا شکست، فشار اولیه، مدل رگرسیون غیر خطی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This paper investigates the fatigue behaviour of asphaltic concrete mixtures subjected to Indirect Tensile Fatigue Test (ITFT) under a stress-controlled mode. The conventional stress/strain based approach is used to determine the number of cycles to failure and initial strain value under specified repeated load levels. The fatigue test results indicate that the MS-2 mix (containing 60% and 40% of coarser and finer particles, respectively) prepared with the 40/50 penetration grade binder accumulates less initial strain, and has a relatively better resistance to fatigue than the other tested mixtures. Furthermore, this fatigue behaviour is modelled using a power, intrinsically linear, and non-linear functional specifications. Among these, a non-linear model formulation is found to be the best suited, expressing the number of cycles to fatigue failure as a function of the initial strain, the viscosity, the optimum bitumen content, and the resilient modulus. The fatigue model captures high variability in the data (R2â¯=â¯0.86) with a reasonable prediction error (of 15%) as compared to other models. The findings of this study can serve as the basis for selection of asphaltic concrete mixtures based upon the fatigue life criterion; the models proposed in this study can be used as a precursor to determining the fatigue behaviour without performing laborious laboratory testing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 184, 30 September 2018, Pages 723-732
Journal: Construction and Building Materials - Volume 184, 30 September 2018, Pages 723-732
نویسندگان
Muhammad Aniq Gul, Muhammad Irfan, Sarfraz Ahmed, Yasir Ali, Shahab Khanzada,