کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
6714063 1428735 2018 9 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Establishment and verification of prediction models of creep instability points of asphalt mixtures at high temperatures
ترجمه فارسی عنوان
ایجاد و تایید مدل های پیش بینی نقاط بی ثباتی خزش در مخلوط آسفالت در دماهای بالا
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کلمات کلیدی
مخلوط آسفالت، نقطه ناپایداری خزش، مدل پیش بینی، آزمون خزش تریسیه پویا،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This study established and verified prediction models of the creep instability points of two densely graded asphalt mixtures at high temperatures. First, AC-13 and AC-20 asphalt mixtures were selected and prepared. Their compressive strength values under different confining pressures and shear strength parameters were obtained through triaxial compression tests at 60 °C. Second, multiple repeated pressure values, which were less than the compressive strength values under the same confining pressure, were applied in dynamic triaxial creep tests at 60 °C, and the rheological numbers (FN) corresponding to the creep instability points of the asphalt mixtures were obtained. Third, prediction models of the different asphalt mixtures were established by analyzing the change law of FN under different confining and cyclic loading pressures. Finally, the FN values of the different additive mixtures were forecasted using the models. The reliability of the prediction results was successfully verified by the test results. The predicted FN values of the two asphalt mixtures were consistent with the experimental results at 60 °C. The proposed prediction models and the model establishment method can be of great significance in investigating the properties of asphalt mixtures at high temperatures and asphalt pavement rutting.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 171, 20 May 2018, Pages 303-311
نویسندگان
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