کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
277502 1430231 2014 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructural modeling of asphalt concrete using a coupled moisture–mechanical constitutive relationship
ترجمه فارسی عنوان
مدل سازی میکرو سازه بتن آسفالت با استفاده از روابط سازنده مکانیکی رطوبت
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

The coupled effect of moisture diffusion and mechanical loading on the microstructure of asphalt concrete is studied. The traditional Continuum Damage Mechanics (CDM) framework is modified to model detrimental effects of moisture and mechanical loading. Adhesive/cohesive moisture-induced damage constitutive relationships are proposed to describe the time-dependent degradation of material properties due to moisture. X-ray two-dimensional (2D) computed tomography-imaging technique is used to construct finite element (FE) microstructural representation of a typical dense-graded asphalt concrete. After being calibrated against pull-off experiments, the proposed moisture-induced damage constitutive relationship, which is coupled to thermo-viscoelastic–viscoplastic–viscodamage mechanisms, is used to simulate the microstructure of asphalt concrete. Simulation results demonstrate that the generated 2D FE microstructural representation along with the coupled moisture–mechanical constitutive relationship can be effectively used to model the overall thermo-hygro-mechanical response of asphalt concrete.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 51, Issues 25–26, December 2014, Pages 4260–4279
نویسندگان
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