کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
258131 | 503612 | 2013 | 17 صفحه PDF | دانلود رایگان |
This paper presents a full-scale fully heterogeneous finite element (FE) pavement model developed from X-ray computed-tomography images of asphalt concrete (AC) samples. The model was first developed to simulate a laboratory shear test. Second, model parameters determined for the laboratory shear tests were used to develop FE models for full-scale pavement test sections. A virtual strain gauge was also included in the models for calibration. Calibrated models were used to evaluate the strain-displacement distributions for all test sections. Recommendations are also presented for future use of the model developed in this study to investigate important problems in the design of asphalt pavements.
► We develop a fully heterogeneous viscoelastic finite element model for full-scale accelerated pavement testing.
► We examine changes in the strain and displacement distributions for four test sections.
► Performance rankings from the fully heterogeneous FE models are similar to the in-situ performance rankings.
► High near-surface shear strains can be an important cause of near surface rutting failure on highways.
► Asphalt mix type is an important factor controlling critical strain locations within the depth of AC layers.
Journal: Construction and Building Materials - Volume 43, June 2013, Pages 14–30