01475454

Component

In this study, predictions of strain gauge calibrated full-scale micromechanical (MM) finite element (FE) models were used to identify the effects of asphalt concrete anisotropy on predicted asphalt concrete pavement performance. The accuracy of layered elastic theory (LET) models that are used in pavement design today were also evaluated. The MM FE model was first developed to simulate a laboratory shear test. Second, model parameters determined for the laboratory shear tests were used to develop MM FE models for full-scale pavement test sections. A virtual strain gauge was also included in the MM FE models for calibration. LET models were also calibrated using the measured strain gauge responses. Predictions of calibrated MM FE and LET models were compared to determine the effects of the absence of anisotropy in LET models on predicted pavement responses. Recommendations were also made for future use of the MM FE models to improve the predictive capability of LET models.

This paper was sponsored by TRB committee AFD40 Full-Scale Accelerated Pavement Testing.

01470560

13-2166

English

22p

2013

Transportation Research Board 92nd Annual Meeting

Digital/other

Figures; Photos; References

Asphalt concrete pavements; Finite element method; Pavement design; Pavement performance; Strain gages; Temperature

Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Transportation Research Board Annual Meeting 2013 Paper #13-2166

TRIS, TRB, ATRI

Feb 5 2013 12:29PM