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Effect of slab curling and warping on pavement layer backcalculation

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Effect of slab curling and warping on pavement layer backcalculation

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    1. Effect of slab curling and warping on pavement layer backcalculation

    2. Acknowledgements

    3. Outline Introduction Background Curling and Warping in PCC Pavements Procedure of the Developed Approach ANN-Based Backcalculation Models Comparison with the MLR Analysis Application to the Actual Field Data Summary and Conclusions

    4. Introduction

    5. Introduction

    6. Concrete curling and warping of concrete slabs can influence the long-term performance and service life of the PCC pavements. The goal of the study is to develop a rapid methodology for backcalculating the Total Effective Linear Temperature Difference (TELTD) in jointed plain concrete pavements (JPCP) from the FWD deflection basins and the thickness of the concrete pavement layer. Background

    7. Previously developed ANN-Based Backcalculation Models: Concrete pavement layer modulus (EPCC) of the PCC layer, Coefficient of subgrade reaction (ks) of the pavement foundation, Tensile stresses at the bottom of the PCC layer (sPCC), Radius of Relative stiffness (RRS). Background

    8. Background

    9. Background

    10. Background

    11. Curling and Warping in PCC Pavements

    12. Curling and Warping in PCC Pavements

    13. Curling and Warping in PCC Pavements

    17. Curling and Warping in PCC Pavements

    18. Training Set Generation

    20. ANN-Based Backcalculation Models

    21. ANN-Based Backcalculation Models

    23. ANN-Based Backcalculation Models

    24. ANN-Based Backcalculation Models

    25. ANN-Based Backcalculation Models

    26. ANN-Based Backcalculation Models

    27. ANN-Based Backcalculation Models

    28. Noise-Introduced ANN-Based Backcalculation Models

    29. Comparison with MLR Analysis

    30. Comparison with MLR Analysis

    32. Field Data Analysis

    33. Field Data Analysis

    34. Field Data Analysis

    35. Field Data Analysis

    36. Summary and Conclusions

    37. Summary and Conclusions

    38. Summary and Conclusions

    39. Questions…

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