01622450

Component

The concept of built-in curl is uniformly accepted in the research community as an important characteristic of the pavement structure. To this end, the AASHTO M-E procedure considers built-in curl as a parameter in its rigid design, and the procedure is very sensitive to this parameter. Prior research has used slab curvature to estimate the built-in curl parameter. The authors follow on this research in the development of analytical tools to infer slab profile directly from profilometer data. The developed tools represent an automated empirical mode decomposition (EMD) process contained within the Hilbert-Huang Transform (HHT). These tools were then applied to profilometer data from the Long-Term Pavement Performance (LTPP) database. It was found that slab profile could be recovered for LTPP projects; for these projects, the slab profiles could be correlated with built-in curl over the pavement life. The application of these tools presents a promising first step in the extension of profilometer data beyond performance measures (i.e., smoothness) and into areas that directly influence the mechanistic-empirical modelling of the pavement structure.

This paper was sponsored by TRB committee AFD90 Standing Committee on Pavement Surface Properties and Vehicle Interaction.

01618707

17-01360

English

17p

2017

Transportation Research Board 96th Annual Meeting

Digital/other

Figures; References; Tables

Mechanistic-empirical pavement design; Pavements

Empirical Mode Decomposition; Long-Term Pavement Performance Program

Built-in curling; Curling (Pavements); Profilometer data

Highways; Pavements

Transportation Research Board Annual Meeting 2017 Paper #17-01360

TRIS, TRB, ATRI

Dec 8 2016 10:26AM