01699727

Component

https://doi.org/10.1177/0361198119835540

Many highway agencies are transitioning from the 1993 AASHTO pavement design guide to the AASHTOWare Pavement ME Design (PMED). Pavement performance models embedded in the PMED software need to be calibrated for new and reconstructed hot-mix asphalt (HMA) pavements. Twenty-seven newly constructed HMA pavements were used to calibrate the prediction models—twenty-one for calibration and six for validation. Local calibration for permanent deformation, top-down fatigue cracking, and the International Roughness Index (IRI) models was done using the traditional split-sample method. Comparison with the results from the 1993 AASHTO design guide for ten new HMA pavement sections with varying traffic levels was done. The results show that the thicknesses obtained from locally calibrated PMED are within 1 inch of the AASHTO 1993 design guide prediction for low to medium-low traffic. For sections with high traffic level, the 1993 AASHTO design guide yielded higher thickness than PMED. The PMED implementation strategies adopted in Kansas and relevant concerns are discussed. Finally, an automated calibration technique has been proposed to help highway agencies to perform periodic in-house calibration of the performance models.

19-05765

English

pp 490-499

2019-4

Transportation Research Record: Journal of the Transportation Research Board

Digital/other

Figures (5) ; References (14) ; Tables (7)

Asphalt pavements; Calibration; Deformation; Design standards; Fatigue cracking; Flexible pavements; Hot mix asphalt; Mechanistic-empirical pavement design; Software

AASHTO Design Guide; AASHTOWare (Software); International Roughness Index

Kansas

Data and Information Technology; Design; Highways; Pavements

TRIS, TRB, ATRI

Feb 14 2019 10:39AM