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Title:

Structural Performance of an Instrumented Flexible Pavement

Accession Number:

01698443

Record Type:

Component

Abstract:

The Federal Aviation Administration (FAA) National Airport Pavement Test Facility (NAPTF) is a full-scale accelerated pavement testing facility located at the FAA William J. Hughes Technical Center in Atlantic City International Airport, New Jersey. Six flexible and three rigid test sections were built, instrumented and trafficked by Boeing 777 and 747 gears as part of construction cycle one. One flexible test section with an asphalt-stabilized base over a low-strength subgrade was considered in this study. All dynamic sensors, including pressure cells, strain gauges and multi-depth deflectometers were evaluated. A multistep procedure for evaluating the dynamic sensors was developed, and it included data reliability, repeatability, changes in the pavement responses of shallow and deep sensors under the Boeing 777 and 747 gears, and comparison with a three-dimensional (3D) finite element (FE) mechanistic model. The mechanistic model was found to predict the pavement responses with good reliability, whenever representative layer moduli are used. The layer moduli used in the 3D FE model were determined through backcalculation using a novel dynamic FE model that considers the subgrade damping. The study also found that 60% of the sensors produced acceptable or marginal responses and 40% produced unacceptable responses; therefore, it is recommended to consider this sensor survival rate when instrumenting future test sections. The rutting performance and pavement responses over time were evaluated; the test section was shown to have relatively similar performance and pavement responses under the Boeing 777 and 747 gears.

Supplemental Notes:

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

Report/Paper Numbers:

19-04468

Language:

English

Corporate Authors:

Transportation Research Board

Authors:

Bazi, Gabriel

ORCID 0000-0002-9295-5079

Mansour, Elise
Sebaaly, Peter E
Ji, Richard
Garg, Navneet

Pagination:

5p

Publication Date:

2019

Conference:

Transportation Research Board 98th Annual Meeting

Location: Washington DC, United States
Date: 2019-1-13 to 2019-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References

Subject Areas:

Aviation; Pavements

Source Data:

Transportation Research Board Annual Meeting 2019 Paper #19-04468

Files:

TRIS, TRB, ATRI

Created Date:

Dec 7 2018 9:30AM