Enhanced Capabilities of the Illinois Accelerated Pavement Tester

Renshaw, Greg; Al-Qadi, Imad; Kohler, Erwin

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https://hdl.handle.net/2142/124055 Copy

Description

Title

Enhanced Capabilities of the Illinois Accelerated Pavement Tester

Author(s)

• Renshaw, Greg
• Al-Qadi, Imad
• Kohler, Erwin

Issue Date

2024-08

Keyword(s)

• Accelerated Pavement Testing
• Pavement
• Highway Pavements
• Airport Pavements
• Accelerated Loading

Abstract

After being in service for nearly 20 years, the Illinois Accelerated Pavement Tester (I-APT) was upgraded to provide enhanced capabilities for accelerated pavement testing. In addition to a new control system, the improvement included a newly designed load carriage, which allows for testing with a tandem half-axle, axle yaw, and shear loading (breaking and accelerating). The new I-APT design could be fitted with various tire configurations (e.g., single, dual, wide-base, and aircraft). In addition, a tandem axle can be used that has the ability to vary axle spacing between 37 and 68 in. and wander tracking up to 18 in. Loading at a yaw angle of up to 6 degrees will now be possible, simulating lateral force, along shear force simulating skidding on pavement, which requires torque variations. Other improvements include the following: i) replacing the original electrically activated winch with a hydraulic power system, which will minimize electrical noise interferences with sensor signals; ii) advanced computing system file management using LabView codes; and iii) a new control trailer to operate the device.

Publisher

Illinois Center for Transportation/Illinois Department of Transportation

Has Part

• https://doi.org/10.36501/0197-9191/24-020
• ISSN: 0197-9191

Series/Report Name or Number

FHWA-ICT-24-017

Type of Resource

text

Language

eng

Sponsor(s)/Grant Number(s)

IDOT-R27-ALS

Copyright and License Information

No restrictions. This document is available through the National Technical Information Service, Springfield, VA 22161.

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