Limiting Design Parameters for Accelerated Pavement Testing System
Publication: Journal of Transportation Engineering
Volume 118, Issue 6
Abstract
An accelerated testing system (ATS) has been designed with which simulated truck traffic can be applied to a pavement test section. Materials as well as environment and loading conditions can be controlled. A number of pavement materials, structures, and loading factors can be evaluated in the facility. Pavement damage due to load repetition and rutting in asphalt materials was used to define the limiting design parameters for the ATS. The goal was to compress the effects of 10 years of interstate‐type traffic into less than one year of operation of the ATS for both types of pavement damage. Traffic assumed was equivalent single‐axle loads. Load damage was evaluated using the American Association of State Highway Transportation Officials (AASHTO) load equivalency factors (LEF). Rutting damage was evaluated using the Shell rutting model. The ATS design incorporates a unique mechanical loading system that eliminates the deficiencies of other loading systems and simplifies the design and implementation. More importantly it substantially reduces the cost of the ATS.
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Copyright © 1992 ASCE.
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Published online: Nov 1, 1992
Published in print: Nov 1992
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