Pavement and Geotechnical Service

Baton Rouge, LA, United States

Pavement and Geotechnical Service

Baton Rouge, LA, United States
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Chen X.,Pavement and Geotechnical Service | Lambert J.R.,Pavement and Geotechnical Service | Tsai C.,Pavement and Geotechnical Service | Zhang Z.,Louisiana Transportation Research Center
International Journal of Pavement Engineering | Year: 2013

Due to industrial plant expansion, superheavy load moves have increased drastically in Louisiana within the past decade. This paper presents a case study of a superheavy load movement with over 1.8-million kg loads on a flexible pavement. The study included pavement structural analysis under superheavy load and the estimation of cost attributable to the movement. The structural evaluation was performed by both three-dimensional (3D) finite element and the layered elastic analysis with the 3D Mohr-Coulomb yield criterion. Three wheel load configurations were analysed. The comparison of the two methods showed comparable results for the single-line load configuration. In addition, a simple and rational cost allocation process was proposed to estimate the cost attributable to a superheavy load move. The proposed process was based on the predicted damage caused by a superheavy load move and on the estimated cost for repairing the deteriorated pavement. © 2013 Taylor and Francis Group, LLC.


Chen X.,Pavement and Geotechnical Service | Zhang Z.,Louisiana Transportation Research Center | Lambert J.R.,Pavement and Geotechnical Service
International Journal of Pavement Engineering | Year: 2014

In this study, field performance of a stone interlayer pavement test section and cement-stabilised base test control section on LA-97 in Acadia Parish, Louisiana, was monitored during 20 years of service. In addition, the performance of other nine stone interlayer pavement sections in Louisiana constructed from 1999 to 2008 was monitored and evaluated. Field evaluations in this study included distress surveys on all 11 pavement sections, and non-destructive evaluation of pavement structure by the falling weight deflectometer and the dynamic deflection determination system test on nine of these sections. The field evaluation results indicated that the stone interlayer test section on LA-97 had a superior pavement performance to control section over the 20 years of service, and other nine stone interlayer pavement sections were in good pavement condition after 2.5-12 years of service. © 2013 © 2013 Taylor & Francis.

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