Journal Published Online: 28 August 2018
Volume 47, Issue 3

Performance Evaluation of Whitetopping with Improved Design Practices in Texas

CODEN: JTEVAB

Abstract

The design method of whitetopping in Texas is a method suggested by the American Concrete Pavement Association (ACPA). However, one of the limitations on this particular design method is that an existing asphalt pavement condition is not considered for slab thickness. Recently, the Texas Department of Transportation developed an improved whitetopping design procedure considering mechanistic-empirical (ME) behavior. In the present study, performance of whitetopping projects constructed by the ACPA design method in Texas were investigated, and improved design details were suggested in order to minimize distresses, such as corner break and slab movement, in transition areas. To evaluate the structural performance of whitetopping, various tests, including the falling weight deflectometer, ground penetration radar, and investigation of concrete coring were conducted on US 90. According to the field survey and tests results, most of the distress was caused by insufficient slab support conditions related to asphalt concrete pavement materials and inadequate slab thickness design. In addition, early-age behavior of whitetopping constructed by the improved ME design method was evaluated and analyzed, and various gage installations, such as vibrating wire strain gage, electric resistance-type strain gages, porous nonstress cylinder, and impervious nonstress cylinder, are discussed.

Author Information

Zhou, Wujun
School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
Won, Moon
Department of Civil and Environmental Engineering, Texas Tech University, Lubbock, USA
Choi, Pangil
Department of Civil and Environmental Engineering, Texas Tech University, Lubbock, USA
Pages: 23
Price: $25.00
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Details
Stock #: JTE20170665
ISSN: 0090-3973
DOI: 10.1520/JTE20170665