Article
Estimated Remaining Fatigue Life of Flexible Pavements Based on the Normalized Comprehensive Area Ratio Deflection Parameter
Canadian Journal of Civil Engineering
(2019)
Abstract
A lot of pavement deflection data are available that may be utilized as a tool to evaluate the structural capacity of pavement structures at network and project levels. Falling weight deflectometer (FWD) is one of the most widely utilized devices in pavement deflection testing. Under FWD testing, deflections generated at several lateral locations as a result of surface loading application are recorded. One of the major downsides of the static FWD testing is the traffic disturbance due to the required lane closures during testing. As an effort to reduce the amount of the required FWD testing on the network level, this study aims to run an advanced computer simulation analysis to mimic the FWD deflection bowl obtained from the field. The entire simulated FWD deflection bowl was utilized in the development of the new comprehensive pavement deflection bowl area parameters. The tensile strain at the bottom of the asphalt layer was successfully related to the developed normalized comprehensive area ratio parameter ( ) and to the number of load repetitions to fatigue failure. The newly developed parameter was evaluated utilizing data for 35 long term pavement performance sections in Texas. The newly developed can be easily implemented and utilized as a tool in any pavement management systems.
Keywords
- flexible pavement sections,
- central deflection,
- deflection bowl,
- tensile strain,
- fatigue
Disciplines
Publication Date
July 18, 2019
DOI
10.1139/CJCE-2019-0023
Citation Information
Karthikeyan Loganathan, Mayzan M. Isied, Ana Maria Coca, Mena I. Souliman, et al.. "Estimated Remaining Fatigue Life of Flexible Pavements Based on the Normalized Comprehensive Area Ratio Deflection Parameter" Canadian Journal of Civil Engineering (2019) p. 1 - 10 Available at: http://works.bepress.com/mena-souliman/16/