Calibration of M-E PDG Rutting Model for Indian Conditions
Within the context of the mechanistic-empirical pavement design guide, the rut depth transfer function used consists of local calibration and material-specific coefficients. The material-specific coefficients ensure that the material-specific creep and recovery data can be used within the context of simulation for quantification of rutting. In this work, material-specific coefficients of the mix with VG30 binder were developed using repeated creep and recovery test conducted at three different temperatures and for two different confinement conditions. The axle load and traffic data from ten national highways across India were chosen, and simulations were carried out for these highways. The results from M-E PDG simulations were analyzed, and the design life in terms of rutting was estimated. In addition, the adequacy of the pavement sections provided based on Indian pavement design code for a target rut depth was investigated.
KeywordsRutting Mechanistic-empirical method Traffic Axle load Calibration Permanent deformation
The authors thank the Department of Science and Technology for funding this investigation. The grant number is DST/TSG/STS/2011/46. The authors thank M/s V. R. Techniche, Delhi, and L&T IDPL, Chennai, for sharing the axle load data.
The authors acknowledge the opportunity provided by the 4th Conference of the Transportation Research Group of India (4th CTRG) held at IIT Bombay, Mumbai, India, between December 17, 2017, and December 20, 2017, to present the work that forms the basis of this manuscript.
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