01701838

Component

https://doi.org/10.1177/0361198119838988

Faulting is a major and commonplace distress in jointed concrete pavement (JCP) that can directly cause pavement roughness and adversely influence the ride quality of a vehicle. Faulting also plays an essential role in concrete pavement design. Notwithstanding the importance of faulting, the accuracy and reasonability of the faulting prediction models that have been developed to date remain controversial. Furthermore, the process of faulting over time is still not fully understood. This paper proposes a novel mechanistic-empirical model to estimate faulting depth at joints in the wheel path in JCP. Two stages within the process of faulting were revealed by the model and are introduced in this study. To distinguish the two stages of faulting, an inflection point, as a critical faulting depth, was directly determined by this model and suggested to be an indicator of the initiation of erosion for concrete pavement design. The proposed model was proven accurate and reliable by using long-term pavement performance data. The parameters in the model were statistically calibrated with performance-related factors by Akaike’s Information Criterion for variable selection and performing stepwise regression.

19-01490

English

pp 407-417

2019-5

Transportation Research Record: Journal of the Transportation Research Board

Digital/other

Figures (6) ; References (18) ; Tables (3)

Concrete pavements; Faulting; Mathematical models; Mathematical prediction; Mechanistic-empirical pavement design; Pavement joints; Pavement performance

Design; Highways; Pavements

TRIS, TRB, ATRI

Mar 4 2019 12:30PM