01152353

Component

The development of deterioration models is an essential element for pavement management systems and the optimal design of facilities. This paper describes the development of crack initiation models for flexible pavements by combining experimental and field data. A European pavement database, the Performance Analysis for Road Infrastructure (PARIS) project database, which consists of both Real-Time Loading Testing (RLT) data and Accelerated Loading Testing (ALT) data, is used. Crack initiation models are developed first separately for the two datasets. Subsequently, joint estimation is performed on the two datasets simultaneously. Biases in the model parameters, caused by the endogeneity of construction variables and by data censoring, are corrected using appropriate econometric techniques. Joint estimation allows for the identification and quantification of the effect of variables that are missing from the field dataset. Moreover, it accounts and corrects for biases in the experimental dataset. The results of the study indicate that endogeneity bias correction leads to more reliable models and joint estimation to models with improved statistical properties and prediction accuracy.

01147878

10-1096

English

14p

2010

Transportation Research Board 89th Annual Meeting

DVD

Figures (2) ; References (19) ; Tables (7)

Cracking; Experiments; Field tests; Flexible pavements; Pavement distress; Pavement management systems; Real time control

Accelerated loading facilities; Crack initiation

Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Transportation Research Board Annual Meeting 2010 Paper #10-1096

TRIS, TRB

Jan 25 2010 10:29AM