01089303

Component

The accurate prediction of fatigue cracking through transfer functions is critical to the implementation of mechanistic-empirical (M-E) flexible pavement design. These functions must be locally calibrated to account for differences in climate, materials, loading and other factors. Historically, fatigue transfer functions have been calibrated using either laboratory or full-scale field sections. Each approach has its own advantages and disadvantages. This study documents a methodology used at the National Center for Asphalt Technology (NCAT) Test Track to calibrate a fatigue transfer function using accelerated loading of test sections with embedded instrumentation. This paper details the methodology and its application to two sections that experienced fatigue cracking. While the results are limited to local conditions, the methodology can be more widely applied to other test facilities considering fatigue calibration under accelerated conditions.

01084478

08-1239

English

17p

2008

Transportation Research Board 87th Annual Meeting

DVD

Figures (7) ; References (23) ; Tables (2)

Cracking; Flexible pavements; Instrumentation; Mechanistic-empirical pavement design; Pavement design; Test tracks; Testing; Transfer functions

Accelerated loading facilities

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

Transportation Research Board Annual Meeting 2008 Paper #08-1239

TRIS, TRB

Jan 29 2008 3:35PM