01373267

Component

Among the different surface distresses dealing with bituminous mixes, raveling involving the dislodgement of aggregates from the surface induced by traffic actions is one of the most relevant and complex. Several laboratory tests have been proposed in order to evaluate raveling potential of bituminous mixes and to study mix improvements, but few of them can be applied for in-situ bituminous mixes and even rarer are the predictive models to estimate the evolution of this type of degradation. In this paper, following a new test for the evaluation of in-situ raveling potential that is based on several tire sweep cycles performed on pavement surface by means of steering maneuvers carried out with fixed heavy vehicles, an original methodology for the prediction of the evolution of raveling is proposed. According to the approach proposed within the HDM 4 framework, an initiation and progression model are defined. In particular, both the initiation and the progression model are calibrated by means of visual surveys and the parameter expressing in situ raveling susceptibility derived from the abovementioned tire sweep tests. This methods has been applied to a case study and the preliminary results obtained appears to be promising.

01362476

12-1096

English

18p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References; Tables

Asphalt pavements; Bituminous mixtures; Field tests; Pavement distress; Stripping (Pavements)

Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials

Transportation Research Board Annual Meeting 2012 Paper #12-1096

TRIS, TRB

Feb 8 2012 4:59PM