01590180

Component

For estimation of remaining life, mechanistic-empirical analysis approach traditionally neglects environmental influence on flexible pavement properties. This may lead to an unsatisfactory result. This paper proposes a method of time-sharing damage accumulation to consider the influence of moisture and frost on resilient modulus of subgrade and unbound materials, and the effect of temperature on modulus and Poisson ratio of asphalt mixture, in which the entire service life is divided into several stages and the total damage is obtained by accumulating damage in each stage within its traffic and environment conditions. Based on this method, a methodology considering environmental factors is proposed to predict the remaining life of in-service airfield flexible pavement, and its detailed steps are described followed by a case study to demonstrate the application of the methodology. The result indicates the methodology can give a relatively accurate result of remaining life of in-service flexible pavement, and improve overall evaluation’s accuracy of an airport's pavements.

This paper was sponsored by TRB committee AFD10 Standing Committee on Pavement Management Systems.

01584066

16-3685

English

16p

2016

Transportation Research Board 95th Annual Meeting

Digital/other

Figures; References; Tables

Airport runways; Asphalt mixtures; Environmental impacts; Flexible pavements; Modulus of resilience; Moisture damage; Poisson ratio; Service life; Subgrade (Pavements); Temperature

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

Transportation Research Board Annual Meeting 2016 Paper #16-3685

TRIS, TRB, ATRI

Jan 12 2016 5:36PM