Probabilistic assessment of asphalt pavement design

Authors

  • M. Rodríguez Universidad de Medellín (Colombia)
  • G. Thenoux Pontificia Universidad Católica de Chile
  • A. González Universidad del Desarrollo (Chile)

DOI:

https://doi.org/10.4067/S0718-50732016000200002

Keywords:

pavement design, asphalt pavements, probabilistic assessment

Abstract

In Chile, as in many South American countries, AASHTO-93 is the current official method for the design of asphalt pavements. The method gives an estimated number of 80 kN standard axle loads (W18) that the pavement can withstand for a certain serviceability. A safety factor is then applied to W18 to take into account the confidence level and the estimated variance of the inputs used in the method, whereby the magnitude of the structure’s life cycle is estimated. Normally, data used in the AASHTO-93 method are assumed to be deterministic, disregarding their random nature. This paper presents a probabilistic assessment of the AASHTO-93 pavement design method under Chilean conditions, which provides a set of probability density functions (PDFs) that allow a probabilistic estimation of the pavement life cycle in terms of the value W18. To achieve the goal, we developed a simulation model based on a sample of 13 groups of roads located throughout Chile.

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Author Biography

M. Rodríguez, Universidad de Medellín (Colombia)

Profesor Facultad de Ingeniería, Universidad de Medellín

 

 

Published

2016-08-30

How to Cite

Rodríguez, M., Thenoux, G., & González, A. (2016). Probabilistic assessment of asphalt pavement design. Revista Ingeniería De Construcción, 31(2), 83–90. https://doi.org/10.4067/S0718-50732016000200002

Issue

Section

Original Research

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