Application of Structural Deterioration Model for Pavement Maintenance Planning Based on Life Cycle Cost Analysis

Abstract

Abstract                                                                        

At present, budget planning for pavement overlay and road rehabilitation in Thailand is based on International Roughness Index (IRI) as a key indicator which represents road serviceability level. Other considered factors are pavement distresses, pavement age, and traffic volume. However, these factors only present the damage at pavement surface and not reflect strength or remaining service life of pavement structure. Therefore, the objective of this research is to propose analytical framework considering life-cycle cost to help select pavement treatment types between pavement overlay and rehabilitation based on data from structural deterioration model.