2021 Volume 77 Issue 2 Pages I_103-I_110
In order to manage a huge amount of road pavement with a limited budget and personnel, it is necessary to prevent early deterioration of the pavement and reduce LCC by extending the service life. When internal deterioration of the pavement occurs, if the road administrator makes cheap repairs without repairing from the deteriorated part, the road surface may deteriorate early and future repair costs may increase. In this study, we constructed a Markov deterioration model that can express early deterioration. We defined a complex state of road surface deterioration and internal deterioration, and proposed a transition probability matrix in which the probability of road surface deterioration changes due to internal deterioration. Furthermore, it was confirmed that the possibility of reducing the LCC can be quantitatively evaluated by performing numerical calculations using a fictitious deterioration model and performing repairs suitable for internal deterioration.
