Inhomogeneous Poisson Model for Peeling/Falling of Concrete

Convenient methods for predicting the peeling and of cover concrete falling off based on reinforcement corrosion amount require a lot of inspection data, and assume the correction based on several inspections because there are many uncertainties. In this study, the authors propose a methodology using inhomogeneous Poisson process for estimating the peeling and falling process based on a small amount of inspection data. In addition, the proposed model was applied to the data on the inspection of the railings of RC railway viaducts, which would undergo the composite deterioration due to neutralization and salt damage, and it was found that the proposed model enables the prediction that takes into account the increase in reinforcement corrosion rate and explains the process of peeling and falling more accurately than a homogeneous Poisson model.