The specific condition of the actual project structure should be considered the specific condition of the actual project structure in the prediction of carbonation depth. The thought of dynamic information updates based on Bayesian approach was introduced in paper. A Bayesian prior model is proposed based on epistemic information from the empirical formula. Two types of the information, the epistemic information and the natural information from the practical structural inspection, are synthesized by Bayesian approach and inferred to update the prior model. The approach inherits the completeness of the prior model and the accuracy of inspection information. Carbonation law for the concrete structure is assessed and forecasted more accurately by the Bayesian approach. Case study illustrates the practicability and advantages of Bayesian dynamic information updates.
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