fib models for modeling of chloride ion ingress and concrete carbonation: Levels of assessment of input parameters

Abstract

Reinforced concrete buildings and components have a limited service life due to degradation processes that impact structural
materials. These include chloride ion intrusion, concrete carbonation, and the corrosion of reinforcement. Finding out how a
building is doing now and making educated guesses about how it will perform in the future is the goal of structural condition
assessments. In order to evaluate buildings and their components over time, more sophisticated approaches and models of
predicting degradation are required. Models for simulating chloride ion intrusion into concrete and the carbonation process of
concrete that are part of the fib Model Code 2010 are the main topic of this study. Beginning with a basic quantification based on
code and literature guidelines, we go on to more complex levels of evaluation that include design documentation, visual
inspection data, extra on-site measurements, and/or laboratory testing