Abstract
<p style='text-indent:20px;'>The present work is devoted to modeling and simulation of the carbonation process in concrete. To this aim we introduce some free boundary problems which describe the evolution of calcium carbonate stones under the attack of <inline-formula><tex-math id="M1">\begin{document}$ {CO}_2 $\end{document}</tex-math></inline-formula> dispersed in the atmosphere, taking into account both the shrinkage of concrete and the influence of humidity on the carbonation process. Indeed, two different regimes are described according to the relative humidity in the environment. Finally, some numerical simulations here presented are in substantial accordance with experimental results taken from literature.</p>
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