Sharp-interface models for concrete carbonation

J D Evans, Andrea Fernandez

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding


We investigate the fast-reaction asymptotics for a one-dimensional reaction-diffusion (RD) system describing the penetration of the carbonation reaction in concrete. The technique of matched-asymptotic expansions is used to show that the RD system leads to two distinct classes of limiting sharp-interface models. We explore three conceptually different diffusion regimes for the effective diffusivities of the driving chemical species. These result in one-phase and two-phase generalised Stefan moving-boundary problems with a nonstandard two-scale (micro-macro) moving-boundary problem – the main result of the paper
Original languageEnglish
Title of host publicationAIP Conference Proceedings
Subtitle of host publicationNumerical analysis and applied mathematics ICNAAM 2012: International Conference of Numerical Analysis and Applied Mathematics
PublisherAmerican Institute of Physics
Number of pages4
ISBN (Print)9780735410916
Publication statusPublished - 2012
EventInternational Conference of Numerical Analysis and Applied Mathematics, ICNAAM 2012 - Greece, Kos , Greece
Duration: 19 Sept 201225 Sept 2012


ConferenceInternational Conference of Numerical Analysis and Applied Mathematics, ICNAAM 2012


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