Mathematical modelling of concrete carbonation with moving boundary
Date
2020-10-01Author
Li, Long-yuan
Subject
Modelling Carbon-dioxide Diffusion Concrete carbonation Moving boundary
Metadata
Show full item recordAbstract
This paper presents the mathematical models describing the diffusion of carbon-dioxide in concrete with considering the effect of concrete carbonation. The effect of concrete carbonation on carbon-dioxide diffusion is modelled by using a sink term added in the diffusion equation. It is shown that, when the carbonation reaction is much faster than the diffusion process, the diffusion of carbon-dioxide in carbonated concrete can be treated as the diffusion problem with a moving boundary, representing the diffusion front or the carbonation depth. An analytical solution is also derived for the diffusion problem with moving boundary.
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Publisher
Elsevier BV
Journal
International Communication of Heat and Mass Transfer
Volume
117
Pagination
104809-104809
Number
104809
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