Comparison of carbonation models

Title: Comparison of carbonation models
Author(s): I. Galan, C. Andrade
Paper category : conference
Book title: 3rd International PhD Workshop on Modelling the Durability of Reinforced Concrete
Editor(s): R. M. Ferreira, J. Gulikers, C. Andrade
Print-ISBN: 978-2-35158-095-0
e-ISBN: 978-2-35158-094-3
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 41 - 49
Total Pages: 9
Nb references: 9
Language: English

Abstract: In order to describe the CO2 diffusion process into the concrete, several carbonation models have been proposed, being the simplest one based on the square root of time.
Some authors, as Tuutti (1982), Bakker (1994) and Papadakis (1989), among others, have proposed models based on the CO2 diffusion coefficient, that is, on the solution to Fick’s second law.
Parrott (1994) proposed a model based on the air permeability coefficient.
Recently Castellote (2008) has also proposed a carbonation model based on the un-reacted core engineering model and also on the CO2 diffusion coefficient.
The aim of this work is to analyze and compare these carbonation models. The carbonation depth predicted by the models is also compared with the values experimentally measured in specimens exposed to natural carbonation in different environmental conditions. Finally, the main parameters in each model and their influence are discussed.

Online publication: 2010-02-22
Publication type : full_text
Public price (Euros): 0.00