A benchmark of carbonation models on concretes with and without mineral additions

Title: A benchmark of carbonation models on concretes with and without mineral additions
Author(s): E. Stora, B. Albert, R. Barbarulo
Paper category : conference
Book title: 2nd International Symposium on Service Life Design for Infrastructures
Editor(s): K. van Breugel, Guang Ye, Yong Yuan
Print-ISBN: 978-2-35158-096-7
e-ISBN: 978-2-35158-097-4
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 73 - 81
Total Pages: 9
Nb references: 17
Language: English

Abstract: Carbonation of concrete is a process by which carbon dioxide (CO2) in the ambient air penetrates the material and reacts with hydration products to form calcite (CaCO3). This phenomenon strongly favours corrosion of reinforced concrete, since the protection of embedded steel bars can be depassivated due to the induced drop of pH. Consequently, concrete should be resistant to carbonation in order to prevent corrosion that is recognized as the most important durability problem for reinforced concrete structures. However, these processes take many years to occur and carbonation experiments are generally performed in accelerated conditions. Therefore durability models are necessary for predicting the service life of cement-based materials. Many analytical or numerical models (e.g. [1-6]) have been proposed in literature for estimating the durability properties of cement-based materials. The present paper aims at comparing three different carbonation models [1-3] with well documented experimental results in order to test their reliability.

Online publication: 2011-04-20
Publication type : full_text
Public price (Euros): 0.00