Estructura porosa y proceso de carbonatación en pastas mixtas de cal con diferente porcentaje de cemento

Investigation of the parameters influencing progress of concrete carbonation depth by using artificial neural networks

“…Additionally, concrete with higher CaO cement contents are observed to yield much higher carbonation depths even in the earlier ages. A similar remark has also been made by Arandigoyen et al (2006) (41) who studied carbonation of mortars with the addition of lime that yielded an increased total amount of CaO and hence, increased amount of CH in the mix. The observed increase in carbonation depth might be related to the increased availability of portlandite (CH) in concrete mixes manufactured with cement having high CaO contents, that can be available for carbonation Further experimental studies focusing on these mechanisms could be beneficial, since this observation might be potentially critical for understanding the critical threshold of CaO contents of cements that are to be considered in a certain concrete mix design, so that a certain tolerated carbonation depth is not exceeded.…”