ACCELERATED CARBONATION CURING TECHNOLOGY FOR SUSTAINABLE GREEN CONCRETE PRODUCTION– A REVIEW
Natural carbonation process in cement based materials due to atmospheric carbon dioxide which is the principal green house gas is very slow with number of parameters controlling the whole process. In past studies, most of the carbonation studies in concrete focused on the corrosion induced mechanism and the prediction of service life. Nevertheless, recently researches are focusing on the positive side of carbon dioxide sequestration in a cost effective and safe manner. The application of accelerated carbonation curing technology for CO2 sequestration in concrete with possible structural and environmental benefits. In this review paper, the active and passive process of carbonation in concrete, the static and dynamic process of accelerated carbonation curing, its effects in reinforced and plain cement concrete are studied. The impacts of carbonation curing on the mechanical and durability properties of concrete and carbon uptake in cement based products with respect to other related parameters are also reviewed. The CO 2 sequestration potential in concrete products is also presented. The advantages of carbonation curing over steam curing and cost analysis are also discussed. The methodology of carbon uptake quantity and the possible future research scope in the area of carbonation curing are also presented.