Carbonation Reaction of Lime, Kinetics at Ambient Temperature

The hardening of lime (due to carbonation) added as a binder in mortars is responsible for the increase of strength of the mortar and for the changes in its porous system. This article reports on a study of the uptake of carbon dioxide due to the carbonation reaction of lime in ambient temperature of approximately 20 deg C. The study focused on the influence of the presence of water on the diffusion of carbon dioxide in a porous lime mortar, as well as the parameters influencing the reaction of lime with carbon dioxide. Thermal analysis (TA) was used to verify the degree of carbonation that reached up to 83%. The results show that reaction speed is not dependent upon the CO2 concentration within the limits tested. The controlling factor in the carbonation process may be the dissolution of lime at the water-adsorbed surface.

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  • English

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  • Accession Number: 01000526
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 1 2005 12:03PM