Using CO2 of 99% purity to simulate CO2 recovered from cement kiln flue gas, early-age CO2 curing of dry-mix, lightweight, and normalweight concrete mixtures was evaluated. Specimens prepared in the laboratory were evaluated for carbon uptake, strength gain, pH, and chemical analysis. Manufactured concrete pavers were evaluated for durability. The authors believe that early-age carbonation curing can provide permanent carbon storage and improve short-term and long-term performance of concrete