Influence of Accelerated Carbonation on Physical Properties of Mortar Incorporating Expansive Additives

Key Points

• The aim is to explore how accelerated carbonation affects the physical properties of mortar incorporating expansive additives.
• Conducted experiments on mortar mixtures with expansive additives.
• Assessed the effects of accelerated carbonation on compressive strength.
• Evaluated the calcium carbonate content and potential CO2 diffusion in hardened structures.
• Mortar with expansive additives displayed higher compressive strength during the initial 2 days of curing.
• Accelerated carbonation increased calcium carbonate content in mixtures with expansive additives.
• A combination of expansive additives and γ-C2S resulted in greater expansion and higher calcium carbonate content compared to mixtures using expansive additives alone.