Compositions and methods relating to increased carbon dioxide uptake in mixing and curing of concrete

A method comprising:

• mixing a cementitious composition comprising:
• lime at 0.1 kg/m3 to 500 kg/m3 based on the dry weight of the cementitious composition;
• a cement binder at 0.1 kg/m3 to 500 kg/m3 based on a dry weight of the cementitious composition;
• optionally, a secondary cementitious material at 0.1 kg/m3 to 350 kg/m3 based on the dry weight of the cementitious composition;
• fine aggregates at 300 kg/m3 to 1500 kg/m3 based on the dry weight of the cementitious composition;
• coarse aggregates at 300 kg/m3 to 1200 kg/m3 based on the dry weight of the cementitious composition;
• water in a weight ratio to the cement binder, the secondary cementitious material, and the lime cumulatively of 0.2:1 to 0.8:1;
• and
• a foaming agent at 0.01 wt % to 1 wt % based on a weight of the water;
• and
• wherein the cementitious composition has a maximum dry weight of 2000 kg/m3;
• wherein the cementitious composition except a gas is mixed for at least 1 minute to 30 minutes, the gas comprising carbon dioxide;
• subsequently,
• injecting the gas into the cementitious composition and mixing at least 5 seconds to 5 minutes;
• subsequently,
• placing the cementitious composition having the gas therein in a desired location;
• and
• allowing the cementitious composition having the gas therein to cure to a concrete composition.