Systems and methods for storing and mineralizing carbon dioxide with lime

A binder composition for storing carbon dioxide, the composition comprising:

• 5-30% of lime by weight;
• at least 45% of a supplementary cementitious material (SCM) by weight;
• 1-20% of calcium carbonate by weight;
• and
• carbon dioxide.

A method of sequestering carbon dioxide, the method comprising:

• mixing lime with a first mixture comprising cement to form a second mixture, wherein the first mixture has an alkaline pH, and wherein the second mixture has a pH of at least 12.0 and soluble calcium cations;
• mixing a supplementary cementitious material (SCM) with the second mixture to form a third mixture, wherein the SCM comprises silicon, aluminum, and/or iron;
• and
• adding carbon dioxide to the third mixture to form a fourth mixture comprising—5-30% of lime by weight;
• at least 45% of a supplementary cementitious material (SCM) by weight;
• 1-20% of calcium carbonate by weight;
• and
• carbon dioxide.