Systems and methods for self-sustaining reactive cementitious systems

A method for producing a cementitious mixture, the method comprising:

• obtaining a reactive aggregate comprising:
• an oven-dried bulk density between about 0.25 gm/cc and about 3.5 gm/cc;
• a porous structure;
• and at least 5% of a total mass of the reactive aggregate comprising particles that are less than 1 mm in size;
• obtaining a hydrating solution comprising water;
• obtaining an activating material comprising at least 40% calcium oxide by mass;
• obtaining a reactive filler that causes the cementitious mixture to cure as a concrete;
• and
• combining the reactive aggregate, the activating material, the reactive filler, and the hydrating solution together to form the cementitious mixture.

A cementitious mixture comprising:

• a reactive aggregate comprising at least one of an engineered cellular magmatic aggregate, a ceramic aggregate, a foam glass product aggregate, a brick or fired brick aggregate, and a synthetic pumice aggregate, having:
• an oven-dried bulk density between about 0.25 gm/cc and about 3.5 gm/cc,
• a porous structure having a connected porosity that accounts for between 5% and 50% of the reactive aggregate by volume, and
• at least 5% of a total mass of the reactive aggregate comprising particles that are less than 1 mm in size;
• and
• a hydrated activating material,
• wherein the reactive aggregate is present in the cementitious mixture at a ratio between the hydrated activating material and the reactive aggregate is between 0.01 and 10 inclusive, by mass.